Bowenoid papulosis - Anogenital in
BP typically occurs in young sexually active adults. There is an equal male-to-female ratio. Lesions are usually asymptomatic and occur primarily in the genital and perianal region.
BP has a variable course, with a frequent potential for spontaneous regression as well as persistence and recurrence. A postsurgical excision recurrence rate of up to 20.3% has also been documented.
The risk of progression to invasive SCC in immunocompetent patients is estimated at 2.6%. In immunocompromised patients, the risk of invasive malignancy may be higher; one-half of HIV-infected patients with anogenital warts have SCCIS on histology.
D04.9 – Carcinoma in situ of skin, unspecified
402913004 – Bowenoid papulosis
Differential Diagnosis & Pitfalls