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TP53 Wild-type, HPV-independent Anal Growth/(intra)Epithelial Lesion (ANGEL): a Potential Precursor of Anal Squamous Cell Carcinoma.
Mod Pathol
January 2025
Department of Pathology and Laboratory Medicine, University of Miami.
Human papillomavirus (HPV) underpins approximately 90% of squamous cell carcinomas (SCC) of the anus and perianal region. These tumors usually arise in association with precursor lesions such anal intraepithelial neoplasia/ high-grade squamous intraepithelial lesion (AIN 3/ HSIL), whereas a small subset of HPV-negative cancers may harbor mutations in TP53. Recently, vulvar lesions termed differentiated exophytic vulvar intraepithelial lesion/vulvar acanthosis with altered differentiated (DEVIL/VAAD) have been recognized as HPV-independent, TP53 wild-type precursors for vulvar carcinoma; however, analogous anal lesions have not been described.
View Article and Find Full Text PDFClinicopathologic and Molecular Characterization of Basal Cell Carcinoma Arising at Sun-protected Sites.
Am J Surg Pathol
January 2025
Department of Pathology, Brigham and Women's Hospital.
Basal cell carcinomas (BCC) are driven primarily by cumulative ultraviolet (UV) radiation exposure resulting in activation of the Hedgehog (Hh) signaling pathway, often as a result of UV-mediated Patched-1 (PTCH1) gene inactivation. Accordingly, BCCs most commonly arise at sun-exposed sites such as the head and neck. Very rarely, BCCs can arise at sun-protected sites such as the genital skin and perianal area.
View Article and Find Full Text PDFBuschke-Löwenstein Tumor (BLT): Successful Treatment of Human Papillomavirus (HPV)-Associated Squamous Cell Carcinoma With Radical Surgery and Chemotherapy.
Cureus
November 2024
Emergency Medicine, Public Health Institution Dom Zdravlja Prijedo, Prijedor, BIH.
The giant condyloma acuminatum, known as the Buschke-Löwenstein tumor (BLT), is an uncommon, slow-growing, cauliflower-like tumor located in the anogenital region. It has a high recurrence rate, is sexually transmitted, and is often linked with immunosuppression. This tumor is commonly associated with human papillomavirus (HPV) infection, making HPV one of the most prevalent sexually transmitted infections affecting the perineal and genital regions.
View Article and Find Full Text PDFManagement of Localized and Locally Advanced Anal Cancer.
Surg Oncol Clin N Am
January 2025
Division of Gastrointestinal Surgery, University of Alabama at Birmingham, Birmingham, AL, USA. Electronic address:
The initial evaluation and workup of anal canal cancer and perianal cancer is the same, but treatment strategies differ based on stage and location of disease. Chemoradiation remains the cornerstone of treatment for anal canal squamous cell carcinoma (SCC), while surgery is typically reserved for persistent or recurrent disease. Perianal SCC can be treated with local excision for early stage disease (T1N0, select T2N0) or chemoradiation for later stages.
View Article and Find Full Text PDFSquamous cell carcinoma arising from anal fistula in an HIV-positive individual: a case report.
J Surg Case Rep
November 2024
Anorectal Department, Shijiazhuang Traditional Chinese Medical Hospital, 233 Zhongshan Road, Shijiazhuang 050001, China.
Chronic anal fistula represents a prevalent form of perianal disease that frequently originates from perianal infection. Specifically, perianal abscesses that are inadequately or improperly treated are susceptible to the development of chronic anal fistulas. In HIV-infected individuals, an impaired immune system significantly diminishes the body's capacity to combat infections and inflammation, thereby complicating the healing process of anal fistulas.
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