Lymphadenectomy for high-grade endometrial cancer: Does it impact lymph node recurrence?

INTRODUCTION

The diagnostic role of lymph node (LN) assessment is established in endometrial cancer. Our study assesses whether surgical removal of metastatic LNs has oncologic benefit in high-grade endometrial cancer.

MATERIALS AND METHODS

High-grade endometrial cancer cases (2000-2010) were collected from two tertiary cancer centres. In patients with at least one positive LN, recurrence free survival (RFS) was compared by the number of LNs removed. Factors predicting nodal recurrence (NR) were explored. Univariate statistical analyses by log rank test and multivariable cox proportional hazards model were performed using SAS version 9.4.

RESULTS

Of 570 patients identified, 334 patients underwent staging lymphadenectomy, 74 (22.2%) patients had at least one positive LN. The median RFS with at least one positive lymph node was 87.1 months (95% CI ≥ 14.3) when greater than 15 LNs were removed, compared to 16.9 months (95% CI, 13.6-35.6) and 17.3 months (95% CI, 8.5-39.8) when 5-15 and less than 5 LNs were removed, respectively (p = 0.02). In the cohort of 570 patients, there were 167 disease recurrences with location described on imaging, 98 (58.7%) had a NR and 69 (41.3%) recurred at other sites. Multivariable modeling identified that only positive LNs at surgical staging predicted NR (HR 3.8, 95% CI 1.4-10.2).

CONCLUSION

In high-grade endometrial cancer, positive LNs predict NR, and RFS is longer with a more extensive LN dissection in women with positive LNs. Future prospective studies should evaluate the oncologic benefit of surgical removal of metastatic LNs in high-grade endometrial cancer.

Lymph node assessment in cervical cancer: prognostic and therapeutic implications

Lymph node status is not part of the staging system for cervical cancer, but provides important information for prognosis and treatment. This article reviews the incidence and patterns of lymph node metastasis, and the issues surrounding surgical assessment of lymph nodes. The preoperative assessment of lymph nodes by imaging, as well as the intraoperative assessment by sentinel nodes will be discussed. Finally, the prognostic and therapeutic implications of lymphadenectomy in cervical cancer will be reviewed.

Land and sea connection: the east coast fishery closure, unemployment and health

The closure of the east coast fishery in Canada in 1992 has affected the lives of individuals and communities both directly and indirectly, causing massive unemployment. Previous research indicates that unemployment negatively affects people's health and other aspects of family functioning. This study assesses the perceived effects of unemployment on the individuals' health, and compares the psychological well-being of the employed and that of the unemployed individuals in the same communities affected by the cod moratorium. The sample consisted of 681 individuals, 16 years of age and older from randomly selected households. They were individually interviewed using structured questionnaires. The GHQ-28 with a high test-retest coefficient (0.90) and split-half reliability (0.92) was used to measure the psychological well-being. The unemployed reported more stress, boredom, high level of uncertainty, less satisfaction with themselves, their life, their educational level, income and health. Implications for health promotion, policy formulation and future research are put forward.

Land and sea connection: the east coast fishery closure, unemployment and health

The closure of the east coast fishery in Canada in 1992 has affected the lives of individuals and communities both directly and indirectly, causing massive unemployment. Previous research indicates that unemployment negatively affects people's health and other aspects of family functioning. This study assesses the perceived effects of unemployment on the individuals' health, and compares the psychological well-being of the employed and that of the unemployed individuals in the same communities affected by the cod moratorium. The sample consisted of 681 individuals, 16 years of age and older from randomly selected households. They were individually interviewed using structured questionnaires. The GHQ-28 with a high test-retest coefficient (0.90) and split-half reliability (0.92) was used to measure the psychological well-being. The unemployed reported more stress, boredom, high level of uncertainty, less satisfaction with themselves, their life, their educational level, income and health. Implications for health promotion, policy formulation and future research are put forward.

An evaluation of the expression, subcellular localization, and function of rab4 in the exocrine pancreas

The small GTP-binding protein, rab4, is involved in recycling of transferrin receptors and translocation of GLUT4. Recent studies suggest that rab4 controls regulated exocytosis in the exocrine pancreas. We conducted the present study to further investigate the role of rab4 in the exocrine pancreas. We found that the exocrine pancreas expresses two rab4 immunoanalogs, one of approximately 28 kDa identified previously in neonatal glands, and one of approximately 24 kDa which is similar to rab4 characterized in other systems. The latter species was mostly membrane-anchored and localized to endosome-like structures in a supranuclear region that was immunopositive for the transferrin receptor. The approximately 24-kDa rab4 form also localized to the apical plasmamembrane, and this immunofluorescence increased greatly in tissue challenged with a secretagogue. We propose that the approximately 24-kDa rab4 species is involved in compensatory membrane retrieval following regulated exocytosis, and that rab4-positive endocytic vesicles move through a supranuclear recycling compartment.