Improved prognosis following peritonectomy procedures and hyperthermic intraperitoneal chemotherapy for peritoneal carcinomatosis from appendiceal carcinoma.

AIMS: The prognosis of patients with peritoneal carcinomatosis from gastrointestinal malignancies is poor. The aim of this study was to analyse the results of multimodality treatment for peritoneal carcinomatosis of appendiceal carcinoma. PATIENTS AND METHODS: From 07/95 to 01/00, 17 patients (13 males, 4 female, median age 58 years) underwent peritonectomy procedures in combination with intraperitoneal hyperthermic chemotherapy. Surgical, pathological and survival data were analysed retrospectively. RESULTS: All patients had undergone previous surgical treatment and one patient had received chemotherapy. In all patients peritonectomy procedures, as described by Sugarbaker, were performed with the aim of achieving a macroscopically complete cytoreduction (range 2-6, median 4 procedures per patient). Following resection, open hyperthermic intraperitoneal chemotherapy with cisplatin was performed. Eleven patients had postoperative complications (predominantly "non-surgical") and two patients died postoperatively. The 4-year survival rate was 75%. Complete cytoreducion had a statistically significant positive influence on long-term survival. CONCLUSIONS: In selected patients (WHO status 0/1, minimal residual disease, no distant metastases, complete cytoreduction), the prognosis for patients with peritoneal carcinomatosis of appendiceal origin can be improved by peritonectomy procedures and hyperthermic intraperitoneal chemotherapy. Postoperative morbidity may be increased due to "non-surgical" complications. Copyright Harcourt Publishers Limited.     

Neoadjuvant treatment of gastric cancer with peritoneal dissemination.

AIMS: To report our experience of neoadjuvant intraperitoneal and systemic chemotherapy (NIPS) for patients having a complete resection of the primary gastric cancer and peritoneal carcinomatosis (PC). PATIENTS AND METHODS: Patients with advanced peritoneal dissemination of primary gastric cancer had the placement of a peritoneal port system. For intraperitoneal chemotherapy, 40 mg of docetaxel and 150 mg of carboplatin were introduced in 1000 ml of saline on a weekly basis. Simultaneously, 100 mg/m2 of methotrexate and 600 mg/m2 of 5-fluorouracil were infused via a peripheral vein. A minimum of two cycles and up to six cycles of NIPS were used prior to cancer resection. At surgery a complete removal of the primary gastric cancer and the peritoneal implants by peritonectomy was attempted. RESULTS: Sixty-one patients were enrolled in the study. Thirty-nine had positive intraperitoneal cytology which reverted to negative cytology after treatment in 22. Thirty-eight showed a partial response. Thirty patients came to resection and 14 patients could be made disease-free. Median survival time of all patients was 14.4 months. Patients who received a complete resection had a median survival time of 20.4 months. Grade III/IV toxicities were not found after two courses of NIPS, but did develop in seven patients after more than three courses of NIPS. CONCLUSION: NIPS can downstage large volume peritoneal dissemination of gastric cancer. When combined with gastrectomy including peritonectomy a complete surgical resection was possible in one-quarter of the patients and resulted in a prolonged survival. This combined intraperitoneal and systemic chemotherapy for PC from gastric cancer is worthy of consideration for phase III clinical investigations.     

