Lymphovascular space involvement is the sole independent predictor of lymph node metastasis in clinical early stage endometrial cancer

Purpose

To determine clinicopathological risk factors associated with lymph node metastasis in endometrial cancer (EC).

Methods

Clinicopathological data of patients who underwent comprehensive surgical staging for clinical early stage EC between 2001 and 2010 at Hacettepe University Hospital was retrospectively reviewed.

Results

Two hundred and sixty-one patients were included. There were 26 patients (10.0 %) with lymph node metastasis. Of these, 14 (5.4 %) had pelvic lymph node metastasis, 8 (3.1 %) had both pelvic and paraaortic lymph node metastasis, and 4 (1.5 %) had isolated paraaortic metastasis. Univariate analysis revealed tumor size >2 cm, type II cancer, grade III histology, cervical stromal invasion, deep myometrial invasion, positive peritoneal cytology, adnexal involvement, serosal involvement, and presence of lymphovascular space involvement (LVSI) as significant clinicopathological factors associated with retroperitoneal lymph node metastasis. For paraaortic metastasis either isolated or with pelvic lymph node metastasis, significant factors were grade III disease, cervical stromal invasion, deep myometrial invasion, positive peritoneal cytology, adnexal involvement, serosal involvement, pelvic lymph node metastasis, and presence of LVSI. The only factor associated with isolated paraaortic lymph node metastasis was LVSI. Multivariate analysis revealed LVSI as the only independent factor for both retroperitoneal and paraaortic lymph node metastasis (odds ratio 14.9; 95 % confidence interval 3.8–59.0; p < 0.001, and odds ratio 20.9; 95 % confidence interval 1.9–69.9; p = 0.013, respectively).

Conclusion

Lymphovascular space involvement is the sole predictor of lymph node metastasis in EC. Therefore, LVSI status should be requested from the pathologist during frozen examination whenever possible to consider when a decision to perform or omit lymphadenectomy is made.     

Prospective assessment of the prevalence of pelvic,paraaortic and high paraaortic lymph node metastasis in endometrial cancer

Objective

To prospectively define the prevalence of lymph node metastasis (LNM) in at risk endometrial cancer (EC).

Methods

From 2004 to 2008, frozen section based Mayo Criteria prospectively identified patients “not at-risk” of LNM (30% EC population; grade I/II, < 50% myometrial invasion and tumor diameter ≤ 2 cm) where lymphadenectomy was not recommended. The remaining 70% EC cohort was considered “at-risk” of LNM; where a systematic pelvic and infrarenal paraaortic lymphadenectomy was recommended. Patients were prospectively followed. The area between renal vein and inferior mesenteric artery (IMA) was labeled as high paraaortic area. For calculating the prevalence of LNM in high paraaortic area, the denominator was the population with known anatomic location of nodal tissue in relation to the IMA.

Results

Of the 742 patients, 514 were at risk; of which 89% underwent recommended lymphadenectomy. A mean (± standard deviation) of 36 (± 14) pelvic and 18 (± 9) paraaortic nodes were harvested. The prevalence of pelvic and paraaortic LNM was 17% and 12%, respectively. In presence of pelvic LNM, 51% had paraaortic LNM. In absence of pelvic LNM, 3% had paraaortic LNM; of which 67% was located exclusively in high paraaortic area. Among patients with paraaortic LNM, 88% had high paraaortic LNM; and 35% had only high paraaortic LNM. The cases of paraaortic LNM with negative pelvic nodes seemed to cluster in moderate to high grade endometrioid EC with ≥ 50% myometrial invasion.

Conclusion

We present reference data for the prevalence of LNM in at-risk EC patients to guide lymphadenectomy decisions for clinical and research purposes.     

