Pseudobullous malignant melanoma in situ. A pitfall in diagnosis.
A biopsied specimen of a pink lesion on the knee of a 21-year-old woman showed histologic features of subepidermal vesicular dermatitis. Further studies disclosed diagnostic features of malignant melanoma in situ, and additional clinical data corroborated the diagnosis.
D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007868:Leg Dermatoses / Q000175:diagnosis; D008545:Melanoma / Q000175:diagnosis* / Q000473:pathology; D012872:Skin Diseases, Vesiculobullous / Q000175:diagnosis; D012878:Skin Neoplasms / Q000175:diagnosis* / Q000473:pathology