Bowen Disease (Bowen's Disease; Intraepidermal Squamous Cell Carcinoma) By Gregory L Wells, MD, Ada West Dermatology and Dermatopathology Reviewed / Revised Sep 2022 View Patient Education Symptoms and Signs Diagnosis Treatment Prevention Topic Resources Bowen Disease (Shin) Bowen Disease (Multiple Lesions) Bowen disease is a superficial squamous cell carcinoma in situ.