Search Results for: allen\\'s blue nevus

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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

…errucous yellowish plaque situated usually on the scalp. The condition may present itself as a solitary lesion or as multiple lesions that follow Blaschko’s lines and, when systematized, is almost always associated with other congenital…

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…

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,…

Therapeutic Strategies in Dermatology

Vascular Birthmarks: Key Points

…benign vascular birthmarks that present in infancy with a wide spectrum of clinical presentations. Recent changes in the classification now restrict the term hemangioma to describe hemangioma of infancy, a benign, self-involuting, endothelial tumor…

Therapeutic Strategies in Dermatology

Facial Melanosis, Melasma: Initial Evaluation

…neous lip, and nose. Central facial involvement is most common but mandibular involvement may also occur. Differential diagnosis Photoallergic / phototoxic contact dermatitis Melanosis of Riehl’s (likely a photo-distributed contact dermatitis)…

Therapeutic Strategies in Dermatology

Melanoma: Key Points

Key Points The therapy of malignant melanoma is determined by the histopathologic features (primarily tumor thickness, ulceration, regression, and mitotic index), by the location of the tumor, by the presence of regional or distant metastases and…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Blue Nevus?

…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 elements as the ordinary type, but in addition possesses

Blue nevus with a starburst pattern on dermoscopy

Blue nevus with a starburst pattern on dermoscopy

…ppear as melanin-containing fibroblast-like cells grouped in irregular bundles admixed with melanin-containing macrophages, associated with excessive fibrous tissue in the middle or upper reticular dermis [2]. On dermoscopy, a blue nevus is

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