Successful management of microscopic residual disease in large bowel cancer

Although cancer surgery has been of great benefit to patients with large bowel cancer, a flaw that has caused the death of countless patients has gone unrecognized. Although surgeons have dealt successfully with the primary tumor, they have neglected to treat microscopic residual disease. Persistent cancer cells within the abdomen and pelvis are responsible for the death of 30-50% of the patients who die with this disease and for quality of life consequences that result from intestinal obstruction caused by cancer recurrence at the resected site and on peritoneal surfaces. New surgical techniques for large bowel cancer resection minimize the surgery-induced microscopic residual disease that may result from surgical trauma. New developments in exposure, hemostasis, adequate lymphadenectomy, and qualitatively superior margins of excision have occurred. Clinical data show that a 40% improvement in survival with an optimization of surgical technique is possible. Not only should the surgical event for primary colon and rectal cancer be optimized, but also the successful treatment of peritoneal carcinomatosis should be pursued. Resected site disease and peritoneal carcinomatosis can be prevented through the use of perioperative intraperitoneal chemotherapy in patients at high risk of persistent microscopic residual disease. These are patients with perforated cancer, positive peritoneal cytology, ovarian involvement, tumor spill during surgery, and adjacent organ involvement. Patients with established peritoneal carcinomatosis can be salvaged with an approximate 50% long-term survival rate if the timely use of peritonectomy procedures, intraperitoneal chemotherapy, and knowledgeable patient selection are utilized. Peritonectomy procedures allow the removal of all visible peritoneal carcinomatosis with acceptable surgical morbidity (25%) and mortality (1.5%) rates. Heated intraoperative intraperitoneal chemotherapy using mitomycin C, in addition to early postoperative intraperitoneal 5-fluorouracil, can eradicate microscopic residual disease in the majority of patients. The peritoneal cancer index, which quantitates colon cancer peritoneal carcinomatosis by distribution and by lesion size, must be used in the selection of patients who may benefit from these advanced oncologic surgical treatment strategies. The completeness of the cytoreduction score is the most powerful prognostic indicator in this group of patients. The surgeon must be aware that there are no long-term survivors unless complete cytoreduction occurs. With a combination of proper techniques for the resection of primary disease, peritonectomy procedures for the removal of all visible peritoneal implants, intraoperative and early postoperative chemotherapy for the eradication of microscopic residual disease, and quantitative tools for proper patient selection, one can optimize the surgical treatment of patients with large bowel cancer.     

Total abdominal colectomy,pelvic peritonectomy,and end-ileostomy for the surgical palliation of mucinous peritoneal carcinomatosis from non-gynecologic cancer

BACKGROUND AND OBJECTIVES: The optimal management of symptomatic advanced peritoneal carcinomatosis of non-gynecologic origin is not defined. Historic controls of surgical efforts report high postoperative mortality and morbidity rates with equivocal palliation. Novel surgical procedures need to be tested in terms of the impact on survival and quality of life. STUDY DESIGN: We studied 46 consecutive patients who underwent total abdominal colectomy, pelvic peritonectomy with construction of an end-ileostomy for palliation of peritoneal carcinomatosis. RESULTS: Total abdominal colectomy, pelvic peritonectomy, and end-ileostomy was successfully performed in 46 patients of median age of 54.4 years. Overall median survival was 10.7 months, with a mean follow-up period of 12 months. Patients with appendiceal malignancy had a median survival of 19.7 months. Prognosis was poorer for patients with colon cancer, who had a median survival of 7.0 months, while patients with primary peritoneal carcinomatosis had a median of 7.8 months. Postoperative morbidity and mortality rates were 19.5 and 8.6%, respectively. CONCLUSIONS: Total abdominal colectomy, pelvic peritonectomy, and end-ileostomy is a technically feasible procedure and is advocated for the palliation of patients with peritoneal carcinomatosis of appendiceal origin. It is not clear if the procedure should be advocated for more invasive gastrointestinal malignancies.     

Multidisciplinary therapy for peritoneal dissemination using peritonectomy

An aggressive approach to peritoneal dissemination involves peritonectomy procedures combined with preoperative intraperitoneal chemotherapy, intraoperative chemo-hyperthermia, and postoperative systemic chemotherapy. We have been performing multimodal therapy consisting of peritonectomy plus perioperative chemotherapy for the treatment of patients with peritoneal dissemination. Fifty-seven patients with established peritoneal dissemination from gastric cancer (n = 32), colon cancer (n = 17), ovarian cancer (n = 7), and mesothelioma (n = 1) have been treated with peritonectomy and intraoperative chemo-hyperthermia. Five-year survival rates of patients with gastric and colon cancer were 18% and 38%, respectively. Among various clinical factors, complete tumor resection was the most significant prognostic factor, and the prognosis of patients who underwent complete cytoreduction was significantly better than those who received incomplete cytoreduction. A multimodal therapy consisting of perioperative chemotherapy and peritonectomy with complete cytoreduction may be the most powerful method to treat patients with established peritoneal dissemination.     

