dermatologic disorders
Squamous Cell Carcinoma in Situ
Diagnosis of Squamous Cell Carcinoma in Situ
Biopsy Squamous cell carcinoma in situ is often suspected when a rash secondary to a disorder such as psoriasis or atopic dermatitis fails to respond to treatment. Diagnosis is by biopsy, which shows full-thickness epidermal dysplasia but no dermal involvement. 