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…
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 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…
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,…
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 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,…
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 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…
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…
This chapter provides images of a collection of conditions that result from errors in metabolism. Many of these diseases manifest in the skin secondary to the deposition of material such…