HIPEC plus EPIC paclitaxel for maximal perioperative treatments of advanced epithelial ovarian cancer. Long-term results of a pilot study

BackgroundA unique time in which to effectively treat an intraabdominal malignancy is the time at which the surgeon attempts complete removal of the malignant process. Although surgery is effective for visible disease, micrometastases or multiple small cancer nodules are not amenable to resection. Alternative interventions to deal with residual disease disseminated on peritoneal surfaces are needed.Materials and methodsCytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC) can be combined with early postoperative intraperitoneal chemotherapy (EPIC) in order to maximally treat gross disease within the abdomen and pelvis and also the minimal residual disease that exists in many patients after resection. The third component of this treatment for ovarian malignancy was EPIC paclitaxel in this study. The clinical features, pharmacologic assessments, and survival were determined in ovarian cancer patients in whom EPIC was added to the perioperative treatment plan.ResultsPatients with high grade serous ovarian cancer underwent CRS, HIPEC with cisplatin/doxorubicin, and EPIC paclitaxel. These treatments combined as a single intervention were studied in 10 patients. The median number of peritonectomy procedures was 1, the median number of visceral resections was 5, and the median time required in the operating room was 8 h. Two patients had a class 3 adverse event. The median survival of patients was 50 months. Pharmacokinetic analysis of the intraperitoneal paclitaxel showed 252 ± 153 times exposure of peritoneal surfaces as compared to intravenous exposure when the drug was instilled into the peritoneal space.ConclusionsEPIC paclitaxel was successfully combined with CRS and HIPEC in 10 patients with ovarian cancer. The treatment was tolerated approximately the same as other major cytoreductive surgical procedures for ovarian cancer or other malignancies. Survival of these ovarian cancer patients seemed unusually prolonged as compared to other patients with stage 3b or recurrent disease. In this pilot study CRS, HIPEC and EPIC were safe and effective.     

Extent of parietal peritonectomy does not change intraperitoneal chemotherapy pharmacokinetics

PURPOSE: To measure the clearance intraperitoneal mitomycin C and doxorubicin in patients having peritonectomy and analyze the impact of the extent of peritoneal resection on pharmacokinetics. METHODS: A group of 15 patients with peritoneal carcinomatosis were submitted to cytoreductive surgery and heated intraperitoneal chemotherapy. Ten patients received mitomycin C and five, doxorubicin. Six patients underwent total parietal peritonectomy and nine had less-extensive peritonectomy. Pharmacokinetics were determined by sampling peritoneal fluid and blood. Drug concentrations over time, area under the curve ratios and the amount of drug recovered from the peritoneal cavity were calculated and compared between the groups. RESULTS: The concentrations of mitomycin C over time in the peritoneal fluid and plasma were similar in five patients with total parietal peritonectomy as compared to five patients with less-extensive peritonectomy ( P=0.5350 and 0.6991; Mann-Whitney test). Mitomycin C area under the curve ratio in total peritonectomy patients was 20.5 and 25.7 in patients with less-extensive peritonectomy. The difference in total amount of drug recovered from the peritoneal cavity was not significant (30.6+/-6.188% versus 22.6+/-3.84%, P=0.095). In the studies with doxorubicin, one patient underwent total parietal peritonectomy with similar pharmacokinetics to four patients submitted to partial peritonectomy. CONCLUSIONS: The extent of parietal peritoneal resection did not affect the pharmacokinetics of intraoperative intraperitoneal chemotherapy. The pharmacological barrier between the abdominopelvic cavity and plasma is not directly related to an intact peritoneum.     

Significance of peritonectomy for peritonitis carcinomatosis

We analyzed patients who underwent multimodal treatment with peritonectomy as an aggressive treatment for peritonitis carcinomatosis. Peritonectomy was treated in eighteen cases (eleven gastric cancer, seven colon cancer). Out of these eighteen cases, nine were initial operation, six were recurrence after first operation and three were for relief after palliative operation for peritoneal dissemination. Five cases of recurrence included ileus. Of all eighteen patients, ten had received preoperative chemotherapies. Peritonectomy made complete resection possible principle, and the procedure included resection of the primary lesion, subtotal colectomy and peritonectomy. An intestinal stoma was needed in nine cases, consequently. All patients cases underwent continuous hyperthermic peritoneal perfusion (CHPP). Early postoperative peritoneal chemotherapy was given in five cases. By peritonectomy for a first time operation, macroscopically complete resection was possible in six cases. In relief and recurrence cases few tumor cells remained in five cases. Ileus due to peritoneal carcinomatosia was eliminated in all cases, and caloric intake became possible. Fourteen cases had postoperative complication (morbidity 78%), and treatment-related death occurred in three cases (mortality 17%). It became possible to resect even the peritoneal dissemination that was inoperable by conventional surgery, and improvement of QOL was achieved by peritonectomy in cases of carcinomatous peritonitis. However, postoperative care is important since aggression becomes more intense.     

