Search Results for: acanthosis%20nigricans

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A Clinical Atlas of 101 Common Skin Diseases

Acanthosis Nigricans

Pigmented plaques formed by confluence of smooth-surfaced soft papules, some of which may become polypoid, traversed by accentuations of skin folds. This disease has a predilection for intertriginous regions. The condition may develop consequent to…

Therapeutic Strategies in Dermatology

Oral Hairy Leukoplakia: Key Points

…appearance. Biopsy reveals characteristic histopathologic features including epithelial hyperkeratosis with papillomatosis, acanthosis, and ballooning degeneration within the epidermis. Viral changes can also be noted and also detected by…

Therapeutic Strategies in Dermatology

Pruritic Urticarial Papules and Plaques of Pregnancy: Initial Evaluation

…ltrate with variable eosinophils, neutrophils, and dermal edema. The epidermis is often unaffected, though focal spongiosis, acanthosis, and parakeratosis may be seen. If pemphigoid gestationis is on the differential diagnosis (early urticarial…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Benign, Pseudo, or Malignant Acanthosis Nigricans?

…were described by Pollitzer and by Janovsky in 1891. Curth classified acanthosis nigricans into malignant, benign, syndromic acanthosis nigricans or pseudoacanthosis nigricans. . . . The concept of acanthosis nigricans as a marker of malignancy is…

Differential Diagnosis in Dermatopathology

Nevus verrucosus vs. Acanthosis nigricans

Pigmented plaques formed by confluence of smooth-surfaced soft papules, some of which may become polypoid, traversed by accentuations of skin folds. This disease has a predilection for intertriginous regions. The condition may develop consequent to…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…atofibroma complicated by lichen simplex chronicus and signs of excoriation The compact orthokeratosis, hypergranulosis, and acanthosis are signs of rubbing persistently; the epidermal necrosis, evidenced by karyolysis in the upper portion of the…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…ion may simulate complete regression of melanoma. 11.11.8A: Perivascular dermatosis, lichenoid + 11.11.8B: Lymphocytes only, acanthosis, hypergranulosis, and hyperkeratosis = Lichen planus-like keratosis, late The changes at the periphery shown here…

Differential Diagnosis in Dermatopathology

Discussions

…gnant neoplasm, usually an adenocarcinoma of the gastrointestinal or genital tract, breast, or lung (“malignant” acanthosis nigricans). Each of these forms of acanthosis nigricans, irrespective of the underlying cause, has the same…

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