Dermal and Subcutaneous Tumors
Vascular tumors range from red to blue, depending on the degree of vascular stasis and deoxygenation of hemoglobin. When associated with thrombosis or consumptive coagulopathy, the lesions often become hard…
Epidermal Nevi, Neoplasms, and Cysts
Epidermal neoplasms commonly present with hyperkeratosis, acanthosis, or papillomatosis. These may manifest clinically as a cutaneous horn, scale, palpable induration, a velvety or filiform appearance, or a smooth lesion raised…
Diseases of Skin Appendages
The field of dermatology includes diseases of both skin and the skin appendages, namely hair, sweat glands, and nails. A great variety of conditions affect the skin appendages, and some…
Genodermatoses and Congenital Anomalies
Genodermatoses include a variety of skin conditions due to underlying genetic mutations with and without associated systemic findings. New gene mutations are being discovered rapidly and allow for more definitive…
Cutaneous Vascular Diseases
This section of the atlas will focus on vascular disorders of the skin, including such entities as Raynaud disease, erythromelalgia, livedo racemosa, livedoid vasculopathy, cryoglobulinemia, purpura fulminans, superficial thrombophlebitis, purpura,…
Macrophage/Monocyte Disorders
This chapter includes granulomatous and histiocytic conditions that are either localized to the skin or can involve the skin as part of a systemic disease. Many will require a skin…
Viral Diseases
Viral diseases can manifest as nonspecific exanthems, such as in measles and many other morbilliform eruptions, or more specific patterned eruptions, such as the papules on the cheeks, elbows, knees,…
Cutaneous Lymphoid Hyperplasia, Cutaneous T-Cell Lymphoma, Other Malignant Lymphomas, and Allied Diseases
The evaluation of lymphoid neoplasms typically requires clinicopathological correlation, and classification often requires panels of immunostains. This section of the atlas will focus on the clinical appearance of cutaneous lymphomas…
Diseases of Mucous Membranes
Diseases of the mucous membranes include those involving the lips, tongue, palate, gingiva, teeth, and the floor of the mouth. Inspection of this entire surface should be included in the…
Melanocytic Nevi and Neoplasms
The evaluation of pigmented lesions is one of the most important skill sets in dermatology. The incidence of melanoma continues to increase, and early diagnosis plays a critical role in…