The integrated treatment of peritoneal carcinomatosis. A preliminary experience.

Some low-grade malignant tumors arising in the abdomen, lack of infiltrative attitude and "redistribute" on the peritoneum with no extraregional spreading. In this cases the complete tumor cytoreduction followed by intra- or postoperative regional chemotherapy has curative intent. Peritonectomy is the complete removal of all the parietal peritoneum and the visceral peritoneum involved by disease. After peritonectomy hyperthermic antiblastic perfusion is carried out throughout the abdomino-pelvic cavity for 60 minutes, at a temperature of 41.5 degrees C, with mitomycin C (3.3 mg/m2/Lt of perfusate) and cisplatin (25 mg/m2/Lt) (appendicular or colorectal primary), or cisplatin alone is (ovarian primary). Alternatively the immediate postoperative regional chemotherapy is performed with 5-fluorouracil (13.5 mg/Kg) and Lederfolin (125 mg/m2) (colic or appendicular tumor) or cisplatin (25 ng/m2) (ovarian tumor), each day for 5 days. Twenty patients affected by extensive peritoneal carcinomatosis (12 ovarian, 5 colonic, 1 appendicular, 1 mesothelial and 1 gastric primary) were submitted to peritonectomy with no residual macroscopic disease in all cases except three. Six patients were treated with intraoperative intra-abdominal hyperthermic antiblastic perfusion, while immediate postoperative intra-abdominal chemotherapy was given in 4 patients and systemic chemotherapy in other 5. Hospital mortality was 20%. At a mean follow-up of 11 months 14 patients are alive, 11 without disease and the median overall survival is 10.2 months. The curative potential of the combined therapeutic approach seems high in patients with peritoneal carcinomatosis from ovarian or colorectal primary not responding to systemic chemotherapy. Selection criteria of patients can strictly affect the surgical risk and the treatment has to be reserved for controlled clinical trials.     

Perioperative fast track program in intraoperative hyperthermic intraperitoneal chemotherapy (HIPEC) after cytoreductive surgery in advanced ovarian cancer

Introduction

Diffuse peritoneal dissemination in advanced ovarian cancer can be treated using optimal effort surgery involving peritonectomy procedures and the administration of hyperthermic intraoperative intraperitoneal chemotherapy (HIPEC).

Objective

To report on our experience in the treatment of advanced ovarian cancer using peritonectomy procedures and HIPEC through the fast track program.

Patients and method

From September 2008 until May 2010, forty-six patients with primary advanced (stage III-C) or recurrent ovarian cancer have been included in the fast track protocol if they had optimal cytoreduction CC-0 or CC-1 accompanied by HIPEC and there had no more than one digestive anastomosis.

Results

The mean peritoneal cancer index (PCI) was 12.35 (3-21). The median operation time was 380 min (200-540). Optimal surgery CC-0 was achieved in 38 of the 46 patients and CC-1 in the remaining 8. Mean postoperative hospital stay was 6.94 ± 1.56 days (3-11). Major morbidity rates were 15.3%. Paralytic ileus was the most frequent of these. There was no mortality related to the procedure.

Conclusion

Surgery with peritonectomy procedures and HIPEC in advanced ovarian carcinoma is possible under fast track surgery programs in patients with low volume peritoneal carcinomatosis. Prospective and randomized studies are needed.     

Treatment results of peritonectomy combined with perioperative chemotherapy for colorectal cancer-patients with peritoneal carcinomatosis

Operation results of 81 colorecatal cancer-patients with peritoneal carcinomatosis (PC) treated with peritonectomy plus perioperative chemotherapy are reported. The patients who had the following evidences are considered to be eligible for peritonectomy: 1) No evidence of N3 lymph node involvement, 2) No evidence of hematogenous metastasis, 3) No progressive disease after preoperative chemotherapy, 4) No severe co-morbidities or no poor general condition. Complete cytoreduction resection is aimed for removing all macroscopic tumors by peritonectomy using electrosurgical techniques. The completeness of cytoreduction (CC scores) after peritonectomy is classified into the following 4 criteria: CC-0-no peritoneal seeding was exposed during the complete exploration, CC-1-residual tumor nodules are less than 2.5 mm in diameter, CC-2-nodules are between 2 .5 mm and 25 mm in diameter, CC-3-nodules are greater than 25 mm in diameter, CC-2 and CC-3 are regarded as incomplete cytoreduction. Operation time and blood loss were 237 ± 124 min. (799-90 min) and 1,598 ± 1,411 mL (6,500-20 mL), respectively. Postoperative complications developed in 37( 46%) patients. The patients received CC-0/ -1 resection survived significantly longer than those of CC-2/ -3 group. The patients with PCI ≤ 10 survived significantly longer than those with PCI≥ 11. CC and PCI scores are the independent prognostic factors. The relative risk for death of CC-2/-3 group was 4.6-fold higher than that of CC-0/ -1 group. Accordingly, peritonectomy is indicated for patients with PCI score≤ 10.     

