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Transvaginal sonographic appearance of peritoneal pseudocysts
1Department of Obstetrics and Gynecology, University of Bologna, Bologna, Italy. lucasavelli@rocketmail.com
Summary
Transvaginal sonography can distinguish peritoneal pseudocysts (PPCs) from ovarian cysts by identifying characteristic features like undefined margins and specific shapes. These sonographic findings aid in accurate differential diagnosis before surgery.
Area of Science:
- Gynecologic imaging
- Abdominal imaging
- Diagnostic ultrasound
Background:
- Peritoneal pseudocysts (PPCs) can mimic ovarian cysts sonographically.
- Accurate differentiation is crucial for appropriate patient management.
Purpose of the Study:
- To detail the sonographic characteristics of PPCs.
- To identify features that differentiate PPCs from true ovarian cysts.
Main Methods:
- Transvaginal sonography was performed on 31 women with PPCs before surgery.
- Sonographic parameters analyzed included cyst shape, margins, content, location, septa, and echogenic portions.
Main Results:
- Most PPCs (81%) had blurred margins and bizarre shapes (tubular, star-like, lumpy).
- The ipsilateral ovary was visualized adjacent to or within the pseudocyst in 84% of cases.
- Septa were present in 81% of cases, sometimes appearing mobile ('flapping sail').
Conclusions:
- PPCs exhibit distinct sonographic features that aid in differentiating them from ovarian cysts.
- Characteristic findings include undefined margins, irregular morphology, and specific ovarian positioning.
- Sonography enables correct differential diagnosis of PPCs in most cases.