Indispensability of Pelvic and Paraaortic Lymphadenectomy in Endometrial Cancers

The purposes of this study were to analyze the relationship between retroperitoneal lymph node (RLN) metastasis and clinical and pathologic risk factors in endometrial cancers, and to clarify the correlation between RLN metastasis and survival of patients with the disease. This analysis included 63 patients with endometrial cancer who underwent simultaneous pelvic lymph node (PLN) and paraaortic lymph node (PAN) dissection between April 1988 and December 1995. Patients with stage Ia grade 1 and stage IV disease were excluded from this analysis. Both PLN and PAN metastases were found in 10.0% (4/40) of patients with stage I (FIGO, 1988) disease. Of 14 cases with PLN metastases, 8 (57.1%) had PAN metastases simultaneously, whereas 4 (8.2%) of 49 cases without PLN metastases had PAN metastases. There was no significant relationship between the sites or numbers of positive PLN and PAN metastases. Multivariate analysis revealed that poor grade and deep myometrial invasion had an independent relationship with PAN metastases, whereas vascular space invasion and cervical invasion were independently associated with PLN metastases. When divided into the groups of stage I–II and stage III, the prognosis of patients with RLN metastases was significantly poorer than that of patients without RLN metastases in each stage. Furthermore, survival of patients with PAN metastases was significantly worse compared with that of patients with only PLN metastases (44.4 and 80.0%, respectively,P< 0.05). These results reveal that PLN and PAN metastases occur frequently even in early-stage endometrial cancer, and that RLN metastases, especially PAN metastases, have a serious impact on patient survival. In conclusion, systemically simultaneous pelvic and paraaortic lymphadenectomy is essential for all the patients with endometrial cancer except those with stage Ia grade 1 and stage IV to provide prognostic information and select suitable postoperative treatment as well as to perform accurate FIGO staging, provided the condition of the patient permits.     

The importance of adjuvant chemotherapy and pelvic radiotherapy in high-risk early stage endometrial carcinoma

Objective

To determine the impact of a policy change in which women with high-risk early stage endometrioid endometrial cancer (EEC) received adjuvant chemoradiotherapy.

Methods

This is a population-based retrospective cohort study of British Columbia Cancer Registry patients diagnosed from 2008 to 2012 with high-risk early stage EEC, who received adjuvant chemoradiotherapy after primary surgery. High-risk early stage was defined as the presence of two or more high-risk uterine factors: grade 3 tumor, more than 50% myometrial invasion, and/or cervical stromal involvement. Adjuvant therapy consisted of 3 or 4 cycles of carboplatin and paclitaxel chemotherapy, followed by pelvic radiotherapy. Sites and rate of recurrence were compared to a historical cohort diagnosed from 2005 to 2008 in which none of the patients received adjuvant chemoradiotherapy. Five-year progression-free and overall survival rates were calculated.

Results

The study includes 55 patients. All patients except for 2 received at least 3 cycles of chemotherapy. All patients received pelvic radiotherapy except for 2 who received brachytherapy only. Median follow-up was 27 months (7–56 months). Four patients (7.3%) recurred, including three with distant recurrence only and one with both a pelvic and paraaortic nodal recurrence. The historical cohort had a 29.4% recurrence rate, and therefore the hazard ratio for recurrence was 0.27 (95% CI 0.02–4.11). Five-year progression-free and overall survival rates were 88.6% and 97.3%, respectively.

Conclusion

Patients with high-risk early stage endometrial carcinoma treated with adjuvant chemoradiotherapy have a low rate of recurrence compared to those not receiving such therapy.     

Can a lymphadenectomy be avoided in early-stage endometrial adenocarcinoma?

Purpose

Determination of early disease recurrence in patients with early-stage endometrial cancer operated laparoscopically without pelvic or paraaortic lymphadenectomy.

Methods

Retrospective chart review of all patients with endometrial carcinoma operated with laparoscopic-assisted vaginal hysterectomy with bilateral salpingo-oophorectomy between 2004 and 2008.

