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- Title
Peritoneal inclusion cysts: clinical characteristics and imaging features.
- Authors
Veldhuis, Wouter; Akin, Oguz; Goldman, Debra; Mironov, S.; Mironov, O.; Soslow, Robert; Barakat, Richard; Hricak, Hedvig
- Abstract
Objectives: To investigate the frequency of patient characteristics, causative factors and imaging features associated with pathology-proven peritoneal inclusion cysts (PICs). Methods: From a retrospective search of all available hospital records-dating back 19 years-we identified 228 patients with pathology-proven PICs. Descriptive statistics were calculated for patients' demographic and clinical characteristics. Imaging features of pathology-proven PICs were recorded on a total of 77 computed tomography (CT), magnetic resonance imaging (MRI) and/or ultrasound (US) studies from patients who underwent imaging before surgery. Results: PICs occurred over a wide age range (18-89 years); 82.5 % of patients were women and 17.5 % were men. A history of prior insult to the peritoneum was identified in 70.6 % of patients. Imaging appearances of PICs ranged from loculated, simple fluid collections to complex, multi-septated lesions. In the absence of haemorrhage or debris, PICs were never found to have thick walls. The presence of nodularity, papillary excrescences or other solid components also excluded a diagnosis of PIC, as did the presence of more than a physiological amount of ascites, provided the ascites had no alternate explanation. Conclusions: PICs are more common than suggested by previously published reports. Knowledge of patient characteristics and typical PIC imaging appearances may prevent unnecessary or unnecessarily aggressive therapy. Key Points: • Peritoneal inclusion cysts (PIC) occur in women and men at all ages • PICs may be incidental findings, both at imaging and during surgery • Especially in symptomatic patients, PICs may be mistaken for cystic neoplasms • Knowledge of demographics and typical imaging features may prevent unnecessarily aggressive therapy • Thick walls, solid component and ascites are inconsistent features of a PIC
- Subjects
PERITONEAL cancer; CYSTS (Pathology); MEDICAL imaging systems; MAGNETIC resonance imaging; DIAGNOSTIC imaging; TUMORS
- Publication
European Radiology, 2013, Vol 23, Issue 4, p1167
- ISSN
0938-7994
- Publication type
Article
- DOI
10.1007/s00330-012-2695-8