Radical surgery-peritonectomy and intraoperative intraperitoneal chemotherapy for the treatment of peritoneal carcinomatosis in recurrent or primary ovarian cancer

BACKGROUND AND OBJECTIVES: Advanced ovarian cancer typically spreads in a diffuse intra-abdominal fashion. This characteristic suggests that combined radical surgery and intraperitoneal chemotherapy may be a useful treatment procedure. The purpose of this study was to review patients submitted to surgical debulking and hyperthermic intraoperative intraperitoneal chemotherapy (HIIC) and to evaluate the potential prognostic survival factors for advanced epithelial ovarian cancer in our center. METHODS: A series of patients (N = 33) diagnosed of peritoneal carcinomatosis for epithelial ovarian cancer (stage III) from January 1997 to December 2004 submitted to radical surgery-peritonectomy and HIIC with paclitaxel was included in this study; 19 primary ovarian cancer and 14 recurrent ovarian cancer. RESULTS: Cytoreduction R0 (P = 0.018) and negative lymph nodes (P = 0.005) were covariables for major prognostic survival. Patients with optimal cytoreduction R0 obtained survival rates of 63% at 5 years in recurrent ovarian cancer and 60% in primary ovarian cancer, 71% and 63%, respectively with associated subtotal infra-abdominal peritonectomy, and even better results if negative lymph nodes. CONCLUSIONS: Radical surgery-peritonectomy with HIIQ has been shown to be a surgical procedure with high tolerability, low morbimortality, enhanced survival, and prolonged disease-free interval in patients with peritoneal carcinomatosis so much for recurrent or primary ovarian cancer.     

Treatment of peritoneal carcinomatosis from colorectal cancer by cytoreductive surgery and hyperthermic perioperative intraperitoneal chemotherapy.

PURPOSE: Peritoneal carcinomatosis from colorectal cancer is resistant to standard treatments and median survival time for patients ranges between 6 and 8 months. Aggressive cytoreductive surgery with hyperthermic intraperitoneal perioperative chemotherapy may increase median survival. METHOD: Patients undergoing cytoreductive surgery and perioperative hyperthermic chemotherapy (mitomycin C, intraoperatively; 5-fluorouracil early post-operatively) for peritoneal carcinomatosis from colorectal cancer from 1996 to 2003 were evaluated retrospectively. RESULTS: From 1996 to 2003, 18 cytoreductive procedures were performed. The post-operative morbidity rate was 44.4% with no treatment related mortality. The median total operation time was 5 h 28 min (range: 3 h 20 min to 7 h 10 min). The median follow-up was 21 months. The median survival was 15 months. CONCLUSION: Surgical debulking and perioperative intraperitoneal chemotherapy improved survival with acceptable morbidity and mortality. Completeness of the resection was the most important prognostic indicator.     

Peritonectomy and hyperthermic antiblastic perfusion in the treatment of peritoneal carcinomatosis.

AIMS: Some low-grade malignant tumours arising in the abdomen tend to remain loco-regionally confined to peritoneal surfaces, without systemic dissemination. In these cases complete surgical tumour cytoreduction followed by intra- or post-operative regional chemotherapy has curative potential. The aim of this study was to evaluate the outcome for patients treated in this way. METHODS: Peritonectomy was performed, involving the complete removal of all the visceral and parietal peritoneum involved by disease. After peritonectomy, hyperthermic antiblastic perfusion was carried out throughout the abdominopelvic cavity for 90 min, at a temperature of 41.5-42.5 degrees C, with mitomycin C (3.3 mg/m2/l) and cisplatin (25 mg/m2/l) (for appendicular or colorectal primaries), or cisplatin alone (for ovarian primaries). Alternatively, the immediate post-operative regional chemotherapy was performed with 5-fluorouracil (13.5 mg/kg) and Lederfolin (125 mg/m2) (for colonic or appendicular tumours) or cisplatin (25 mg/m2) (for ovarian tumours), each day for 5 days. RESULTS: Thirty-five patients affected by extensive peritoneal carcinomatosis were submitted to peritonectomy, with no residual macroscopic disease in all cases except three. Twenty-six patients were able to undergo the combined treatment involving loco-regional chemotherapy. Complications were observed in 54% of the patients and led to death in four of them. At a mean follow-up of 17 months overall 2-year survival was 55.2%, with a median survival of 26 months. CONCLUSIONS: After a learning curve of 18 months the feasibility of the integrated treatment increased to more than 90%, while mortality decreased dramatically. The curative potential of the combined therapeutic approach seems high in selected patients with peritoneal carcinomatosis not responding to systemic chemotherapy. Careful selection of patients can minimize the surgical risk, but the treatment should currently be reserved for clinical trials.     

