(Bowen's Disease; Intraepidermal Squamous Cell Carcinoma)
Bowen disease is a superficial squamous cell carcinoma in situ.
(See also Overview of Skin Cancer.)
Bowen disease is most common in sun-exposed areas but may arise at any location.
Because many skin cancers seem to be related to ultraviolet (UV) exposure, a number of measures are recommended to limit exposure.
Sun avoidance: Seeking shade, minimizing outdoor activities between 10 am and 4 pm (when sun's rays are strongest), and avoiding sunbathing and the use of tanning beds
Use of protective clothing: Long-sleeved shirts, pants, and broad-brimmed hats
Use of sunscreen: At least sun protection factor (SPF) 30 with broad-spectrum UVA/UVB protection, used as directed (ie, reapplied every 2 h and after swimming or sweating); should not be used to prolong sun exposure