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#3329 The role of 68Ga-DOTATATE PET/CT in extensive IgG4-positive fibrosis surrounding a mesenteric lymph node metastasis of a neuroendocrine tumor: A case report

Introduction: IgG4 expression is commonly seen in mesenteric tumor deposits from small intestine neuroendocrine tumors leading to a dense fibrotic response which can simulate IgG4-related sclerosing mesenteritis in medical images, hereby impeding a correct diagnosis.

Conference: 18th Annual ENETS Concerence (2021)

Presenting Author:

Authors: Ahmadi Bidakhvidi N, Cuyle P, Sagaert X, Ballaux F, De Bruecker Y,

Keywords: small intestine neuroendocrine tumor, 68Ga-DOTATATE PET/CT, mesenterial lymph node, fibrosis, IgG4,