Intramural ectopic pancreatic tissue of the stomach: A case report of an uncommon origin of a non-cancerous gastric tumour

INTRODUCTION: Ectopic pancreatic tissue is often incidentally encountered during abdominal surgery. We report a case of an incidental finding during a laparoscopic appendectomy, the approach to diagnosis and management of this. The work has been reported in line with the SCARE criteria. PRESENTATION OF CASE: A 32 year-old woman was diagnosed with an intramural pre-pyloric mass during a laparoscopic appendectomy. The lesion was identified on a subsequent computed tomography as a homogenous mass on the greater curvature. Upper esophagho-gastro-duodenoscopy was normal. The intramural mass was confirmed by an endoscopic sonography and the fine needle biopsy showed aspecific inflammatory cells. A laparoscopic wedge resection was realized. Histopathologic examination confirmed the diagnosis of an ectopic pancreatic tissue. DISCUSSION: The management of ectopic pancreas poses a medical challenge. The diagnostic quiver consists of radiologic exams and endoscopy, in combination with a direct biopsy of the lesion. CONCLUSION: Despite the plethora of diagnostic modalities available, a definitive diagnosis for heterotopic pancreas often remains elusive, requiring more invasive diagnostic means. Although ample information is available in literature, there are currently no evidence-based guidelines regarding diagnosis and management of heterotopic pancreas.