Presentation
Known for ankylosing spondylitis (no report available), presented with a lower abdominal discomfort. had surgery for appendiceal peritonitis 15 years ago.
Patient Data
A large pelvic peritoneal cystic structure surrounding the left ovary of low signal on T1, high signal on T2 with no restricted diffusion. Mild peripheral enhancement seen on post-contrast sequences.
Bilateral sacroiliitis with involvement of both hip joints.
Case Discussion
MRI features most consistent with a peritoneal inclusion cyst in a patient with a history of surgery for appendiceal peritonitis 15 years ago.
Peritoneal inclusion cyst is defined as a cyst-like structure that appears in relation to the peritoneal surfaces, caused by the accumulation of ovarian fluid that is contained by a peritoneal adhesion. It occurs almost exclusively in premenopausal women with a history of previous abdominal or pelvic surgery, trauma, pelvic inflammatory disease, or endometriosis.
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