A 48-year-old man presented with nausea and vomiting. Physical examination revealed abdominal tenderness. Abdominal CT scan showed obstruction of the proximal jejunum and a mass located in the proximal jejunum. Following nasogastric decompression, elective surgery was undertaken. Intraoperatively, there was a 30 mm tumor in the jejunum, 5 cm distal to the ligament of Treitz. The tumor adhered to the mesentery of jejunum, 30 cm distal to the tumor, resulting in internal hernia. We released the adhesion and resected part of the jejunum. The clinical course was good and he was discharged from the hospital 6 days after operation. Histopathological findings revealed type I aberrant pancreas according to the Heinrich classification. Aberrant pancreas with clinical symptoms is rare, generally presenting with intussusception. We review cases of symptomatic aberrant pancreas of the small intestine reported in the literature.
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