Results

81 patients were eligible for data analysis. The operation time varied between 32 and 284 min. None of the patients suffered serious intraoperative complications. All patients had endometrial carcinoma of endometrioid type. As adjuvant therapy, patients received no further therapy (n = 30), radiation with brachytherapy with an afterloading technique alone (n = 36) or brachytherapy in combination with percutaneous radiation (n = 15). The observation period varied between 19 and 28 months (median 26 months). No patients were lost to follow-up. During the observation period, none of the patients had recurrence of disease or died.

Conclusions

Laparoscopic-assisted vaginal hysterectomy with bilateral salpingo-oophorectomy without pelvic or paraaortic lymphadenectomy combined with stage-adapted postoperative irradiation is a safe and efficient treatment option for patients with early-stage endometrial cancer of the endometriod type regarding early disease recurrence.     

Carcinoma IB of the endometrium: spread and prognostic factors

The prognostic factors and their intercorrelation in 47 patients with IB endometrial cancer are presented. The data reveal the particular behaviour of the lymphatic involvement: five patients (10.6%) showed metastases to pelvic lymph nodes and six patients (12.8%) had paraaortic node metastases; altogether two women (4.2%) had histological evidence of involvement of pelvic and paraaortic nodes. Both histological grade and depth of myometrial invasion showed a characteristic relationship with the lymphatic spread: the percentage of lymph node metastases seems to bear relation to progression of myometrial penetration (M2-M3) and to histological differentiation (G2-G3).     

Laparoscopic surgery in obese women with endometrial cancer

STUDY OBJECTIVE: To analyze perioperative and postoperative outcomes of laparoscopic treatment of endometrial cancer in two groups of women of different weight. DESIGN: Prospective, multicenter clinical study (Canadian Task Force classification II-1). SETTING: Three laparoscopic oncology centers. PATIENTS: Sixty-five consecutive women with endometrial cancer, of whom 32 were not obese (weight <81. 7 kg) and 33 were obese (weight (3)81.7 kg, body mass index 30-40). INTERVENTION: Laparoscopic surgery. MEASUREMENTS AND MAIN RESULTS: Three patients (1 nonobese, 2 obese) in whom laparoscopy was converted to laparotomy were removed from data analysis. Laparoscopy in the remaining 62 (94.38%) was completed successfully. Hysterectomy and pelvic and paraaortic lymphadenectomies were performed based on tumor grade and depth of myometrial invasion. In both groups, 28 women underwent pelvic lymphadenectomy and 21 paraaortic lymph node dissection or sampling. Eight patients had metastases in pelvic or paraaortic nodes. Deep myometrial invasion over 50% was present in five obese and two nonobese women. Mean operating time was 166 and 172 minutes, respectively. The rate of major complications and conversions was higher in the obese group (8 vs 5). CONCLUSION: Laparoscopic surgery is feasible in obese women and may also be considered for endometrial cancer, which typically occurs in obese women.     

Quantifying the risk of recurrence and death in stage III (FIGO 2009) endometrial cancer

Objective

Advanced endometrial cancer patients comprise a heterogeneous group. This study assessed the association of clinicopathological factors with relapse and death from endometrial cancer.

Methods

Eligible patients were treated for stage III (FIGO 2009) endometrial adenocarcinoma, had peritoneal cytology performed, and had no gross residual disease post-operatively.

Results

Of 192 patients, 59% were ≥ 60 years old, 48% had ≥ 50% myometrial invasion, 71% lymphovascular invasion, 25% cervical stromal invasion, 37% adnexal involvement, and 23% positive peritoneal cytology. High-grade histology (serous, clear cell, undifferentiated, or grade 3 endometrioid) was present in 45%. Pelvic lymphadenectomy was performed in 93% and para-aortic lymphadenectomy in 73%. Adjuvant chemotherapy and/or radiation therapy was administered to 93%. At a median follow-up of 42 months, the 5-year rate of relapse was 37% and of death from endometrial cancer was 30%. On multivariate analysis, both outcomes were associated with high-grade histology, positive peritoneal cytology, and deep myometrial invasion (p ≤ 0.04). The cohort was divided into subgroups of patients with 0 (n = 46), 1 (n = 83), or ≥ 2 (n = 63) of these high-risk characteristics. The 5-year relapse rate for patients with 0 risk factors was 13%, 1 risk factor was 27%, and ≥ 2 risk factors was 62% (p < 0.001). The corresponding 5-year rates of death from endometrial cancer were 11%, 20%, and 56%, respectively (p < 0.001).

