2020 Volume 73 Issue 2 Pages 83-88
A 60-year-old man was admitted to our clinic with a diagnosis of rectal incarceration. A soft ball-sized incarcerated hemorrhoid was palpated with an elastic soft mass. It was considered to be an incarcerated hemorrhoid with a huge hematoma. Computed tomography (CT) showed enhanced contrast, suggesting a transanal prolapse of rectal tumor. As manual reduction was impossible, transanal resection was performed under lumbar anesthesia. Histopathological examination revealed rectal GIST (intermediate risk) with positive staining for c-kit and CD34, and MIB1<1%. Without adjuvant therapy after surgery, the patient was followed up for 1 year without recurrence.