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Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Lentigo?

“Because lentigines are larger and more variegated than true freckles, they are not uncommonly biopsied to exclude melanocytic dysplasia or radial growth phase melanoma, such as lentigo maligna.” Murphy G. Melanocytic tumors. In: Derma…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Necrobiosis?

…ominant, sporadic, and acquired forms have been described. The papules overly a focus of necrobiotic collagen, which is eventually extruded through an umbilication of the papule, which then resolves.” Stricklin GP. Diseases of collagen and ela…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Palpable Purpura?

…Mucha-Habermann disease, in addition to consisting of reddish papules, scaly papules, vesicles, ulcers, and scars, often displays purpuric papules. The papules are formed mostly by infiltrates of lymphocytes around venules of both vascular plexuses…

Histologic Diagnosis of Inflammatory Skin Diseases

Grover’s disease

…etimes so numerous as to be set close. Individual lesions Pink papules and, uncommonly, papulovesicles Course Sometimes weeks, i.e., transient, but more often months and years, i.e., persistent Variations clinical Keratotic papules occur in the Darie…

Histologic Diagnosis of Inflammatory Skin Diseases

Mycosis fungoides

Mycosis fungoides Synonyms Cutaneous T-cell lymphoma Presentation stereotypical Age and Sex Adults usually, although children may be affected. Males preponderant. Distribution of lesions Often widespread, but sometimes localized to a single patch or…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Hyalin?

“With the high power the hyaline is seen in very varied forms, which all show the same fuchsin red reaction. The first forms a section by itself; it comprises hyaline balls of different size, which lie free between the epithelial cells, and w…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Inverted Follicular Keratosis, Tricholemmoma, and Desmoplastic Tricholemmoma?

“For about the last 8 years my associates and I have been observing a lesion—a keratosis—which occurs mostly on the face: I should say about 90 percent on the face, the remainder on other parts of the body. These lesions are characterized cli…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Parapsoriasis?

…lichenoides acuta) begin as pink macules that soon become red papules, purpuric papules, vesicles, some of which may be hemorrhagic, ulcers, and scars. When lesions of Mucha-Habermann disease develop slowly (pityriasis lichenoides chronica), pink, n…

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