晚期上皮性卵巢癌腹膜播散模式及腹膜切除范围

根据晚期上皮性卵巢癌（epithelial ovarian cancer,EOC）患者腹膜播散模式和腹膜切除范围的最新研究进展,分析评估肿瘤细胞减灭术（cytoreductive surgery,CRS）中行全壁腹膜切除术（total parietal peritonectomy,TPP）和内脏腹膜广泛切除术的前瞻性研究初步结果。在手术期间看似“正常”的腹膜中,隐匿性疾病的发生率较高,这可能是疾病复发的来源。腹腔热灌注化疗（hyperthermic intraperitoneal chemotherapy,HIPEC）主要作用于微小病灶和手术过程中脱落到腹腔内的游离癌细胞,从而降低复发风险;与单纯CRS相比,HIPEC联合CRS在无进展生存率和总生存率上均显示出优势。彻底根除这种隐匿性疾病的唯一方法为腹膜切除,TPP与内脏腹膜广泛切除术可能是治疗这种隐匿性疾病最有效的策略。TPP的术后并发症可接受,TPP可延长无进展生存率和总生存率,且TPP后铂类耐药复发的发生率远低于既往结果。      

Effective therapy for peritoneal dissemination in gastric cancer

Peritoneal dissemination is the most frequent cause of death from gastric cancer, accounting for death in 20% to 40% of patients. Preoperative intraperitoneal chemotherapy, peritonectomy, intraoperative chemohyperthermic perfusion, and early postoperative intraperitoneal chemotherapy are treatment modalities specifically designed to eliminate peritoneal dissemination and progression. Preoperative intraperitoneal chemotherapy is for containment of peritoneal free cancer cells, and also may facilitate complete eradication of visible peritoneal dissemination by peritonectomy. Further, complete cytoreduction can be achieved more often when peritonectomy is included in the surgical treatment of gastric cancer with peritoneal dissemination. Phase III data shows prolonged survival attributed to complete cytoreduction. Aggressive cytoreduction of peritoneal dissemination by peritonectomy can reduce residual tumor burden to micrometastases on the peritoneal surface that can be treated by intraoperative intraperitoneal chemotherapy and early postoperative intraperitoneal chemotherapy. Among all these modalities, surgical cytoreduction is probably the most important for survival benefit. If the surgical cytoreduction is visibly incomplete, prolonged survival cannot be expected, despite subsequent treatment. The surgeon's goal is to reduce the cancer cell burden to a microscopic level. Continued refinement of phase II studies is needed for maximal benefit and to standardize the technical and chemotherapeutic options of each modality.     

Cytoreductive surgery and modified heated intraoperative intraperitoneal chemotherapy (HIPEC) for advanced and recurrent ovarian cancer – 12-year single center experience

Background

The present study reviews our 12-year results with cytoreductive surgery and HIPEC in patients with advanced primary and recurrent ovarian cancer.

Methods

During the period from January 1995 to December 2007, 56 patients (31 with primary and 25 with recurrent epithelial ovarian cancer) underwent cytoreductive surgery and HIPEC (Doxorubicin intra-operatively, and cisplatin next 1–5 postoperative days) at our department.

