A Case of Pancreatic Lipoma With Morphological Change During Long-Term Follow-up
Although the great majority of both benign and malignant pancreatic neoplasms arise from pancreatic epithelial cells, mesenchymal tumors, while rare, can derive from the connective, lymphatic, vascular, and neuronal tissues of the pancreas. Mesenchymal tumors account for 1% to 2% of all pancreatic tumors and are classified according to their histologic origin.1 Various mesenchymal tumors including lipoma, teratoma, schwannoma, neurofibloma, lymphoma, and sarcoma have been reported. Pancreas is an uncommon location for lipomas. These tumors are usually detected as incidental findings on imaging modalities. Pancreatic lipomas are reported as rare benign mesenchymal neoplasms that are stable in size and morphology.2 Here we report a case of pancreatic lipoma, which was detected on ultrasound imaging and its morphological change observed during a long-term follow-up.