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1.
IntroductionRadiation-induced sarcomas are a rare and late complication of radiotherapy for breast carcinoma which often have poor prognosis.MethodsThis study is a retrospective review of 25 patients referred to a regional sarcoma unit between 1978 and 2009.ResultsRadiation-induced sarcoma following the diagnosis and treatment of breast cancer occurred after a mean period of 156 months. Anatomical sites involved were the breast, chest wall, clavicle, scapula, humerus and axilla. Twenty one patients had wide local excision followed by chest wall reconstruction, latissimus dorsi flap cover or limb amputation. The estimated five years survival following the diagnosis of the radiation-induced sarcoma was 27% and the local recurrence rate 52%.ConclusionRadiation-induced sarcoma following breast cancer has high local recurrence rate and poor prognosis. They should be managed in a multi-disciplinary setting. Long-term follow-up of patients treated with radiotherapy for breast cancer is therefore advisable.  相似文献   

2.
PurposePatients with metastatic lobular breast carcinoma constitute a heterogeneous group with distinguishing features. Our aim was to describe the features and survival of them, and further subdivide them into subcategories for prognostic stratification and treatment planning.Patients and methodsPatients with de novo metastatic breast cancer from 2010 to 2018 were identified using the SEER database. Multivariate logistic regression analysis was conducted to calculate odds ratios. The within-pair difference was minimized by propensity score matching. Multiple comparisons based on Cox proportional hazards model were performed to investigate the interactions of M1 subcategory and treatment modality on survival.ResultsA total of 1,675 patients with de novo metastatic lobular breast carcinoma were identified, they were more likely to have HR+/HER2- subtype, low histologic grade, low T/N stage, fewer metastatic sites, but worse prognosis compared with patients with metastatic ductular breast carcinoma. The M1 stage was subdivided into 3 subcategories with significantly different prognoses. The benefits of primary tumor surgery were more pronounced in M1a/b disease, whereas the benefits of chemotherapy increased with the progression of metastatic disease.ConclusionPatients with metastatic lobular breast carcinoma have unique clinicopathological characteristics and metastatic patterns. M1 subcategory assists prognosis stratification and treatment planning for such patients.  相似文献   

3.
《The surgeon》2020,18(4):208-213
BackgroundDespite therapeutic advances in the management of breast cancer, a significant number of patients present with locoregional recurrence. Treatment with hormonal, chemo or radiotherapy remains standard in such cases. However, in selected patients of recurrent breast cancer involving chest wall, multidisciplinary surgical approach could be considered.MethodsBetween 2010 and 2018, 21 patients with recurrent breast cancer, involving chest wall, were treated at a tertiary care center with resection and reconstruction. The mean age of the patients was 55 years (22–77 years).ResultsThe median interval from first breast resection to chest wall resection (CWR) for recurrent disease was 6 years (1–24 years). Eighteen patients underwent bony resection and 3 patients required extensive soft tissue resection. Complete resection was achieved in 90% of patients. All patients had chest wall reconstruction. There was no in-hospital mortality. During follow-up, 8 patients died, of which 7 were due to distant metastases. The 1 year and 3-year overall survival were 90% (95% CI 66–97) and 61% (95% CI 31–81) respectively. The disease-free survival at 1 and 3 years was the same at 70% (95% CI 45–86). At a mean follow up of 23 months, the average survival in patients operated for local recurrence is 51.7 months (95% CI 37.7–65.7) and 24.5 months (95% CI 7.3–41.7) for patients with distant metastatic recurrence.ConclusionA multidisciplinary oncoplastic approach for recurrent breast cancer, which includes chest wall resection and reconstruction is a useful adjunct in selected group of patients. This improves local disease control, symptoms and possibly disease-free survival.  相似文献   

4.
IntroductionDifferentiating between primary and secondary ovarian cancer can be a difficult task. In hereditary conditions breast malignancies and primary ovarian cancer often coexist.Presentation of caseWe present a 45-year-old patient with an ovarian mass two years after the diagnosis of a lobular, triple negative breast carcinoma. There was concern whether the lesion represented a metachronous ovarian cancer or a metastasis of the lobular carcinoma. The final histological examination showed a metastatic lesion, deriving from the lobular breast carcinoma, as evidenced by the immunohistochemical profile; nevertheless, there were changes in hormonal receptor expression in the metastatic lesion compared to the primary, triple negative tumor. The patient underwent genetic testing for BRCA1 and BRCA2 mutations and was negative. In the adjuvant setting the patient received 6 cycles of chemotherapy with carboplatin and paclitaxel; eighteen months later, the patient remains without disease recurrence.Discussion and conclusionThis case report highlights the role of imaging, histology and predominantly immunohistochemistry as valuable tools in the assessment of ambiguous ovarian lesions after breast cancer.  相似文献   

