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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

Facial Melanosis, Melasma: Initial Evaluation

Initial Evaluation Clinical images show homogeneously hyperpigmented macules and geographic or irregular patches typically located on forehead, zygomatic cheeks, upper cutaneous lip, and nose. Central facial involvement is most common but mandibular…

Differential Diagnosis in Dermatopathology

Nevus verrucosus vs. Acanthosis nigricans

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

Melanoma: Initial Evaluation

Initial Evaluation Clinical variants of melanoma: Superficial spreading melanoma (SSM): The most common form of melanoma, and typically presents with irregular borders, highly uneven pigmentation and/or unusual pigmentation (i.e., blue, pink, red,…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Blue Nevus?

…hree types of benign blue nevi are recognized: the common blue nevus, the cellular blue nevus, and the combined nevus. In addition, there are malignant blue nevi. … Histologically, the common feature of blue nevi is the presence of pigmented spindle…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Nevus?

nevus cells (nevocellular nevus, melanocytic nevus, pigmented nevus) or (2) to a lesion that is usually present at birth and is composed of mature or nearly mature structures (connatal hyperplasias, such as nevus sebaceus, eccrine nevus, nevus verru…

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