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Treatment Options for Stages I, II, and III Anal Cancer
Source: Anal Cancer Treatment (PDQ®)–Health Professional Version, National Cancer Institute.
Source updated: February 12, 2025 · Captured 2026-09-09.
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Context: Treatment of Stages I, II, and III Anal Cancer
Current sphincter-sparing therapies include wide local excision for small tumors of the perianal skin or anal margin, or definitive chemoradiation therapy (fluorouracil [5-FU] and mitomycin) for cancers of the anal canal. Radical resection is reserved for patients with incomplete responses or recurrent disease.
Continued surveillance with rectal examination every 3 months for the first 2 years and endoscopy with biopsy when indicated after completion of sphincter-preserving therapy is important to monitor for recurrence.
Treatment options for stage I, stage II, and stage III anal cancer include:
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Small tumors of the perianal skin or anal margin not involving the anal sphincter may be adequately treated with local resection.[1]
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The standard of care for all other stage I, II, and III anal cancers in appropriate patients is chemoradiation therapy (external-beam radiation therapy [EBRT] with chemotherapy).
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The standard of care for all other stage I, II, and III anal cancers in appropriate patients is chemoradiation therapy (external-beam radiation therapy [EBRT] with chemotherapy).
5-FU + mitomycin + radiation therapy.[2,3]
The standard of care for all other stage I, II, and III anal cancers in appropriate patients is chemoradiation therapy (external-beam radiation therapy [EBRT] with chemotherapy).
Capecitabine + mitomycin + radiation therapy.[4,5]
The standard of care for all other stage I, II, and III anal cancers in appropriate patients is chemoradiation therapy (external-beam radiation therapy [EBRT] with chemotherapy).
5-FU + cisplatin + radiation therapy.[6,7]
Alternative strategies such as radiation therapy alone or surgery alone may be considered, depending on the clinical context.
Radical resection is reserved for residual or recurrent cancer in the anal canal after nonoperative therapy.
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Preserved source evidence · Not medical advice