Fig. 3

Second operation. a CT detected a liver metastasis as a recurrence of NET. b Intraoperative findings showed another metastasis. c Pathological findings showed four tumors in the resected specimen. The dotted circles represent the metastases newly detected by CE-IOUS or pathological findings. The arrow points the metastasis detected before operation. d Histopathological findings were almost the same as the specimen from the last operation