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Histologic Diagnosis of Inflammatory Skin Diseases

Post-inflammatory pigmentary alteration

…histopathologic Complete regression of a lichen planus-like keratosis, which may be conceived of as “postinflammatory” in the sense that lymphocytes destroy keratocytes from which melanin is discharged, often is accompanied by signs of…

Histologic Diagnosis of Inflammatory Skin Diseases

Fox-Fordyce disease

…ly; they never display keratotic plugs in the center of them. Keratosis pilaris develops on the extensor surface of arms particularly and not in the axilla. Findings histopathologic Fully developed Dilation of infundibula by orthokeratotic cells Aca…

Differential Diagnosis in Dermatopathology

Pale-cell acanthoma vs. Psoriasis, plaque expression

…ule on skin damaged badly by sunlight is referred to as solar keratosis. When present as a plaque it is termed Bowen’s disease, and when present as many papules in the anogenital region it is called bowenoid papulosis. Solar keratosis, Bowen&#8…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

Regression of lichen planus-like keratosis Regression of primary cutaneous melanoma 1. Signs of residual solar lentigo or reticulated seborrheic keratosis apparent in sections of tissue sometimes 1. No residual keratocytic neoplasm such as solar…

Dermatology Practical & Conceptual

See Classification of Pigmented Lesions

…artomas Collagenous nevus, papillary dermal type Nevoid hyperkeratosis of the nipple Benign neoplasms Solar lentigo, including lichen planus-like keratosis Seborrheic keratosis Malignant neoplasms Basal cell carcinoma, pigmented Solar keratosi…

Differential Diagnosis in Dermatopathology

Discussions

…sent and varies in density. Both conditions are marked by parakeratosis in which are variable amounts of serum. There are hypogranulosis, pallor of the epidermis, and neutrophils in the cornified layer and beneath it in viable epithelium. An increase…

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