AAFM Boards Dermatology Practice Test

Bowen's disease is classified as Squamous Cell Carcinoma in situ. This means that the abnormal cells involved are confined to the outermost layer of the skin, the epidermis, and have not yet invaded deeper layers or metastasized. It is considered an early form of skin cancer, representing dysplasia of squamous cells without any invasion into the surrounding structures.

Recognizing Bowen's disease as a form of carcinoma in situ is crucial since early treatment can prevent progression to invasive squamous cell carcinoma. This classification underscores the importance of timely diagnosis and intervention to mitigate potential health impacts. It also differentiates Bowen's disease from more benign skin conditions and other types of skin cancers, such as melanoma and basal cell carcinoma, which have different characteristics and behaviors.