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Micropapillary pattern in serous borderline ovarian tumors: does it matter?
Jeong-Yeol Park1, Dae-Yeon Kim, Jong-Hyeok Kim
1Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea.
Gynecologic Oncology
|September 16, 2011
Summary
The micropapillary pattern in serous borderline ovarian tumors (SBOT) is linked to higher rates of advanced stage, microinvasion, and lymph node involvement. However, this pattern itself did not significantly impact disease-free survival, with peritoneal implants being the primary predictor of recurrence.
Area of Science:
- Gynecologic Oncology
- Pathology
- Surgical Oncology
Background:
- Serous borderline ovarian tumors (SBOT) represent a distinct group of ovarian neoplasms.
- The micropapillary pattern is a less common histological subtype of SBOT.
- Understanding the clinical significance of the micropapillary pattern in SBOT is crucial for patient management.
Purpose of the Study:
- To investigate the clinical and prognostic implications of the micropapillary pattern in patients diagnosed with serous borderline ovarian tumors.
- To compare clinicopathologic features and patient outcomes between typical and micropapillary SBOT.
Main Methods:
- Retrospective analysis of 130 patients with SBOT, categorized into typical (n=97) and micropapillary (n=33) patterns.
- Comparison of clinicopathologic factors including age, tumor characteristics, surgical procedures, and staging between the two groups.
- Evaluation of recurrence rates, disease-free survival (DFS), and mortality based on histological pattern.
Main Results:
- Micropapillary SBOT showed significantly higher incidences of advanced stage (II-III), microinvasion, peritoneal implants, and lymph node involvement compared to typical SBOT.
- No significant differences were observed in recurrence rates (5.2% vs 9.1%) or 5-year DFS (96% vs 86%) between the groups.
- Peritoneal implant, particularly invasive implants, was identified as the sole independent factor associated with tumor recurrence in multivariate analysis.
Conclusions:
- Complete staging procedures, including lymph node dissection, are recommended for micropapillary SBOT due to its association with advanced stage and lymph node involvement.
- Despite associations with adverse pathological findings, the micropapillary SBOT pattern itself was not a significant independent predictor of disease-free survival.
- Peritoneal implants are the critical determinant of tumor recurrence in SBOT, irrespective of the histological pattern.
