©The Author(s) 2024.
World J Exp Med. Sep 20, 2024; 14(3): 98525
Published online Sep 20, 2024. doi: 10.5493/wjem.v14.i3.98525
Published online Sep 20, 2024. doi: 10.5493/wjem.v14.i3.98525
Table 2 World Health Organization histological classification of anal tumors
| Tumor type | Characteristics |
| Epithelial tumors | |
| Premalignant lesions | Intraepithelial neoplasia (dysplasia), low-grade |
| Intraepithelial neoplasia (dysplasia), high-grade | |
| Bowden disease | |
| Perianal squamous intraepithelial neoplasia | |
| Paget disease | |
| Carcinoma | Squamous cell carcinoma |
| Adenocarcinoma | |
| Mucinous adenocarcinoma | |
| Small cell carcinoma | |
| Undifferentiated carcinoma | |
| Others | |
| Nonepithelial tumors | Leiomyoma |
| Gastrointestinal stromal tumor | |
| Myofibroma | |
| Carcinoid tumors | NA |
| Melanoma | NA |
| Secondary tumors | Direct extension from adjacent organs: Rectal, cervical, and prostate carcinoma |
- Citation: English KJ. Anal carcinoma - exploring the epidemiology, risk factors, pathophysiology, diagnosis, and treatment. World J Exp Med 2024; 14(3): 98525
- URL: https://www.wjgnet.com/2220-315x/full/v14/i3/98525.htm
- DOI: https://dx.doi.org/10.5493/wjem.v14.i3.98525