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Anal Cancer: Definitive Chemoradiation with Mitomycin-C and 5-Fluorouracil

Organ-preserving definitive chemoradiation with mitomycin-C and 5-fluorouracil for squamous cell carcinoma of the anus

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Onkoloji department. Book Appointment →

What is Anal Cancer: Definitive Chemoradiation with Mitomycin-C and 5-Fluorouracil?

Definitive chemoradiation provides organ-preserving primary treatment for squamous cell anal carcinoma.

Nigro regimen combines external beam radiotherapy with concurrent mitomycin-C and 5-fluorouracil.

Cure rates with chemoradiation exceed 70% in localized disease with permanent colostomy avoidance in 80%.

HPV infection particularly types 16 and 18 strongly associates with anal cancer development.

Salvage surgery (abdominoperineal resection) reserved for residual or recurrent disease.

Symptoms

Anal bleeding, pain, mass, pruritus represent common presenting symptoms.
Tenesmus, change in bowel habits, fecal incontinence may occur with advanced disease.
Inguinal lymphadenopathy may occur with regional spread.
Acute radiation toxicity including dermatitis, mucositis, diarrhea, cytopenias common during treatment.
Late radiation toxicity including fibrosis, fistula, anal stenosis may occur with chronic effects.

Risk Factors

HPV infection particularly types 16 and 18 represents major risk factor for anal cancer.
HIV infection markedly increases anal cancer risk requiring screening in HIV-positive populations.
Receptive anal intercourse and high-risk sexual behaviors increase HPV transmission risk.
Immunosuppression including transplant recipients increases anal cancer risk.
Smoking, prior cervical or vulvar dysplasia or cancer represent additional risk factors.

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Anal symptoms including bleeding, pain, mass warrant urgent evaluation with examination and biopsy.
  • Specialized colorectal or oncology center referral with experienced multidisciplinary teams optimizes outcomes.
  • Severe acute radiation toxicity requires aggressive supportive care and treatment modification.
  • Persistent or recurrent disease after chemoradiation requires evaluation for salvage surgery.
  • Anal cancer screening in HIV-positive populations and other high-risk groups warrants consideration.

Treatment Methods

01
External beam radiotherapy 45-54 Gy to primary tumor and regional lymphatics.
02
Concurrent mitomycin-C bolus on day 1 and 29 with 5-fluorouracil continuous infusion days 1-4 and 29-32.
03
IMRT (intensity-modulated radiotherapy) techniques reduce toxicity while maintaining efficacy.
04
Salvage abdominoperineal resection for residual or recurrent disease after chemoradiation.
05
Comprehensive multidisciplinary care with radiation oncology, medical oncology, colorectal surgery, supportive care during chemoradiation including skin care, nutritional support, antidiarrheal therapy, growth factor support, post-treatment surveillance with examination, anoscopy, imaging, evaluation of long-term sexual and bowel function, salvage therapy planning, HPV vaccination education, HIV management for HIV-positive patients, smoking cessation, and survivorship care addressing chronic radiation effects provides optimal outcomes with cure rates exceeding 70% and organ preservation in most patients with anal squamous cell carcinoma.

Which Department to Visit?

You can visit our Onkoloji department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

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