History of High-Resolution Anoscopy

Area of Science:

• Gastroenterology
• Oncology
• Infectious Diseases

Background:

• Anal squamous dysplasia is a significant concern, especially in HIV-positive populations.
• High-resolution anoscopy (HRA) is used for screening and management, but lacks formal guidelines.
• Understanding of HRA and anal dysplasia is largely adapted from cervical dysplasia literature.

Purpose of the Study:

• To review the historical evolution and current application of HRA in anal squamous dysplasia.
• To contextualize HRA within advances in understanding human papillomavirus (HPV)-related dysplasia.
• To highlight the impact of the HIV epidemic on anal cancer incidence and risk populations.

Main Methods:

• Literature review focusing on the history of HRA and anal dysplasia.
• Examination of key advances in understanding HPV-related squamous dysplasia.
• Analysis of epidemiological data, particularly concerning HIV-positive individuals.

Main Results:

• No randomized controlled trials or established national/international guidelines exist for HRA in anal dysplasia.
• Epidemiological data show highest prevalence and incidence of anal dysplasia in HIV-positive populations.
• The history of HRA use parallels the increasing understanding of anal dysplasia and its link to HPV.

Conclusions:

• HRA is a crucial tool for anal squamous dysplasia management, despite the absence of formal guidelines.
• The HIV epidemic has underscored the importance of monitoring anal dysplasia due to increased cancer risk.
• Further research and guideline development are needed to optimize HRA's role in anal cancer prevention.