5.
Background: Metastatic breast cancer is generally believed to be associated with a poor prognosis. Therapeutic advances over the past two decades, however, have resulted in improved outcomes for selected patients with limited metastatic disease. Methods: Between March 1991 and October 2002, 31 patients had hepatic resection for breast cancer metastases limited to the liver. Clinical and pathologic data were collected prospectively from breast and hepatobiliary databases. Results: Median age of patients was 46 years (range, 31 to 70). Liver metastases were solitary in 20 patients and multiple in 11 patients. Median size of the largest liver metastasis was 2.9 cm (range, 1 to 8). Major liver resections (three or more segments resected) were performed in 14 patients, whereas minor resections (fewer than three segments resected) with or without radiofrequency ablation (RFA) were performed in 17 patients. No postoperative mortality occurred. Of the 31 patients, 27 (87%) received either preoperative or postoperative systemic therapy as treatment for metastatic disease. The median survival was 63 months; a single patient died within 12 months of hepatic resection. The overall 2- and 5-year survival rates were 86% and 61%, respectively, whereas the 2- and 5-year disease-free survival rates were 39% and 31%, respectively. No treatment- or patient-specific variables were found to correlate with survival rates. Conclusions: In selected patients with liver metastases from breast cancer, an aggressive surgical approach is associated with favorable long-term survival. Hepatic resection should be considered a component of multimodality treatment of breast cancer in these patients.  相似文献   

6.
PurposeAlthough there are current studies on breast cancer brain metastasis, population-level analysis is still lacking. As treatment for metastatic breast cancer has improved, an updated population-level analysis is necessary. Our aim was to use the SEER database to characterize the incidence and survival of patients with brain metastases at the initial diagnosis of breast cancer.Patients and methodsPatients with breast cancer from 2010 to 2018 were identified using the SEER database. The stratified incidence and median survival of patients with BM at diagnosis were described. Multivariate logistic and Cox regression were performed to determine the covariates associated with brain metastasis and survival outcomes, respectively. Multiple comparisons based on Cox proportional hazards model were performed for the analysis of interactive effects on overall survival.ResultsA total of 2,248 patients with brain metastases at the initial diagnosis of breast cancer were identified, accounting for 0.40% of all patients with breast cancer, and 7.26% of patients with metastatic disease. Incidence proportions were highest, and survival outcomes were worst among patients with hormone receptor (HR)-negative human epidermal growth factor receptor 2 (HER2)-positive and triple-negative subtypes. For patients with brain metastases, the prognostic differences among different molecular subtypes have been gradually narrowing, and the survival benefits from various treatment methods have been all increased over time.ConclusionOur study provides an updated population-level estimate of the incidence and survival for patients with brain metastases at the diagnosis of breast cancer, thus may help early identification, prognostic stratification and treatment planning for such patients.  相似文献   

7.
Background and purpose — Metastases engaging the acetabulum result in significant disability. We investigated the outcome after curettage and reconstruction of the defect with a protrusio cage, retrograde screws, and a cemented total hip arthroplasty.

Patients and methods — We retrospectively identified 70 consecutive patients who were surgically treated for metastatic disease of the acetabulum between 1995 and 2012 using the above technique. The type of primary tumor, extent of the disease, degree of acetabular erosion, and type of implant used were identified. Patient and implant survival, complications, and functional outcome were recorded.

Results — There were no mortalities in the perioperative period (30 days after surgery). Median overall patient survival was 12 months. Prosthesis survival was 92% at 1 year and 89% at 5 years. One third of the patients suffered a complication, the most frequent one being dislocation. The functional outcome was good. Multiple skeletal or visceral metastases and specific types of cancer were associated with poor patient survival.

