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Individuals may acquire a multitude of benign skin lesions over the course of a lifetime. Many of these lesions are easily visible, and patients often ask clinicians to confirm that new growths on the skin are benign. The clinical features, diagnosis, and treatment of some acquired benign skin lesions will be discussed here.
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This topic will review the pathogenesis, clinical presentation, and management of linear epidermal nevus. Nevus sebaceous is discussed separately. (See "Nevus sebaceus and nevus sebaceus syndromes" .)
Nevus sebaceus, also called nevus sebaceus of Jadassohn or organoid nevus, is a benign hamartoma of the skin, characterized by hyperplasia of the epidermis, immature hair follicles, and sebaceous and apocrine glands. Lesions are usually present at birth and appear as waxy, yellow-orange or tan, hairless plaques (picture 1A).
There is no established clinical guideline for prophylactic removal of epidermal nevus. However, a biopsy should be done if a secondary malignancy is suspected in an epidermal nevus. AD
This topic will discuss the diagnosis and management of Spitz nevus and spitzoid proliferations in children. The classification and histopathologic and molecular diagnosis of Spitz nevus and atypical Spitz tumors are discussed in more detail separately.
This article will review principles of laser and light-based therapy for hyperpigmented skin lesions, lasers used for this indication, and therapeutic options for select disorders of hyperpigmentation.
The classification, epidemiology, clinical manifestations, diagnosis, and management of Spitz tumors will be discussed here. The diagnosis and management of Spitz nevus in children are discussed separately. Congenital nevi, acquired melanocytic nevi, and atypical nevi are discussed separately.
Formal studies of the therapeutic options for porokeratosis are lacking, but various topical, surgical, destructive, and systemic therapies appear to be effective in some patients. The pathogenesis, clinical manifestations, diagnosis, and management of porokeratosis will be reviewed here.
Patients with eyelid abnormalities often present to their primary care practitioner for evaluation and management. Most eyelid lesions are benign. The clinician should be able to identify common etiologies such as hordeola (stye) (picture 1A-B), chalazia (picture 2A-B and figure 1), and xanthelasma (picture 3) and to distinguish them from more ...