PT - JOURNAL ARTICLE AU - TSUTOMU NAMIKAWA AU - MASAHIRO MAEDA AU - KEIICHRO YOKOTA AU - NOBUHISA TANIOKA AU - JUN IWABU AU - MASAYA MUNEKAGE AU - SUNAO UEMURA AU - HIROMICHI MAEDA AU - HIROYUKI KITAGAWA AU - YUSUKE NAGATA AU - MICHIYA KOBAYASHI AU - KAZUHIRO HANAZAKI TI - Laparoscopic Distal Gastrectomy for Synchronous Gastric Cancer and Gastrointestinal Stromal Tumor With Situs Inversus Totalis AID - 10.21873/invivo.12331 DP - 2021 Mar 01 TA - In Vivo PG - 913--918 VI - 35 IP - 2 4099 - http://iv.iiarjournals.org/content/35/2/913.short 4100 - http://iv.iiarjournals.org/content/35/2/913.full SO - In Vivo2021 Mar 01; 35 AB - Background: Situs inversus totalis (SIT) is a rare congenital condition in which the thoracic and abdominal organs are inverted like a mirror image. Case Report: We present a case of synchronous gastric cancer and gastrointestinal stromal tumor (GIST) associated with SIT in a 74-year-old man who was admitted to our department to treat gastric cancer. Esophagogastroduodenoscopy revealed a depressed lesion and a submucosal tumor (SMT) in the middle-third of the stomach. Abdominal contrast-enhanced computed tomography revealed complete inversion of the internal organs, and the common hepatic artery branched from the superior mesenteric artery. The patient underwent laparoscopic distal gastrectomy with regional lymph node dissection and Billroth I reconstruction. The macroscopic observation of the resected specimen revealed a depressed lesion measuring 2.0×1.5 cm in diameter and an SMT measuring 2.2×1.8 cm. Conclusion: Careful preoperative anatomic evaluation is important in SIT because the situs anomalies may be accompanied by major vascular anomalies.