Intra-Abdominal Hypertension-Induced Gastroesophageal Intussusception: A Rare Complication of Transurethral Resection of a Bladder Tumor

BACKGROUND Gastroesophageal intussusception (GEI) generally develops in patients with risk factors. However, intra-abdominal hypertension (IAH) rarely causes sudden GEI in patients without known risk factors. Endoscopic or surgical intervention is generally performed to reduce GEI. However, when GEI is induced by IAH, intra-abdominal pressure (IAP) decompression can contribute to GEI reduction. CASE REPORT An 81-year-old man who underwent transurethral resection of bladder tumor (TURBT) for hematuria from a bladder tumor located at the left lateral wall had a deteriorated general status and bladder perforation during surgery in February 2020. The perforated portion was coagulated and treated conservatively using a urinary tract catheter. He was admitted to our Intensive Care Unit (ICU) following surgery after undergoing computed tomography (CT). CT revealed free air, ascites, and intra/retroperitoneal edema due to perfusion fluid leakage, and a new GEI was documented. The GEI required reduction; however, since his IAP increased to 21 mmHg, IAH-induced GEI was diagnosed; ascites drainage for IAP decompression was performed. IAP decreased to 12 mmHg after drainage; on subsequent gastrointestinal endoscopy, the GEI had reduced. His condition improved with no recurrence of GEI, and he was discharged from the ICU on day 8. Since cystography findings on day 26 showed no leakage of the bladder, he was discharged from our hospital on day 31. CONCLUSIONS We report a case of IAH-induced GEI as a complication of perfusion fluid leakage during TURBT. GEI was reduced by IAP decompression by ascites drainage without endoscopic or surgical intervention.