Interpretation — Reconstruction of metastatic acetabular defects using a protrusio cage stabilized with retrograde screws and a cemented total hip arthroplasty is a safe procedure that provides efficient relief of symptoms. Patients with extensive disease, especially when diagnosed with specific types of cancer, have a very poor prognosis. The complication rate is substantial, the most frequent being dislocation. However, revision surgery is seldom required and prosthesis survival is high.  相似文献   

8.
IntroductionInflammatory breast cancer (IBC) is an uncommon, but aggressive form of breast cancer that accounts for a disproportionally high fraction of breast cancer related mortality. The aim of this study was to explore the peripheral immune response and the prognostic value of blood-based biomarkers, such as the neutrophil-to-lymphocyte ratio (NLR), in a large IBC cohort.Patients & methodsWe retrospectively identified 127 IBC patients and collected lab results from in-hospital medical records. The differential count of leukocytes was determined at the moment of diagnosis, before any therapeutic intervention. A cohort of early stage (n = 108), locally advanced (n = 74) and metastatic breast cancer patients (n = 41) served as a control population.ResultsThe NLR was significantly higher in IBC compared to an early stage breast cancer cohort, but no difference between IBC patients and locally advanced breast cancer patients was noted. In the metastatic setting, there was also no significant difference between IBC and nIBC. However, a high NLR (>4.0) remained a significant predictor of worse outcome in IBC patients (HR: 0.49; 95% CI: 0.24–1.00; P = .05) and a lower platelet-lymphocyte ratio (PLR) (≤210) correlated with a better disease-free survival (DFS) (HR: 0.51; 95% CI: 0.28–0.93; P = .03).ConclusionPatients with a high NLR (>4.0) have a worse overall prognosis in IBC, while the PLR correlated with relapse free survival (RFS). Since NLR and PLR were not specifically associated with IBC disease, they can be seen as markers of more extensive disease.  相似文献   

9.
ObjectiveThe relationship between loco-regional (LR) control and breast cancer survival was investigated with the intention of generating a new biological hypothesis to explain some of the paradoxes unaccounted for by the prevailing conceptual model of the disease.BackgroundThe progressive reduction of surgical aggressiveness has been accompanied by an increase of breast cancer survival mainly attributed to the adoption of adjuvant systemic therapies. More recently, it has been recognized that effective LR control may prolong the survival of breast cancer patients, although the reasons for this improvement have not yet been clearly defined.MethodsThe literature (PubMed) was reviewed for publications related to breast cancer LR treatments using the following key words: breast cancer surgery, breast cancer radiotherapy, breast cancer loco-regional control, breast cancer survival.ResultsAlthough breast cancer is frequently a multifocal disease, neither mastectomy nor whole breast irradiation are always mandatory to obtain adequate local control. Conversely, selected groups of patients carry a particularly elevated risk of LR relapse and require more effective treatments to be developed. True LR recurrences are associated with a decreased overall survival and this may be related to a complex relationship between circulating tumor cells, re-seeding of the primary tumor site and several metabolic effects linked to the act of surgery.ConclusionThe prevention of LR recurrences is a major goal of breast cancer care, which requires a better understanding of the complex relationships between the primary tumor and its metastatic process.  相似文献   

10.
ObjectivesThis study aims to assess the clinical outcomes of patients with metastatic breast cancer (MBC) who underwent local radiation therapy (RT) for the primary site.Material and methodsBetween 2005 and 2013, we retrospectively evaluated patients with MBC who received breast or chest wall RT with or without regional lymph node irradiation.Results2761 patients with breast cancer were treated with RT. Of them, 125 women with stage IV breast carcinoma were included. The median follow-up was 15 months (ranging from 3.8 to 168 months), when 54.7% of the patients had died; local progression was observed in 22.8% of the patients. The mean overall survival (OS) and local progression free survival (LoPFS) were 23.4 ± 2.4 months and 45.1 ± 2.9 months, respectively. Three- and five-year overall survival rates were, respectively, 21.2% and 13.3%. Local progression free survival was the same, 67.3%, at three and five years, respectively. Karnofsky Performance Status (KPS) (p = 0.015), number of metastatic sites (p = 0.031), RT dose (p = 0.0001) and hormone therapy (p = 0.0001) were confirmed as independent significant variables correlated with OS. The variables that were independently correlated with LoPFS were the number of previous chemotherapy lines (p = 0.038) and RT dose (p = 0.0001).ConclusionRT of the primary site in patients with MBC is well tolerated. The factors that presented positive impact on survival were good KPS, low disease burden (1–3 metastatic sites), and the use of hormone therapy.  相似文献   

