Intra-abdominal Desmoid Tumor Mimicking Pancreatic Neuroendocrine Tumor Recurrence—A Case Report—

Abstract

Intra-abdominaldesmoidtumorsmaybeindistinguishablefromrecurrentcancer,followingintra-abdominalsurgery.A47-year-oldmanunderwentdistalpancreatectomyforapancreaticneuroendocrine tumor.Follow-upcomputedtomographyandmagneticresonanceimagingrevealedarecurrentneuroendocrinetumorintheleftsubphrenicarea.Somatostatinreceptorscintigraphyrevealedpaletraceruptake. Weperformedtumorresection2yearsafterthepreviousoperation;intraoperatively,wedetectedanisolatedhardelastictumor(30mm)withasolidwhitishcutsurface.Histopathologicalevaluationoftheresectedspecimenshowedanintra-abdominaldesmoidtumororiginatingfromtheretroperitoneum.Nore-currencewasobservedat1-yearpostoperativefollow-up.Wereportararecaseofanintra-abdominal desmoidtumorthatmimickedarecurrentpancreaticneuroendocrinetumor.Desmoidtumorsareoften indistinguishable from recurrent cancer in patients with a history of surgery for intra-abdominal malignancies;however,cliniciansshouldconsiderdesmoidtumorsinthedifferentialdiagnosisinsuchcases.