Multicystic mesothelioma

A multicystic mesothelioma is a rare benign sub type of  mesothelioma.

They tend to occur in young females. 

Typically comprises of multiple grape-like clusters of cysts which are lined with mesothelium and separated by fibrous tissue components.

Risk factors
  • previous abdominal surgery
  • previous pelvic inflammatory disease
  • no recognised association with asbestos exposure 5
Location

Primarily occurs in the pelvic peritoneum 2.

Ultrasound

May appear as a multicystic pelvic mass 2-3.

CT
  • typically seen as a well-defined low attenuating (cystic) pelvic mass.
  • calcification is generally not a feature 
MRI

Can better delineate the pelvic cystic mass. Reported signal characteristics include:

  • T1: fluid components show low signal 
  • T2: fluid components show high signal
  • C+ (Gd): may show enhancement of septa

Surgery is the preferred option for localised lesions. The tumour tends to recur locally (25-50% of cases) 3,6. Not thought to be chemo or radio-sensitive 2. May respond to hormonal therapy 5.

The general differential includes:

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Article Information

rID: 9143
System: Urogenital
Synonyms or Alternate Spellings:
  • Multicystic mesothelioma

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