Results

52 (92.8%) patients had no gross residual disease after the complete surgical procedure (Sugarbaker completeness of cytoreduction CC, score 0–1), and 4 patients had macroscopic residual disease (CC-2 or CC-3) Average PCI (peritoneal cancer index) was 13.4 (4–28). Mean follow-up was 56 months (range, 1–135). The median operation time was 279 min (range 190 ± 500 min). Median total blood loss was 850 mL (range 250 ± 1550 mL). The median survival time was 34.1 months for primary, 40.1 for recurrent ovarian cancer without statistically significance difference (p > 0.05) and median disease-free survival was 26.2 months. The PCI was equal or less than 12 in 31 patients and their median survival time was statistically significant longer than median survival time of months for the 25 patients with PCI greater then 12 (p < 0.01). Morbidity and mortality rate were 17.8% (10/56) and 1.8% (1/56).

Conclusion

This series indicates that in the majority of patients with primary and recurrent advanced ovarian cancer, cytoreductive surgery combined with HIPEC can lead to a substantial increase in subsequent rates of disease-free and overall survival.     

Clinical pathway for the management of resectable gastric cancer with peritoneal seeding: best palliation with a ray of hope for cure

Peritoneal seeding from primary gastric cancer occurs in 10-20% of patients. The diagnosis of this advanced disease is usually not provided by clinical studies prior to abdominal exploration. From the data available in the literature, the surgeon is forced to make an intraoperative judgement concerning the risks and benefits of an aggressive management plan versus supportive care. A strategy has evolved that utilizes peritonectomy and extended gastrectomy to maximally cytoreduce tumor combined with perioperative intraperitoneal chemotherapy. In the current state of the art, the perioperative intraperitoneal chemotherapy is heated and manually distributed to provide uniform treatment to all peritoneal surfaces and the resection site. The pharmacologic parameters have been established and the results of phase II studies are reported. Five-year survival of patients in whom a complete cytoreduction was possible is approximately 10% with a median survival of 12 months. Gastrectomy with peritonectomy to eliminate all visible implants combined with perioperative intraperitoneal chemotherapy should be used in selected patients with primary gastric cancer and carcinomatosis.     

Indication of peritonectomy for peritoneal dissemination

A total of 521 patients with peritoneal carcinomatosis (PC) were treated by peritonectomy and perioperative chemotherapy. Each of the 95, 58, 316, 31, 10 and 11 patients were from gastric, colorectal, appendiceal, ovarian, small bowel cancer and mesothelioma, respectively. The distribution and volume of PC are recorded by the Sugarbaker peritoneal carcinomatosis index (PCI). Peritonectomy was performed with a radical resection of the primary tumor and all gross PC with involved organs, peritoneum, or tissue that was deemed technically feasible and safe for the patient. The postoperative major complication of grade 3 was found in 14%, and total 30-day mortality was 2.7%. The survival of gastric cancer patients with a PCI score ≤ 6 was significantly better than those with a PCI score ≥ 7. In appendiceal neoplasm, patients with PCI score less than 28 showed significantly better survival than those with PCI score greater than 29. The survival of colorectal cancer patients with a PCI score ≥ 11 was significantly poorer than those with a PCI score ≤ 10. Among the various prognostic factors in appendiceal neoplasm and gastric cancer patients, CC-0 complete cytoreduction was the most important independent prognostic factor. Peritonectomy is done to remove macroscopic disease and perioperative intraperitoneal chemotherapy to eradicate microscopic residual disease aiming to remove disease completely with a single procedure. Peritonectomy combined with perioperative chemotherapy may achieve long-term survival in a selected group of patients with PC. The higher mortality rate underlines this necessarily strict selection that should be reserved to experienced institutions.     

原发性腹膜恶性肿瘤28例临床分析

背景与目的：原发性腹膜恶性肿瘤是一种临床上少见的肿瘤,其形态学及临床表现与晚期卵巢癌十分相似,常常因误诊而延误治疗。本研究的目的是通过分析28例原发性腹膜恶性肿瘤的临床特点、诊断、治疗及其预后,以提高对该病的认识。方法：对1996年1月～2002年2月我院收治的28例原发性腹膜恶性肿瘤患者的临床资料进行回顾性分析。结果：原发性腹膜浆液性乳头状腺癌20例,原发性腹膜恶性混合苗勒氏管肿瘤8例;患者年龄33～74岁,中位年龄54岁。28例中术前22例误诊,误诊率为79％;全部病例均行细胞减灭术,术后CAP方案或TP方案化疗。术后生存时间为1～83个月,中位生存时间为30个月。结论：应提高对原发性腹膜恶性肿瘤临床特点的认识,早期诊断,及时进行肿瘤细胞减灭术,术后辅助化疗,提高其生存率。