Conclusions

Stratification of stage III endometrial cancer according to high-grade histology, positive peritoneal cytology, and deep myometrial invasion is useful for prognostication and may grant insight into the optimal treatment for specific subgroups of patients.     

Implementation of robot-assisted gynecologic surgery for patients with low and high BMI in a German gynecological cancer center

Purpose

To present a single center outcome from an initial series of gynecological robotic cases with a special reference to obese patients.

Methods

A retrospective evaluation of 116 women, undergoing elective gynecologic robot-assisted surgery from February 2011 to December 2012. Procedures included hysterectomy (HE), radical HE, adnexectomy, myomectomy, pelvic lymphadenectomy and paraaortic lymphadenectomy, sentinel node extraction, and omentectomy. The feasibility and outcome were investigated in relation to normal and high body mass index (BMI < 30 and BMI ≥ 30).

Results

The overall complication rate was low (15/116; 12.9 %). The number of perioperative complications was not different between the patients with normal BMI compared to those with high BMI. Five operations were converted to open surgery due to vascular injury (2), intestinal injury (2) and one insufficiently exposed paraaortic field in an endometrial cancer patient. Urinary bladder was injured once. Late complications included vaginal dehisce (2), vaginal hemorrhage (1), cuff hematoma (4), lymphocyst (1) and two urinary tract injuries. The rate of the late complications was not significantly different in the two groups of patients (p = 0.139). A significant difference in patients’ positioning time was observed between normal weighted and obese patients (35 and 55 min, p < 0.001).

Conclusion

Robotic procedure was feasible and could be implemented for treating the first setting of mixed indications for gynecologic surgery. Robotic surgery may offer particular advantages in obese patients with no conversions and no wound complications.     

Perioperative allogenic blood transfusions and the risk of endometrial cancer recurrence

Purpose

To evaluate the effect of perioperative blood transfusions on the risk of recurrence of endometrial cancer.

Methods

This study is a retrospective analysis of 358 consecutive patients, without a history of other tumors, who underwent surgery for endometrial cancer between January 2000 and April 2010.

Results

Women who did not need any transfusion (N = 331) and patients who received allogenic blood donations (N = 27) were compared in terms of risk of cancer recurrence. The surgical standard procedure included peritoneal washing for cytologic examination, total hysterectomy + bilateral adnexectomy (N = 358), and pelvic lymphadenectomy (N = 227). The two groups were homogeneous in term of age, BMI, previous abdominal surgery, type of intervention, operative time, nodal count, and hospital stay. The median (range) estimated blood loss was higher in the transfusion group, 400 mL (100–2,000 mL), than in the non-transfusion group, 150 mL (10–1,000 mL). Median (range) follow-up was 67.5 months (6–132.4 months). Blood transfusions were associated with a higher relapse rate (P = 0.0021). At multivariate analysis, administration of packed red blood cells remained independently associated with recurrence (OR 4.64; CI 95 % 1.45–14.9), as well as myometrial invasion ≥50 % (OR 2.88; CI 95 % 1.18–7.07) and stage >1 (OR 4.24; CI 95 % 1.75–10.3).

Conclusions

The use of allogenic blood transfusions is associated with a higher risk of recurrence. We hypothesize that this could be due to a transitory perioperative immunodepression that promotes the spread of neoplastic cells.     

Application of 1.5 T magnetic resonance imaging in endometrial cancer

Objective  

To determine the diagnostic accuracy, sensitivity and specificity of magnetic resonance imaging (MRI) in detecting myometrial invasion, cervical involvement and disease stage in endometrial cancer.     

