A Rare Cause of Abdominal Pain and Mass in an 18-Year-Old Patient: A Diagnostic Dilemma

Hassan Tariq, Muhammad Umar Kamal, Vamshidhar Vootla, Mohamed ElZaeedi, Masooma Niazi, Brian Gilchrist, Ariyo Ihimoyan, Anil Dev, Sridhar Chilimuri

Abstract


We present a case of an 18-year-old male who presented with complains of abdominal pain, nausea and vomiting for 2 years. An esophagogastroduodenoscopy (EGD) revealed a 3 mm nodule on the lesser curvature of the stomach and prominent gastric folds. Biopsy of the nodule revealed a well-differentiated neuroendocrine tumor (NET) in lamina prop with focal extension into muscularis mucosa consistent with a gastric carcinoid. Tumor cells stained with neuron-specific enolase (NSE), chromogranin and synaptophysin only. The prominent gastric fold biopsy revealed gastric fundic mucosa with mucosal edema and focal mild chronic inflammation. Serum gastrin level was found to be 2,083 pg/mL. Abdomen CT and endoscopic ultrasound (EUS) revealed a mass near the pancreatic neck. These findings were consistent with a functional gastrin producing well-differentiated grade 1 neuroendocrine neoplasm (gastrinoma). The patient underwent exploratory laparotomy with resection of the mass and resulting in normalization of gastrin levels.




Gastroenterol Res. 2018;11(1):75-78
doi: https://doi.org/10.14740/gr955w


Keywords


Gastrinoma; Gastric carcinoids; Neuroendocrine tumor; Zollinger-Ellison syndrome; Primary peripancreatic gastrinoma

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