A 65-year-old man undergoes screening colonoscopy. A 1-cm submucosal mass is seen in the mid rectum. Biopsy results show spindle cells with KIT (CD117) positivity with a low mitotic rate. Complete staging is performed without any evidence of metastatic or locally advanced tumor. What is the most appropriate management?
There's more to see -- the rest of this topic is available only to subscribers.