Primary Pseudocystic Hepatic Neuroendocrine Tumor: A Case Report and a Case for Changing Preoperative Evaluation

Introduction: Neuroendocrine tumors(NET) represent rare neoplasms with majority primary NETs being gastroenteropancreatic or bronchopulmonary origin. A hepatic NET is most likely a metastastic lesion. Cystic lesions are commonly either infectious, benign cystic lesions, if malignant; cystadenocarcinoma, hepatocellular carcinoma, metastasis degeneration. Primary neuroendocrine tumors(PHNETs) and pseudocystic exceedingly rare. Standard tumor markers, AFP CEA, almost invariably normal. Pre-operative markers for solitary liver masses may prove beneficial. Methods: We present case of 57-year old healthy female finding large multi-lobulated right lesion, diagnosed histopathologically as tumor. Case Presentation (Results): had mass on ultrasound. An abdominal MRI showed large, cystic, multi-lobulated, lesion internal septations. The grossly appeared to biliary cystadenoma. Histopathologically, staining was positive consistent origin, diagnostic Discussion: have rare, but increasing incidence. When identified, the diagnosis usually represents metastasis. PHNET extremely PHNETs difficult diagnose pre-operatively. Tumor AFP, Ca 19-9 uniformly As there has been trend toward incidence NETs, this suggests an in cases. Here, we female. Our supports consideration obtaining pre-operative CgA all lesions.