11.
IntroductionLobular breast cancer (LBC) has an increased risk of gastrointestinal (GI) spread compared with ductal breast carcinoma. Breast cancer commonly metastasises to bone, lung, liver, central nervous system and rarely to the gastrointestinal tract. As the prognosis for breast cancer continues to improve with modern medical practice it is important to be aware of the various clinical presentations and the appropriate management of breast cancer metastases.Case presentationWe describe a case of a 60-year-old woman who presented with symptoms of bowel obstruction 30 months after undergoing mastectomy and adjuvant chemotherapy for LBC. A Computer Tomography (CT) scan showed terminal ileal thickening suggestive of Crohn's disease but histopathology revealed metastatic lobular carcinoma. Surgical resection to relieve her small bowel obstruction confirmed LBC.Clinical discussionThis case illustrates an unusual presentation of metastatic breast cancer causing small bowel obstruction with radiological features mimicking Crohn's disease.ConclusionPatients with breast cancer can present with intestinal obstruction due to metastatic spread to the small intestine; this may resemble Crohn's disease clinically and radiologically.  相似文献   

12.
BackgroundSkeletal metastases below elbow and knee are uncommon, those to tibia are even rarer. Diagnosis may be delayed, and often confused with primary bone tumors (in solitary metastases) or with osteomyelitis or arthritis. Management depends on extent of disease and severity of symptoms. In most cases, treatment is essentially directed towards symptom relief.MethodWe describe a case of metastases to the tibia and foot in a case of breast cancer after a long disease-free period.ResultsRoentgenogram appearance mimicked osteomyelitis, which was ruled out by absence of fever, sterile cultures and no response to antibiotics. Diagnosis was established by a bone biopsy, with immunohistochemistry demonstrating a carcinoma with estrogen and progesterone receptor positivity. The patient was managed with multiagent chemotherapy, hormone therapy, bisphosphonates and palliative radiotherapy. She remained stable for 1 year after which her disease progressed with cutaneous metastases, and she was given symptomatic treatment only.ConclusionManagement of acrometastases from breast cancer involves a multimodality approach. Both systemic therapy and local therapy (in the form of surgery or radiation therapy) may help. Treatment needs to be individualized depending on prognosis and extent of disease.  相似文献   

13.
Locoregional recurrence of breast cancer can occur in up to 30 per cent of patients and has often been considered to indicate a poor prognosis. We reviewed our experience with full-thickness chest wall resection for recurrent breast cancer and conducted a meta-analysis of the English literature to determine patient characteristics and outcomes. Twenty-two women with isolated chest wall recurrence of breast cancer were treated between 1970 and 2000 at our institution. We reviewed their preoperative demographics, operative management and outcome, and combined our results with seven other English language studies. A majority of women (90%) underwent a mastectomy as initial management of their breast cancer. Only 18 per cent of patients had metastatic disease at the time of chest wall resection, and 71 per cent of patients had an R0 resection. The 5-year disease-free survival at City of Hope National Medical Center (COH) was 67 per cent and was 45 per cent for the entire group of 400 patients. The 5-year overall survival was 71 per cent for the COH group and 45 per cent for the entire group. Several studies reported prognostic factors, the most common being a better prognosis in patients with a disease-free interval greater than 24 months. Full-thickness chest wall resection for patients with isolated local recurrence of breast cancer can provide long-term palliation and even cure in some patients.  相似文献   

14.

Background

Five percent of all patients with breast cancer have distant metastatic disease at initial presentation. Because metastatic breast cancer is considered to be an incurable disease, it is generally treated with a palliative intent. Recent non-randomized studies have demonstrated that (complete) resection of the primary tumor is associated with a significant improvement of the survival of patients with primary metastatic breast cancer. However, other studies have suggested that the claimed survival benefit by surgery may be caused by selection bias. Therefore, a randomized controlled trial will be performed to assess whether breast surgery in patients with primary distant metastatic breast cancer will improve the prognosis.

Design

Randomization will take place after the diagnosis of primary distant metastatic breast cancer. Patients will either be randomized to up front surgery of the breast tumor followed by systemic therapy or to systemic therapy, followed by delayed local treatment of the breast tumor if clinically indicated. Patients with primary distant metastatic breast cancer, with no prior treatment of the breast cancer, who are 18 years or older and fit enough to undergo surgery and systemic therapy are eligible. Important exclusion criteria are: prior invasive breast cancer, surgical treatment or radiotherapy of this breast tumor before randomization, irresectable T4 tumor and synchronous bilateral breast cancer. The primary endpoint is 2-year survival. Quality of life and local tumor control are among the secondary endpoints. Based on the results of prior research it was calculated that 258 patients are needed in each treatment arm, assuming a power of 80%. Total accrual time is expected to take 60 months. An interim analysis will be performed to assess any clinically significant safety concerns and to determine whether there is evidence that up front surgery is clinically or statistically inferior to systemic therapy with respect to the primary endpoint.

