Stage 0 rectal cancer is the most superficial of all rectal lesions and is limited to the mucosa without invasion of the lamina propria. Because of its superficial nature, surgical and other procedures may be limited.
Standard treatment options:
Local excision or simple polypectomy.
Full-thickness rectal resection by the transanal or transcoccygeal route for large lesions not amenable to local excision.
Endocavitary radiation therapy.[2,3,4]
Local radiation therapy.