Advanced Endometrial Cancer Detected at 7 Months after Childbirth

It is very rare to find endometrial cancers arising within a short period following childbirth, presumably because pregnancy has a protective effect against endometrial cancer mediated by elevated secretion of progesterone. We present the case of a 30-year-old Japanese woman with stage IIIC endometrial cancer that was found 7 months after childbirth. The patient was treated with surgery followed by 6 cycles of intravenous combination chemotherapy and oral administration of medroxyprogesterone acetate. Histopathological examination of surgical specimen revealed poorly differentiated adenosquamous carcinoma of the endometrium with deep myometrial invasion, cervical stromal involvement, and pelvic and paraaortic lymph node metastases. The disease progressed rapidly and the patient died of the disease.     

Pelvic radiation in stage I endometrial adenocarcinoma with high-risk attributes

From 1977 to 1987, 45 patients with FIGO stage I endometrial adenocarcinoma with high-risk attributes and disease confined to the pelvis were prospectively treated with postoperative pelvic radiation. By study design, all patients underwent staging laparotomy with pelvic and paraaortic lymphadenectomy. All patients had either grade 1 or 2 adenocarcinoma and greater than 50% myometrial invasion or grade 3 adenocarcinoma with less than or greater than 50% myometrial invasion. The estimated 5-year survival for all 45 patients was 77% and the 5-year disease-free interval was 82%. Regional control was achieved in 89% of all patients, with 4% recurring at distant sites. When patients were stratified according to surgical-pathologic findings, 33 patients with disease confined to the uterus or uterus and pelvic nodes (surgical stage I) had estimated 5-year survival and disease-free interval of 88%. Of these 33 patients, 10 with grade 1 or 2 adenocarcinoma and deep myometrial invasion had 5-year disease-free intervals of 100%, while 23 patients with grade 3 adenocarcinoma with less than or greater than 50% myometrial invasion had disease-free intervals of 79 and 91%, respectively. From these results, it was concluded that patients with high-risk attributes demonstrated to have disease confined to the uterus or uterus and pelvic nodes can achieve excellent survival following surgical staging and postoperative pelvic radiation.     

A Study of Pelvic and Para-Aortic Lymph Node Involvement in Surgically Staged Endometrioid Carcinoma of Endometrium

Purpose

The purpose of this study was to investigate the influence of the depth of myometrial invasion and tumor grade on lymph node involvement in endometrial carcinoma.

Methods

Patients with endometrioid carcinoma of endometrium who underwent surgical staging between January 1999 and September 2010 under the division of gynecologic oncology were studied retrospectively. Patients treated by radiotherapy or chemotherapy before surgeries were excluded.

Results

The study group included 61 patients. Six patients had lymph node metastasis, of which 83.3 % had >50 % myometrial invasion (P = 0.052). Grades 1, 2, and 3 were each seen in 33.3 % of them (P = 0.061). When the study group was divided into two sets, namely, those with <50 and >50 % myometrial invasion, the odds ratio was 10.3, which means that the chance of the prevalence of lymph node metastasis in the latter group is 10 times more.

Conclusions

Although the P value was not significant, the odds ratio reveals that there is an increased risk of lymph node positivity with deeper myometrial invasion. Surgical staging needs to be done for all operable cases of carcinoma endometrium to determine the prognosis and further management.     

Accuracy of frozen-section diagnosis at surgery in clinical stage I and II endometrial carcinoma.

