[A Case of a Two-Stage Robotic-Assisted Surgery for a Neuroendocrine Tumor of the Pancreatic Tail with Simultaneous...

As medical insurance coverage for robotic surgery has been expanded in the field of gastrointestinal surgery in Japan, the number of cases undergoing robotic surgery for hepato-biliary-pancreatic disease has been increasing. Therefore, cases with malignant tumors and metastatic lesions tend to undergo robotic operation for both primary tumors and metastases. Herein, we report a case of neuroendocrine tumor(NET)in the pancreatic tail with simultaneous single liver metastasis, which was treated with two-stage robotic-assisted surgery. A 67-year-old female underwent a computed tomography scan and a hypovascularized tumor in the pancreatic tail region and liver was found. A biopsy of the pancreatic tumor by endoscopic ultrasound-guided fine needle aspiration demonstrated a NET G1-2. The liver lesion was diagnosed as a metastatic tumor, considering the other examinations. The patient underwent a robotic distal pancreatectomy(RDP)and was histopathologically diagnosed as NET G2. Sixty-three days after the RDP, a two-stage partial liver resection for the metastatic tumor was performed under robotic assistance. Curative resection was achieved through two-stage robot-assisted surgery, there were no postoperative complications.