Mesenteric Lymph Node Involvement as a Prognostic Factor in Ovarian Cancer: A Study Using a Standardized Detection...

Area of Science:

• Oncology
• Surgical Oncology
• Gynecologic Oncology

Background:

• Mesenteric lymph node (MLN) involvement is common in ovarian cancer (OC) with rectosigmoid invasion.
• Current MLN detection methods lack standardization, leading to controversial clinical significance.
• This study addresses the need for a standardized approach to evaluate MLN involvement in OC.

Purpose of the Study:

• To investigate the clinical significance of MLN involvement in ovarian cancer (OC) patients.
• To establish a standardized method for MLN detection and histopathologic examination.
• To correlate MLN status with patient prognosis following cytoreductive surgery.

Main Methods:

• A cohort of 171 patients with stage II-IV OC undergoing cytoreductive surgery was analyzed.
• For patients with rectosigmoid resection, systematic regional lymph node dissection and MLN examination were performed, mirroring colorectal cancer protocols.
• Histopathologic examination was used to confirm MLN involvement.

Main Results:

• MLNs were detected in 98.2% of patients undergoing rectosigmoid resection (n=57), with a median of nine nodes examined.
• MLN involvement was confirmed in 30 of these patients.
• MLN involvement independently predicted progression-free survival (P=0.010) and was significantly associated with worse prognosis in patients who underwent complete cytoreductive surgery (P<0.001).

Conclusions:

• MLN involvement is a crucial prognostic factor in ovarian cancer (OC), particularly after complete cytoreductive surgery.
• Standardized MLN evaluation, similar to colorectal cancer protocols, can identify OC patients at higher risk of poor prognosis.
• This standardized approach enhances risk stratification and may guide treatment decisions.