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A Clinical Atlas of 101 Common Skin Diseases

Nevus Sebaceus

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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.

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

Melanocytic Nevi and Melanotic Macules

Hamartomas (“congenital” melanocytic nevi) and benign neoplasms (“acquired” melanocytic nevi) of various specific types, all of which are composed of abnormal melanocytes and manifested clinically as lesions of different colo…

A Clinical Atlas of 101 Common Skin Diseases

Epidermal Nevi

Epidermal nevi are hamartomas in which the epidermis is abnormal, being hyperkeratotic, and in which lesions are aligned along Blaschko’s lines….

A Clinical Atlas of 101 Common Skin Diseases

Melanoma

A malignant neoplasm of melanocytes that, in the skin, begins as a macule and may become a patch or a papule. A flat lesion of melanoma tends to be asymmetrical, poorly circumscribed with a scalloped, jagged, or notched border, and variegate, mostly…

Therapeutic Strategies in Dermatology

Vascular Birthmarks: Key Points

…n persist throughout life. Most are benign lesions, such as a nevus simplex (a.k.a. salmon patch) or a port-wine stain. However, some represent a manifestation of a syndrome with extracutaneous involvement or may be symptomatic lesions with deep subc…

Therapeutic Strategies in Dermatology

Facial Melanosis, Melasma: Initial Evaluation

…rential diagnosis Photoallergic / phototoxic contact dermatitis Melanosis of Riehl’s (likely a photo-distributed contact dermatitis) Nevus of Ota, Nevus of Hori (mainly in Asians) Post-inflammatory hyperpigmentation…

Therapeutic Strategies in Dermatology

Melanoma: Key Points

…highly uneven pigmentation and/or unusual pigmentation (i.e., blue, pink, red, purple). Nodular melanoma (NMM) typically presents as a solitary nodule that arises from a preexisting nevus or de novo. It may grow rapidly in thickness without radial sp…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Blue Nevus?

“Two forms [of blue nevus] exist, the rare being termed ‘cellular blue naevus.’ In the common variety bipolar and dendritic melanocytes lie singly or in masses in the dermis. . . . The cellular type is composed of the same element…

Dermatology Practical & Conceptual

Blue nevus with a starburst pattern on dermoscopy

…stract An 11-year-old girl presented to our department with a blue-gray papule approximately 4 mm in diameter. We suspected that it was a blue nevus or a pigmented Reed/Spitz nevus. On dermoscopic observation, the lesion showed homogeneous black-blui…

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