In a colon cancer screening program, a 52-year-old patient undergoes a colonoscopy. The entire colon is normal except for the finding of a 2 cm pedunculated polyp in the sigma which is removed with a diathermy loop. The anatomopathological result indicates that there is a carcinoma in situ limited to the head of the polyp. She has a thoracoabdominal CT scan reported as normal. Indicate the correct course of action.
Carcinoma in situ is delimited by the basement membrane, i.e. it is not invasive yet, and therefore the treatment is polypectomy, which is already done. Subsequently, an endoscopic follow-up (with biopsies) should be performed at an interval of 3 to 6 months depending on the patient's history, age and concomitant pathologies.
Segmental resection of the affected colon.
Periodic endoscopic surveillance.
Local resection of the base of the polyp.
Sigmoidectomy plus lymphadenectomy.
an endoscopic follow-up (with biopsies) should be performed at an interval of 3 to 6 months depending on the patient's history, age and concomitant pathologies.