Abstract
A 35-year-old woman visited our hospital because of a submucosal tumor in the gastric cardia that was detected by an upper gastrointestinal series and a gastrointestinal endoscopy performed during a medical checkup. An abdominal enhanced CT scan revealed a small, slightly enhanced tumor. The tumor's feeding artery was diverted from the hepatic artery. An abdominal US revealed an isoechoic ovoid mass between the liver and stomach. A MRI scan revealed an isointense mass on T2-weighted images. Based on the gastrointestinal endoscopy and radiological examinations, the lesion was diagnosed as a GIST ; however, a possibility of hepatoma could not be ruled out because of the feeding artery. Laparoscopic wedge resection for the GIST of the gastric cardia was planned. A solitary mass arising from the left triangular ligament of the liver was found during a laparoscopic examination. Laparoscopic partial hepatectomy, including the hepatic tumor, was performed using ultrasonic laparoscopic coagulation shears. The pathological diagnosis was hepatic focal nodular hyperplasia (FNH). Although a correct diagnosis was not made preoperatively, a laparoscopy was very useful for the diagnosis and treatment in the present case. No cases of a FNH originating from the left triangular ligament of the liver have been previously reported.
