Bowenoid Papulosis

Overview

Definition

• Low-grade squamous cell carcinoma Squamous cell carcinoma Cutaneous squamous cell carcinoma (cSCC) is caused by malignant proliferation of atypical keratinocytes. This condition is the 2nd most common skin malignancy and usually affects sun-exposed areas of fair-skinned patients. The cancer presents as a firm, erythematous, keratotic plaque or papule. Squamous Cell Carcinoma (SCC) (SCC) in situ of the genitalia (although extragenital lesions have been reported)
• Induced by human HPV HPV Human papillomavirus (HPV) is a nonenveloped, circular, double-stranded DNA virus belonging to the Papillomaviridae family. Humans are the only reservoir, and transmission occurs through close skin-to-skin or sexual contact. Human papillomaviruses infect basal epithelial cells and can affect cell-regulatory proteins to result in cell proliferation. Papillomavirus (HPV) infection:
  • Oncogenic genotypes (e.g., HPV 16 HPV 16 A type of alphapapillomavirus usually associated with genital warts; and laryngeal neoplasms. Papillomavirus (HPV), 18, and 31)
  • Sexually transmitted condition
• Overall course of disease:
  • Generally regresses spontaneously
  • In rare cases, may transform into invasive SCC (< 1 %)

Epidemiology

• The condition most often affects individuals in their 3rd to 5th decade of life ( mean Mean Mean is the sum of all measurements in a data set divided by the number of measurements in that data set. Measures of Central Tendency and Dispersion age: 31 years).
• Both sexes are affected, with slight male predominance.
• No racial predilection

Risk factors

• HPV HPV Human papillomavirus (HPV) is a nonenveloped, circular, double-stranded DNA virus belonging to the Papillomaviridae family. Humans are the only reservoir, and transmission occurs through close skin-to-skin or sexual contact. Human papillomaviruses infect basal epithelial cells and can affect cell-regulatory proteins to result in cell proliferation. Papillomavirus (HPV) infection ( HPV 16 HPV 16 A type of alphapapillomavirus usually associated with genital warts; and laryngeal neoplasms. Papillomavirus (HPV) is the most common associated agent)
• Immunocompromised immunocompromised A human or animal whose immunologic mechanism is deficient because of an immunodeficiency disorder or other disease or as the result of the administration of immunosuppressive drugs or radiation. Gastroenteritis status
• Smoking Smoking Willful or deliberate act of inhaling and exhaling smoke from burning substances or agents held by hand. Interstitial Lung Diseases

Clinical Presentation

Diagnosis and Management

Diagnosis

• Skin biopsy Skin Biopsy Secondary Skin Lesions: 
  • Focal epidermal hyperplasia Epidermal Hyperplasia Leukoplakia
  • Partial-/full-thickness epidermal dysplasia
• HPV HPV Human papillomavirus (HPV) is a nonenveloped, circular, double-stranded DNA virus belonging to the Papillomaviridae family. Humans are the only reservoir, and transmission occurs through close skin-to-skin or sexual contact. Human papillomaviruses infect basal epithelial cells and can affect cell-regulatory proteins to result in cell proliferation. Papillomavirus (HPV) subtyping
• Evaluation of other sites: oral, genital, and anal areas
• Sexual-partner evaluation 

Management

• Conservative, with close follow-up
• Most cases regress in an average of 8 months.
• Persistent or cosmetically bothersome lesions can be treated with locally ablative therapies (e.g., cryotherapy Cryotherapy A form of therapy consisting in the local or general use of cold. The selective destruction of tissue by extreme cold or freezing is cryosurgery. Chondrosarcoma, excision, or fluorouracil Fluorouracil A pyrimidine analog that is an antineoplastic antimetabolite. It interferes with DNA synthesis by blocking the thymidylate synthetase conversion of deoxyuridylic acid to thymidylic acid. Bowen Disease and Erythroplasia of Queyrat).
• Prevention: HPV HPV Human papillomavirus (HPV) is a nonenveloped, circular, double-stranded DNA virus belonging to the Papillomaviridae family. Humans are the only reservoir, and transmission occurs through close skin-to-skin or sexual contact. Human papillomaviruses infect basal epithelial cells and can affect cell-regulatory proteins to result in cell proliferation. Papillomavirus (HPV) vaccination Vaccination Vaccination is the administration of a substance to induce the immune system to develop protection against a disease. Unlike passive immunization, which involves the administration of pre-performed antibodies, active immunization constitutes the administration of a vaccine to stimulate the body to produce its own antibodies. Vaccination
• Recurrence is common regardless of the treatment method.

