Bowen's Disease

Definition

A superficial precancerous squamous cell cancer, slow growing (i.e. has not started spreading) skin malignancy.

Description

Red-brown, scaly or crusty patch on the skin that resembles psoriasis, dermatitis or eczema that can occur on any part of the body.

Demographics

Bowen's disease affects both males and females. Women are affected in the genital area three times as often as men. The disease can occur at any age, but is rare in children.

Causes and symptoms

The exact cause of Bowen's disease is unknown. Like many forms of cancer, long-term sun exposure may be a cause. The skin usually indicates sun damage, such as wrinkling, changes in pigmentation, and loss of elasticity. Ingestion of arsenic has been associated with cases of Bowen's disease found in skin areas unexposed to light or mucous membranes. Human papillomavirus 16 DNA is found repeatedly in Bowen's disease lesions, which suggests that this virus might be a cause. The role of heredity is not well understood. There are cases of Bowen's disease for which a cause cannot be determined.

Symptoms

The symptoms of Bowen's disease include:

  • plaque located on or within the skin (intraepidermal)
  • open sore that bleeds and crusts and persists for weeks
  • wart-like growth that crusts and occasionally bleeds
  • persistent, scaly red patch with irregular borders that sometimes crusts or bleeds
  • pinkish or brownish raised areas of skin

Diagnosis

Bowen's disease can be confused with the other common skin disorders, such as psoriasis or types of dermatitis. Paget's disease of the breast and malignant melanoma are other types of cancer which may be confused for Bowen's disease. A medical history, physical examination, and biopsy establish the diagnosis.

Clinical staging, treatments, and prognosis

Treatment usually involves surgical removal of the lesion. Curettage and cautery methods, which include carbon dioxide lasers, liquid nitrogen, and topical fluorouracil (5-FU) compose the most efficient treatment for management of small solitary lesions.

There can be difficulties with the liquid nitrogen, 5-FU (Efudex, fluoroplex), scraping and burning because Bowen's lesions can hide deep in pores, and cells may extend into the surrounding area where lesion is visible.

Clinical trials

Dr. Colin Morton and colleagues at the Western Infirmary in the UK have been developing a photodynamic therapy using topical 5-aminolaevulinic acid(5-ALA).

Dr. Lee and colleagues at the University College of Medicine in Korea have been developing a specially designed radioactive skin patch.


Advertisement
Advertisement