[Splenic Sarcoidosis with Concurrent Gastric Cancer Diagnosed by Robot-Assisted Surgery-A Case Report].

An 83-year-old woman was referred for the surgical treatment of early gastric cancer. FDG-PET/CT showed multiple space-occupying lesions in the spleen with abnormal FDG accumulation. Robot-assisted distal gastrectomy(D1+), Billroth Ⅱ reconstruction, and robot-assisted splenectomy were simultaneously performed for the diagnosis of splenic tumors without any intraoperative complications. Histopathological examination revealed early gastric cancer[M, Less, por+sig>tub2, 27×15 mm, pT1a, N0, M0, pStage ⅠA], and based on the findings of non-caseating granulomas, the multiple splenic tumors were diagnosed as splenic sarcoidosis. Histopathological diagnosis is necessary for the definitive diagnosis of splenic tumors. Although laparoscopic splenectomies have become increasingly common, the safety of robot-assisted splenectomies remains controversial. In the present case, robot-assisted splenectomy was performed safely during the simultaneous resection of gastric cancer, and a histological diagnosis was possible. However, further evidence on the usefulness of robot-assisted splenectomy is required.