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Updated: Jun 17, 2026

Anterior High-Resolution Optical Coherence Tomography in the Diagnosis and Therapeutic Monitoring of Ocular Surface Squamous Neoplasia
Published on: August 9, 2024
Epidermoid carcinoma of the anal canal
Bruce W Robb1, Matthew G Mutch
1Department of Surgery, Washington University School of Medicine, St. Louis, MO 63110-1010, USA.
Abstract:
Anal cancers are rare tumors with only an expected 4000 new diagnoses in 2005. The majority of these are epidermoid or squamous cell cancers. Despite the rarity of this disease, great advances have been made in its understanding and treatment. The human papillomavirus (HPV), immunosuppression for solid organ transplantation, the human immunodeficiency virus (HIV), and sexual practices are changing the demographics of the disease from elderly women to young men who have sex with men and young women infected with HPV and HIV. The treatment of these malignancies was radically changed with Dr. Nigro's description in 1974 of the use of a nonoperative treatment strategy. Today, radiochemotherapy represents first-line therapy and the role of surgery has been largely relegated to that of salvage therapy for treatment failures of nonoperative management.
Insights
Anal cancers, primarily squamous cell, are rare but advancing in understanding and treatment. Radiochemotherapy is now first-line, shifting surgery to a salvage role for treatment failures.
Area of Science:
- Oncology
- Epidemiology
Background:
- Anal cancers are rare, predominantly squamous cell carcinomas.
- Demographics are shifting due to human papillomavirus (HPV), HIV, and immunosuppression.
Purpose of the Study:
- To review the current understanding and treatment of anal cancers.
- To highlight the changing epidemiology and treatment strategies.
Main Methods:
- Literature review of anal cancer research.
- Analysis of epidemiological trends and treatment outcomes.
Main Results:
- Human papillomavirus (HPV) and human immunodeficiency virus (HIV) are key factors in changing demographics.
- Nonoperative treatment strategies, particularly radiochemotherapy, are now standard first-line care.
Conclusions:
- Radiochemotherapy has replaced surgery as the primary treatment for anal cancer.
- Surgery is now reserved for salvage therapy in cases of treatment failure.
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