OBJECTIVES: The purpose of our study was to determine if frozen section accurately identifies certain poor prognostic pathologic factors in endometrial carcinoma that are known to be associated with pelvic and paraaortic nodal metastasis, including deep myometrial invasion, poorly differentiated tumor, cervical invasion, adnexal involvement, and poor histologic type. STUDY DESIGN: The frozen-section pathologic results of 199 patients with clinical stage I and II endometrial cancer were retrospectively compared with permanent-section pathologic findings. RESULTS: The depth of myometrial invasion (superficial third vs deep two thirds) was accurately determined by frozen-section diagnosis at surgery in 181 of 199 cases (91.0%). The sensitivity of frozen-section diagnosis for deep myometrial invasion was 82.7%, and the specificity was 89.1%. The following tumor characteristics were accurately determined on frozen section at surgery: poorly differentiated tumor (95.0%), cervical invasion (94.0%), adnexal involvement (98.5%), and histologic type (94.0%). Frozen section underestimated deep myometrial invasion in 17.3% of patients with this characteristic and poorly differentiated tumor in 26.3% when compared with permanent-section diagnosis. In patients with unfavorable histologic types, papillary serous and adenosquamous carcinomas were the most commonly misdiagnosed histologic types by frozen section at surgery (70.6%). However, when the preoperative curettage pathologic findings were included, these inaccuracies in tumor grade and histologic type dropped to 15.8% and 35.3%, respectively. Only 13 of 199 patients (6.5%) were not correctly identified by frozen section at surgery as having poor prognostic pathologic features. CONCLUSION: Frozen section diagnosis at surgery is an important procedure that enables the surgeon to identify patients at high risk for pelvic and paraaortic nodal metastasis.     

Valoración de la invasión miometrial en el carcinoma de endometrio mediante resonancia magnética

Objective

Evaluation of feability of magnetic resonance (MRI) in the assessment of the grade of myometrial invasion in endometrial carcinoma in our service.

Material and method

Retrospective study about pelvic MRI (dynamic, intravenous contrast media with gadolinium) sistematically made in the presurgical study of endometrial carcinoma in our service. 123 MRI were made in many other patients diagnosed of endometrial carcinoma between the year 2000-2004, both included. Afterwards, the results were contrasted with the histologic studies of the surgical piece.

Results

In 112 of the 123 neoplasms studied there was myometrial invasion valorated in the anatomopathologic study (paraffin sections). The MRI presented concordance with the histology in 101 cases, the positive predictive value (PPV) was 97% and although the negative predictive value (NPV) was 38.8%, the corrected negative predictive value (cNPV) was 87.5%.

Conclusions

Pelvic magnetic resonance with intravenous contrast media is a good technique to leave out deep myometrial invasion in endometrial carcinoma (cNPV: 87.5%), but its value is lower when pretending to asses superficial myometrial invasion (NPV 38,8%).When the uterine miomas are associated to endometrial carcinoma the specificity (25%) and the cNPV (14%) endure a great descent.     

子宫内膜癌腹膜后淋巴结转移相关因素分析

目的:探讨预测子宫内膜癌腹膜后淋巴结转移的指标,以期为确定子宫内膜癌手术范围提供参考。方法:回顾分析1997年1月至2006年12月初治为手术治疗的641例子宫内膜癌患者的临床与病理资料,单因素分析用χ2检验和Fish确切概率法,多因素分析用Logistic回归模型。结果:经多因素分析显示,病理分级G3、深肌层浸润、附件转移对预测子宫内膜癌盆腔淋巴结(pelvic lymph node,PLN)转移具有统计学意义;盆腔淋巴结转移与腹主动脉旁淋巴结(para-aortic lymph node,PALN)转移显著相关。结论:病理分级G3、深肌层浸润、附件转移是子宫内膜癌盆腔淋巴结转移的重要预测因素;盆腔淋巴结转移对预测腹主动脉旁淋巴结转移具有重要意义。病理分级G3、深肌层浸润、附件转移的子宫内膜癌患者应行盆腔淋巴结清扫术,并根据术中患者的盆腔淋巴结状况决定是否行腹主动脉旁淋巴结清扫术。     

Is there a relationship between endometrial polyps and obesity,diabetes mellitus,hypertension?

Objective

The purpose of our study was to evaluate the relationship between endometrial polyps and obesity, diabetes mellitus (DM) and hypertension (HT).

Materials and methods

202 patients who applied to our gynecology clinic with complaints of infertility, recurrent pregnancy loss and abnormal uterine bleeding, diagnosed to have endometrial polyps by hysteroscopy, were compared with 79 patients without polyps, retrospectively. The relationships between risk factors and presence of a polyp and polyp size were analyzed.

