Low-grade appendiceal mucinous neoplasm (LAMN) as a mimicker of perforated diverticulitis: a case report.

J Surg Case Rep

Department of General Surgery, The Canberra Hospital, Yamba Drive, Garran, ACT 2605, Australia.

Published: February 2022

The differential diagnosis of abdominal pain is wide as both benign and malignant pathologies must be considered. There are currently no published case reports of low-grade appendiceal mucinous neoplasms (LAMNs) mimicking perforated diverticulitis. LAMNs are a heterogenous group of tumours, with no consensus treatment algorithm based on stage and histology. In this case report, we discuss a patient who presented emergently with generalized peritonism, with a diagnosis of perforated diverticulitis made on computed tomography scan. At laparotomy, a perforated appendix was identified, with histopathology identifying a perforated LAMN. This case highlights the importance of considering this rare but increasing incidence tumour when operative management is being planned.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8840871PMC
http://dx.doi.org/10.1093/jscr/rjac014DOI Listing

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