Discussion

The SUBMIT study is a randomized controlled trial that will provide evidence on whether or not surgery of the primary tumor in breast cancer patients with metastatic disease at initial presentation results in an improved survival.

Trial registration

NCT01392586.  相似文献   

15.
PurposeInformation on tubular carcinoma (TC) of breast is limited due to its rarity. A multi-institutional study was performed to investigate the prognosis and failure patterns of TC compared to invasive ductal carcinoma (IDC).Materials and methodsWe collected retrospective data on 205 patients with TC from eleven institutions. For each TC case, 3 cases with IDC were matched according to similar size, t-stage, and n-stage from the same institution. Patterns of failure, disease free survival (DFS) and overall survival (OS) were assessed and compared between the groups.ResultsDFS at 5 years was 98.8% and 97.3% and OS at 5 years was 99.5% and 99.6% in TC and IDC, respectively. Among the patients with TC, 5 patients (2.4%) developed contralateral breast cancer, while 3 patients (0.5%) presented with contralateral breast cancer in patients with IDC.ConclusionsThe TC of breast presents an excellent prognosis, but the contralateral breast cancer tends to be more frequently observed compared to IDC in Korean women.  相似文献   

16.
Background: Considerable debate exists concerning the prognosis of breast cancer in male patients compared with that in female patients. Some studies have observed worse prognosis for men; others suggested the higher mortality rates were primarily due to delayed diagnosis. Methods: Survival time from diagnosis with invasive disease to death resulting from breast cancer of 58 men treated between 1973 and 1989 was compared with survival of 174 women treated between 1976 and 1978 who were matched by stage of disease and age at diagnosis. All patients were treated by mastectomy and axillary dissection. Results: Tumors were ⩽2 cm in 70% of cases and 55% were free of axillary metastases. The histology of the tumors differed significantly by gender (p<0.05). Significantly more men had estrogen receptor-positive tumors (87%) than did women (55%, p<0.001). Survival at 10 years was similar for male and female patients. Multivariate analysis controlling for tumor size, number of positive axillary lymph nodes, age at diagnosis, histology, and receptor status indicated no significant difference in survival of male compared with female patients. Conclusions: These data conflict with the conventional wisdom that breast cancer in men carries a worse prognosis than the disease in women. Although histology of the tumor and receptor status differed by gender, these factors did not have an impact on survival in these paired patients. Our data indicate that breast carcinoma in males is not biologically more aggressive than in females. Presented at the 49th Annual Cancer Symposium of The Society of Surgical Oncology, Atlanta, Georgia, March 21–24, 1996.  相似文献   

17.
BackgroundFive to 10% of women with newly diagnosed breast cancer have synchronous metastases (de novo stage IV). A further 20% will develop metastases during follow-up (recurring stage IV). We compared the clinical outcomes of women with HER2-positive metastatic breast cancer (MBC) receiving first-line trastuzumab-based therapy according to type of metastatic presentation.Patients and methodsRetrospective analysis of 331 MBC patients receiving first-line trastuzumab-based treatment. Response rates (RR) were compared by the chi-square test. Time-to progression (TTP) and overall survival (OS) curves were compared by the log-rank test. Cox-proportional hazards models were used to study predictors of PFS and OS, including the type of metastatic presentation.ResultsSeventy-seven patients (23%) had de novo stage IV disease. Forty-six of these patients underwent surgery of the primary (“de novo/surgery”). Response rates to first-line trastuzumab-based therapy and median progression-free survival did not differ in patients with “recurring”, “de novo/surgery” and “de novo” without surgery (“de novo/no surgery) stage IV breast cancer. However, women with “de novo/surgery” stage IV breast cancer had the longest median OS (60 months), and those with “de novo/no surgery” stage IV breast cancer the shortest (26 months). For women with recurring metastatic breast cancer median OS was 40 months (overall log-rank test, p < 0.01). Multivariate analysis confirmed these findings.ConclusionOur analysis shows that response rates and PFS to first-line trastuzumab-based therapy do not differ significantly between de novo and recurring stage IV, HER2 positive breast cancer. The observed difference in OS favoring women with de novo stage IV disease submitted to surgery of the primary tumor could be the result of a selection bias.  相似文献   

