Carcinoid tumor presenting as a primary mesenteric mass: a case report and review of the literature.
We report a case of a primary carcinoid tumor arising in the mesentery of the small bowel of a 52-year-old man. The mesenteric mass in this patient was first identified as an incidental finding on CT imaging for bilateral nephrolithiasis. As a result of the abnormal findings, follow-up evaluation identified a partially calcified lobulated mesenteric lymph node. Diagnostic laparoscopy with lymph node sampling showed no evidence of hepatic or other metastatic disease. Pathologic analysis and immunohistochemistry of the mesenteric tissue revealed a malignant neuroendocrine tumor. Since all radiographic studies and subsequent workup revealed no evidence of other primary masses, this was determined to be a primary carcinoid tumor arising in the mesentery of the small bowel. Primary mesenteric carcinoid tumors are very rare because of their location of origin.
Yamanuha
Justin
J
John A. Burns School of Medicine, University of Hawai'i, Honolulu, HI 96813, USA.
Ballinger
Ray
R
Coon
David
D
Navin
James
J
D002276:Carcinoid Tumor / Q000175:diagnosis / Q000473:pathology*; D006801:Humans; D008113:Liver Neoplasms / Q000556:secondary*; D008297:Male; D008643:Mesentery / Q000473:pathology*; D008875:Middle Aged; D010534:Peritoneal Neoplasms / Q000175:diagnosis / Q000473:pathology*