Results

The mean age of cases with endometrial polyps was significantly greater than the controls. The mean body mass index (BMI) of the cases with polyps was also significantly greater than the controls. There was no significant difference between groups with respect to prevalence of DM or HT.

Conclusion

This study suggests that obesity is an independent risk factor in the development of endometrial polyps. Clinicians should be aware in terms of endometrial polyps in the assessment of patients with BMI ≥30. There was no relationship between HT or DM with presence of polyps.     

冰冻病理诊断预测子宫内膜癌淋巴转移的临床价值研究

目的:研究影响子宫内膜癌患者淋巴结转移的因素,评价术中冰冻病理预测淋巴结转移的作用。方法:回顾分析1996年7月至2008年1月在上海交通大学医学院附属仁济医院和2008年9月至2011年9月在同济大学附属第一妇婴保健院收治的共389例子宫内膜癌患者的临床资料,195例患者实施了盆腔淋巴结切除,其中43例同时行腹主动脉旁淋巴结切除。分析患者淋巴结转移的临床相关因素,评价冰冻病理结果在预测淋巴结转移中的价值。结果:盆腔淋巴结转移率为12.8%(25/195),腹主动脉旁淋巴结转移率为11.6%(5/43)。深肌层浸润(P<0.001)、宫颈累及(P<0.001)、ER阴性(P=0.001)与盆腔淋巴结转移显著相关。肿瘤细胞级别升高、病理类型(Ⅰ型、Ⅱ型)与盆腔淋巴结转移无显著相关性。低风险子宫内膜癌(排除G3和肌层深度≥1/2)患者的盆腔淋巴转移率为4.5%(3/67)。按冰冻结果制定4种预测模型,G1+限于内膜组,淋巴结阳性率为0;G1+<1/2肌层组,盆腔和腹主淋巴结阳性率均为2.4%;G2+<1/2肌层组,盆腔和腹主淋巴结阳性率分别为4.8%、0;未发现G2+限于内膜的病例。淋巴结切除组的生存率高于未切除组(79.5%vs 75.9%),但无统计学差异(P=0.086)。结论:冰冻病理用于预测淋巴结转移的作用有限,建议对除G1限于内膜的子宫内膜样腺癌患者,其余均应实施全面的分期手术。     

Accuracy of frozen-section examination for myometrial invasion and grade in endometrial cancer

Objective

To evaluate the accuracy of frozen section (FS) analysis in endometrial cancer.

Study design

The medical records of 816 patients with stage IA–IVB endometrial carcinoma were evaluated. Concordance of the frozen section examination and postoperative evaluation in terms of the depth of myometrial invasion (MI) and grade was assessed.

Results

The mean age of the patients was 58.1 years. Postoperative pathology revealed endometrioid type tumor in 756 patients. Concordance of intraoperative and postoperative pathology results in terms of grade was 89%. This rate was 96.8% for grade 1, 86% for grade 2 and 91.3% for grade 3 tumors. Sensitivity and specificity of intraoperative evaluation for grade 1, grade 2 and grade 3 were 89.3%, 91.2%, 77.8% and 93.1%, 96.1%, 99.5%, respectively. Intraoperative and postoperative determination of MI was consistent in 85.4% of patients. MI was assessed accurately in 78.5% of patients with no involvement of myometrium and in 90.5% and 95.3% of patients with myometrial invasion <1/2 and ≥1/2, respectively. Sensitivity and specificity of FS in prediction of the absence of MI, MI < 1/2 and ≥1/2 were 60%, 91.5%, 88.8% and 96.6%, 88.3%, 98.3%, respectively. The accuracy of myometrial invasion was affected by the postoperative grade. Concordance was higher in grade 2 and 3 than grade 1 tumors.

Conclusion

The accuracy of intraoperative pathologic evaluation in endometrial cancer is reasonably high. For that reason, results of the intraoperative pathologic examination should be taken into consideration primarily in the management for lymphadenectomy.