Search Results for: papillomatosis of gougerot-carteaud

Differential Diagnosis in Dermatopathology

Verrucous seborrheic keratosis vs. Verrucous epidermal nevus

A malignant neoplasm of keratinocytes that when present as a keratotic macule or papule 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…

Differential Diagnosis in Dermatopathology

Epidermolytic hyperkeratosis vs. Plane wart

A malignant neoplasm of keratinocytes that when present as a keratotic macule or papule 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…

A verrucous plaque on the lower leg

A verrucous plaque on the lower leg

…normal limits. A biopsy was obtained from the verrucous plaque. Histopathologic findings revealed epidermal hyperplasia and papillomatosis. Granulomas were noted in the dermis showing central suppuration and necrosis (Figure 2). A marked plasma…

Differential Diagnosis in Dermatopathology

Syringocystadenoma papilliferum vs. Hidradenoma papilliferum

A malignant neoplasm of keratinocytes that when present as a keratotic macule or papule 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…

Differential Diagnosis in Dermatopathology

Lichen planus vs. Lichen planus-like keratosis

A malignant neoplasm of keratinocytes that when present as a keratotic macule or papule 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…

Differential Diagnosis in Dermatopathology

Discussions

…pidermal basement membrane often is thickened markedly The lichenoid expression of persistent pigmented purpuric dermatitis (Gougerot and Blum) in which there usually are numerous extravasated erythrocytes and siderophages. Why an apparently banal…

Differential Diagnosis in Dermatopathology

Leukocytoclastic vasculitis vs. livedo vasculitis

A malignant neoplasm of keratinocytes that when present as a keratotic macule or papule 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…

Differential Diagnosis in Dermatopathology

Discussions

…of “palpable purpuras” in the skin other than leukocytoclastic vasculitis, for example, the lichenoid purpura of Gougerot and Blum (lichen aureus), purpuric papules of Mucha-Habermann disease, and purpuric tumors of a hematoma. Lesions…

Differential Diagnosis in Dermatopathology

Lichen planus vs. Lichenoid discoid lupus erythematosus

A malignant neoplasm of keratinocytes that when present as a keratotic macule or papule 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…