Histologic confirmation of huge pancreatic lipoma: a case report and review of literatures.

Pancreatic lipomas are commonly diagnosed based on radiologic images, although the prevalence of lipomas has not been established. Histologic confirmation of pancreatic lipomas is extremely rare because surgical treatment is unnecessary in most cases. Endoscopic ultrasound-guided fine-needle aspiration cytology has been suggested to avoid unnecessary surgery to distinguish between a lipoma and a well-differentiated liposarcoma; however, surgery would be needed when the tumor is associated with symptoms or difficult to distinguish from a liposarcoma. We present a case of a pancreatic lipoma in a 54-year-old male patient that was histologically-confirmed by subtotal pancreatectomy.