Predicting pelvic lymph node metastasis in endometrial carcinoma.

Area of Science:

• Gynecologic Oncology
• Surgical Oncology
• Pathology

Background:

• Endometrial cancer management often includes pelvic lymph node dissection (PLND).
• Individualizing PLND based on patient-specific risk factors is crucial for optimizing treatment and reducing morbidity.
• The relationship between clinicopathological factors and pelvic lymph node (PLN) metastasis requires further elucidation.

Purpose of the Study:

• To investigate the correlation between prognostic factors and PLN metastasis in endometrial cancer.
• To determine if microscopic degree of myometrial invasion (DMI) and tumor diameter (TD) can predict PLN metastasis.
• To assess the feasibility of individualizing pelvic lymph node dissection in endometrial cancer patients.

Main Methods:

• Retrospective analysis of 175 endometrial carcinoma patients treated between 1979 and 1994.
• Patients underwent hysterectomy with pelvic lymph node dissection.
• Prognostic factors analyzed included clinical stage, age, histological grade, DMI, cervical invasion, adnexal metastasis, and TD.

Main Results:

• Pelvic lymph node metastasis was identified in 14% (24/175) of patients.
• Tumor diameter (TD) was significantly larger in patients with PLN metastasis.
• Logistic regression identified DMI and TD as independent predictors of PLN metastasis, enabling probability estimation via a derived formula.

Conclusions:

• Microscopic degree of myometrial invasion (DMI) and tumor diameter (TD) are reliable indicators for estimating PLN metastasis status in endometrial cancer.
• These factors can aid in personalizing the extent of pelvic lymph node dissection.
• Further research can refine predictive models for surgical decision-making.