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Collagenous bodies in endometriotic cysts
Manikkapurath Hemachandran1, Raje Nijhawan, Radhika Srinivasan
1Department of Cytology and Gynaec Pathology, Postgraduate Institute of Medical Education and Research, Chandigarh 160012, India.
Diagnostic Cytopathology
|October 7, 2004
Summary
Researchers identified unique "collagenous bodies" in pelvic endometriotic cysts. These PAS-positive structures, originating from the basement membrane, may be characteristic diagnostic markers for endometriosis.
Area of Science:
- Gynecology
- Pathology
- Cytopathology
Background:
- Pelvic endometriotic cysts are a common gynecological condition.
- Accurate cytomorphological diagnosis can be challenging.
- Endometrial glands and stroma are not always identifiable in aspiration smears.
Purpose of the Study:
- To investigate characteristic cytomorphological features in pelvic endometriotic cysts.
- To identify potential diagnostic markers for endometriosis in aspiration smears.
Main Methods:
- Retrospective analysis of 15 cases diagnosed with pelvic endometriotic cysts.
- Evaluation of clinical, radiological, and cytomorphological features.
- Periodic acid Schiff (PAS) staining and immunostaining for type IV collagen were performed.
Main Results:
- Endometrial glands/stroma were present in only 3 of 15 cases.
- Oval/petal-shaped structures (40-70 micro) were observed in 12 cases.
- These structures stained positive with PAS and type IV collagen, indicating basement membrane origin.
Conclusions:
- The presence of "collagenous bodies" may be characteristic of endometriotic cysts.
- These findings suggest a potential new diagnostic marker for endometriosis.
- Further prospective studies with larger cohorts are needed for confirmation.