Search Results for: acanthosis

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Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Keratosis Lichenoides Chronica?

…odules covered by adherent keratosis. Examination by microscopy of sections from a lesion on an arm revealed hyperkeratosis, acanthosis, and an infiltrate of inflammatory cells in the dermis mainly along blood vessels; a transverse section showed…

Differential Diagnosis in Dermatopathology

Granular-cell tumor vs. Xanthoma

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

Fox-Fordyce disease

…particularly and not in the axilla. Findings histopathologic Fully developed Dilation of infundibula by orthokeratotic cells Acanthosis of infundibular epidermis Spongiosis of infundibular epidermis, including spongiotic vesiculate. Cornoid…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Erythrodermas—Nonspecific Histopathologically?

…n. 7th ed. Philadelphia: JB Lippincott, 1990:111. “Spongiotic epidermal changes with subsequent parakeratosis and mild acanthosis are found in acute forms [of erythroderma]. The inflammatory infiltrate is perivascular whereas in the papillary…

Differential Diagnosis in Dermatopathology

Lichen nitidus vs. Lichen striatus

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…

Differential Diagnosis in Dermatopathology

Pemphigus vulgaris vs. Grover’s disease, pemphigus vulgaris-like

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…

Differential Diagnosis in Dermatopathology

Photoallergic dermatitis vs. Phototoxic dermatitis

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

Radiation dermatitis and panniculitis

…epidermal fibrin often Vacuolar alteration along the dermoepidermal junction in conjunction with a few scattered lymphocytes Acanthosis and hyperkeratosis in foci Late Scant infiltrate of lymphocytes and plasma cells around dermal venules…

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