Differential Diagnosis

• Squamous cell carcinoma Squamous cell carcinoma Cutaneous squamous cell carcinoma (cSCC) is caused by malignant proliferation of atypical keratinocytes. This condition is the 2nd most common skin malignancy and usually affects sun-exposed areas of fair-skinned patients. The cancer presents as a firm, erythematous, keratotic plaque or papule. Squamous Cell Carcinoma (SCC) (SCC): the 2nd most common skin Skin The skin, also referred to as the integumentary system, is the largest organ of the body. The skin is primarily composed of the epidermis (outer layer) and dermis (deep layer). The epidermis is primarily composed of keratinocytes that undergo rapid turnover, while the dermis contains dense layers of connective tissue. Skin: Structure and Functions cancer and usually presents as a firm, erythematous, keratotic plaque Plaque Primary Skin Lesions or papule Papule Elevated lesion < 1 cm in diameter Generalized and Localized Rashes. Diagnosis should be suspected on a clinical basis, and histopathologic examination confirms the diagnosis, with pathognomonic features such as keratin Keratin A class of fibrous proteins or scleroproteins that represents the principal constituent of epidermis; hair; nails; horny tissues, and the organic matrix of tooth enamel. Two major conformational groups have been characterized, alpha-keratin, whose peptide backbone forms a coiled-coil alpha helical structure consisting of type I keratin and a type II keratin, and beta-keratin, whose backbone forms a zigzag or pleated sheet structure. Alpha-keratins have been classified into at least 20 subtypes. In addition multiple isoforms of subtypes have been found which may be due to gene duplication. Seborrheic Keratosis pearls.
• Genital warts Warts Benign epidermal proliferations or tumors; some are viral in origin. Female Genitourinary Examination ( HPV HPV Human papillomavirus (HPV) is a nonenveloped, circular, double-stranded DNA virus belonging to the Papillomaviridae family. Humans are the only reservoir, and transmission occurs through close skin-to-skin or sexual contact. Human papillomaviruses infect basal epithelial cells and can affect cell-regulatory proteins to result in cell proliferation. Papillomavirus (HPV)): common sexually transmitted condition induced by HPV HPV Human papillomavirus (HPV) is a nonenveloped, circular, double-stranded DNA virus belonging to the Papillomaviridae family. Humans are the only reservoir, and transmission occurs through close skin-to-skin or sexual contact. Human papillomaviruses infect basal epithelial cells and can affect cell-regulatory proteins to result in cell proliferation. Papillomavirus (HPV) infection. Lesions present as exophytic Exophytic Retinoblastoma cauliflower-like growths that can be seen on the penis Penis The penis is the male organ of copulation and micturition. The organ is composed of a root, body, and glans. The root is attached to the pubic bone by the crura penis. The body consists of the 2 parallel corpora cavernosa and the corpus spongiosum. The glans is ensheathed by the prepuce or foreskin. Penis: Anatomy, vulva Vulva The vulva is the external genitalia of the female and includes the mons pubis, labia majora, labia minora, clitoris, vestibule, vestibular bulb, and greater vestibular glands. Vagina, Vulva, and Pelvic Floor: Anatomy, vagina Vagina The vagina is the female genital canal, extending from the vulva externally to the cervix uteri internally. The structures have sexual, reproductive, and urinary functions and a rich blood supply, mainly arising from the internal iliac artery. Vagina, Vulva, and Pelvic Floor: Anatomy, or cervix Cervix The uterus, cervix, and fallopian tubes are part of the internal female reproductive system. The most inferior portion of the uterus is the cervix, which connects the uterine cavity to the vagina. Externally, the cervix is lined by stratified squamous cells; however, the cervical canal is lined by columnar epithelium. Uterus, Cervix, and Fallopian Tubes: Anatomy.
• Bowen disease Bowen Disease Bowen disease and erythroplasia of Queyrat are 2 related entities that describe squamous cell carcinoma (SCC) in situ of the skin. Bowen disease usually presents in sun-exposed areas (e.g., face and forearms) as a red, scaly skin lesion. When the glans penis is involved, the lesion is called erythroplasia of Queyrat, with uncircumcised males being at high risk. Bowen Disease and Erythroplasia of Queyrat: synonymous with SCC in situ of the skin Skin The skin, also referred to as the integumentary system, is the largest organ of the body. The skin is primarily composed of the epidermis (outer layer) and dermis (deep layer). The epidermis is primarily composed of keratinocytes that undergo rapid turnover, while the dermis contains dense layers of connective tissue. Skin: Structure and Functions and presents as a scaly, red, well-demarcated papule Papule Elevated lesion < 1 cm in diameter Generalized and Localized Rashes or plaque Plaque Primary Skin Lesions. Biopsy Biopsy Removal and pathologic examination of specimens from the living body. Ewing Sarcoma is necessary to confirm the diagnosis and rule out invasive carcinoma. Then the skin Skin The skin, also referred to as the integumentary system, is the largest organ of the body. The skin is primarily composed of the epidermis (outer layer) and dermis (deep layer). The epidermis is primarily composed of keratinocytes that undergo rapid turnover, while the dermis contains dense layers of connective tissue. Skin: Structure and Functions cancer should be definitively treated with excision or topical chemotherapy Chemotherapy Osteosarcoma.