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A Clinical Atlas of 101 Common Skin Diseases

Cysts and Cystic Hamartomas

Papules, nodules, and tumors that, on gross examination, are usually skin colored and, on histopathologic examination, consist of an epithelium-lined sac that contains fluid, cells, or both in the case of true cysts and of cysts that are associated…

A Clinical Atlas of 101 Common Skin Diseases

Molluscum Contagiosum

A hyperplasia of infundibular epithelium consequent to the effects of infection by a pox virus and manifesting itself clinically as one or more skin-colored, smooth-surfaced, dome-shaped papules, each with a central umbilication filled with horny ma…

Therapeutic Strategies in Dermatology

Folliculitis (including pseudofolliculitis barbae): Key Points

…fection (dolor, calor, rubor, and tumor) may be absent, making differentiation from milaria, papulovesicular viral exanthems, and acneiform eruptions difficult. Folliculitis is a common presentation of infection with community-acquired methicillin-re…

A Clinical Atlas of 101 Common Skin Diseases

Nevus Sebaceus

A hamartoma of epidermis, epithelial structures of adnexa, and presumably dermal elements, typified, when fully formed, by a papillated or verrucous yellowish plaque situated usually on the scalp. The condition may present itself as a solitary lesio…

A Clinical Atlas of 101 Common Skin Diseases

Dermatofibrosarcoma Protuberans

A malignant nonepithelial neoplasm (a sarcoma) presumably of perineural fibrocytes that presents itself usually on the trunk, but sometimes elsewhere, such as the extremities, face, and scalp. A papule of it tends to become a plaque, a nodule, a tum…

Therapeutic Strategies in Dermatology

Oral Hairy Leukoplakia: Key Points

…on of HIV-infected individuals; risk of reactivation increases with elevated viral load and reduced CD4 lymphocyte count. OHL has also been described in other immunocompromised individuals, including patients with hematologic malignancy, persons unde…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Eccrine Neoplasms?

…CT: Appleton-Lange, 1990:624. Tumors that demonstrate eccrine differentiation may recapitulate either mature or embryonic eccrine gland structure. For example, ductular differentiation in eccrine neoplasms may be either well developed, with a promin…

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