18.
ContextRenal cell carcinoma (RCC) represents a worldwide epidemiologic burden. Patients with metastatic disease usually have poor prognosis, and traditional treatments are often ineffective.ObjectiveThis review describes the epidemiology and pathogenesis of metastatic RCC (mRCC) and highlights the unmet clinical need for effective, targeted treatments.Evidence acquisitionMedical literature was retrieved from PubMed during January 2009. Additional relevant articles were included from the bibliographies of retrieved literature.Evidence synthesisThere were approximately 200 000 new kidney cancer cases worldwide in 2002, and the disease's incidence is increasing in the United States and parts of Europe. The occurrence of RCC can be either sporadic or familial, and risk factors include smoking, obesity, and hypertension. RCC can be asymptomatic, and 25–30% of patients will present with metastatic disease at the time of diagnosis. Patients with mRCC usually have a poor prognosis, and estimates for their 5-yr survival range between 0% and 20%. Traditional therapies—namely, cytokines or chemotherapy—have limited efficacy in the majority of patients. Recently, the emergence of novel targeted therapies has provided new treatment options with increased efficacy. Clinical trials with these agents have highlighted a need to accurately assess activity and efficacy end points such as progression-free survival, which may be a useful surrogate for overall survival.ConclusionsDespite substantial progress in our understanding and treatment of mRCC in recent years, its incidence is increasing, and the disease is still considered incurable. The increasing accuracy of diagnosis and prognosis and the development of novel targeted agents are vital for the effective management of mRCC.  相似文献   

19.
Introduction and importanceBrain and thyroid metastasis from rectal cancer are uncommon, and the prognosis is poor. We report a patient with rectal cancer who developed metachronous lung, brain and thyroid metastases. Each metastatic lesion was curatively resected resulting in prolonged survival.Case presentationA 60-year-old male underwent rectal cancer resection, and the pathological diagnosis was tubular adenocarcinoma, pT2,pN1a,M0, pStageⅢa. Ten years after rectal resection, a solitary tumor in the left lung was detected. The tumor was resected thoracoscopically and the pathological diagnosis was metastatic tumor. Three years after the pulmonary resection, a solitary brain tumor was detected. The tumor was removed surgically, and the pathology was metastatic tumor. Two years after brain resection, a thyroid mass was detected. A partial thyroidectomy was performed and the pathology with immunohistochemical staining confirmed the thyroid lesion as a metastasis from the previous rectal cancer. Four years after thyroid resection (19 years after the initial rectal resection), he died from multiple lung and bone metastases.Clinical discussionColorectal metastases to the brain and thyroid gland are uncommon and are usually found with other distant metastases. Overall survival has been reported to be extremely poor. In this patient, lung, brain, and thyroid metastases were solitary and metachronous, and each lesion was curatively resected. Surgical treatment might contribute to prolonged survival.ConclusionThe treatment strategy of each patient should be individualized and depends on the timing of metastasis development. Selected patients with complete resection of metachronous metastases may have prolonged survival.  相似文献   

20.
BackgroundThere is a strong association between hospital volume and surgical outcomes in resectable colorectal cancer. The purpose of our study was to investigate the association between hospital facility type and survival of patients with metastatic colorectal cancer.MethodsAdults from the National Cancer Database (2010–2015) with a primary diagnosis of colorectal metastases were included and stratified by facility type: community cancer program, comprehensive community cancer program, and academic/research program. The primary outcome was 5-year overall survival, analyzed using Kaplan-Meier survival curves, log-rank test, and the Cox proportional hazards regression model.ResultsAmong the 52,958 included patients, 13.72% were treated at a community cancer program, 49.89% at a comprehensive community cancer program, and 36.29% at an academic/research program. A significant increase in the proportion of patients being treated in an academic/research program has been observed from 2010 to 2015. An academic/research program tended to use more chemotherapy with colorectal radical resection and liver or lung resection and immunotherapy with chemotherapy. In adjusted analysis, the academic/research program had decreased risk of mortality in comparison to the community cancer program and the comprehensive community cancer program (hazard ratio 0.90, 95% confidence interval 0.86–0.94; 0.87, 0.85–0.90; each P < .001; respectively). Similar results were seen after stratifying by metastatic site and treatment type.ConclusionThe prognosis and overall survival of patients with metastatic disease is better in an academic/research program compared with a community cancer program or a comprehensive community cancer program, with this difference persisting across sites of metastatic disease and treatment types. Further studies are required to validate these results and investigate disparities in the management of metastatic colorectal cancer.  相似文献   

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