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We present the case of a 32-year-old woman with a previous surgical history of benign mucinous cystadenoma resected in 2012 who underwent magnetic resonance cholangiopancreatography following her second pregnancy in 2020. This demonstrated a large cystic mass in the left subdiaphragmatic space. Histopathology confirmed a well-differentiated primary peritoneal mucinous cystadenocarcinoma displaying cells of a Mullerian origin. We subsequently discuss the aetiology of these conditions separately and explore the possibility of a connection between the two regarding origin or potential malignant transformation that may otherwise have occurred coincidentally in this young patient. We also acknowledge a paucity of evidence regarding subsequent management strategies.

Original publication




Journal article


BMJ Case Rep

Publication Date





cancer - see oncology, gynecological cancer, radiology, surgical oncology, Adult, Cell Transformation, Neoplastic, Cystadenocarcinoma, Cystadenocarcinoma, Mucinous, Cystadenoma, Cystadenoma, Mucinous, Female, Humans, Ovarian Neoplasms