Precancerous Lesions and Cutaneous Carcinomas Epidermal Precancers and Cancers Cutaneous epithelial cancers [nonmelanoma skin cancer (NMSC)] originate most commonly in the epidermal germinative keratinocytes or adnexal structures. The two principal…
Melanoma Precursors and Primary Cutaneous Melanoma Precursors of Cutaneous Melanoma Precursors of melanoma are lesions that are benign per se but have the potential of turning malignant and thus giving…
Skin Signs of Systemic Cancers Mucocutaneous Signs of Systemic CancersICD-9: 199.0 ICD-10: M8000/6 Mucocutaneous findings may suggest systemic cancers in several ways: Associations of heritable mucocutaneous disorders with systemic cancers….
Sexually Transmitted Diseases Human Papillomavirus: Anogenital InfectionsICD-9: 079.4 ICD-10: B97.7 Mucosal human papilloma virus (HPV) infections are the most common sexually transmitted infection (STIs) seen by the dermatologist. Only 1-2%…
Cutaneous Lymphomas and Sarcoma Cutaneous lymphomas are clonal proliferations of neoplastic T or B cells, rarely natural killer cells or plasmacytoid dendritic cells. Cutaneous lymphomas are the second most common…
Disorders of Hair Follicles and Related Disorders Human hair has little vestigial function: Contributes to a psychological perception of beauty and attractiveness. Tactile sensation. Protects the scalp, face, and neck…
Genetic and Acquired Bullous Diseases Bullous diseases are defined as conditions where cavities filled with fluid form in the superficial layers of skin clinically manifesting as vesicles or blisters. Although…
Skin Signs of Hematologic Disease Thrombocytopenic PurpuraICD-9: 287.31 ICD-10: D69.3 Thrombocytopenic purpura (TP) is characterized by cutaneous hemorrhages occurring in association with a reduced platelet count. Occur at sites of…
Arthropod Bites, Stings, and Cutaneous Infections Cutaneous Reactions to Arthropod Bites Arthropods are defined by an exoskeleton, segmented body, and jointed appendages. Four of 9 classes of arthropods cause local…
Skin Signs of Vascular Insufficiency Atherosclerosis, Arterial Insufficiency, andAtheroembolization ICD-9: 440 ICD-10: I70 Atherosclerosis obliterans (ASO), especially of the lower extremities, is associated with spectrum of cutaneous findings of slowly…
