Peritoneal inclusion cysts: Clinical characteristics and imaging features Journal Article


Authors: Veldhuis, W. B.; Akin, O.; Goldman, D.; Mironov, S.; Mironov, O.; Soslow, R. A.; Barakat, R. R.; Hricak, H.
Article Title: Peritoneal inclusion cysts: Clinical characteristics and imaging features
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 © 2012 European Society of Radiology.
Keywords: adult; aged; major clinical study; clinical feature; nuclear magnetic resonance imaging; magnetic resonance imaging; preoperative evaluation; demography; computer assisted tomography; medical record review; ultrasound; computed tomography; demographics; peritoneal inclusion cyst; retroperitoneal cyst
Journal Title: European Radiology
Volume: 23
Issue: 4
ISSN: 0938-7994
Publisher: Springer  
Date Published: 2013-04-01
Start Page: 1167
End Page: 1174
Language: English
DOI: 10.1007/s00330-012-2695-8
PROVIDER: scopus
PUBMED: 23263602
DOI/URL:
Notes: --- - "Export Date: 1 July 2013" - "CODEN: EURAE" - "Source: Scopus"
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MSK Authors
  1. Richard R Barakat
    629 Barakat
  2. Svetlana Mironov
    37 Mironov
  3. Robert Soslow
    715 Soslow
  4. Hedvig Hricak
    370 Hricak
  5. Oguz Akin
    212 Akin
  6. Debra Alyssa Goldman
    115 Goldman