Search Results for: papillomatosis of gougerot-carteaud

Differential Diagnosis in Dermatopathology

Discussions

…ably could arise in pre-existing mosaic warts and florid oral papillomatosis may be squamous-cell carcinoma secondary to infection of oral epithelium by papillomavirus. Bowenoid papulosis consists of many small, innocuous-looking papules particularly…

Dermatology Practical & Conceptual

A verrucous plaque on the lower leg

…rst developed as a verrucous nodule close to the lateral part of the ankle and gradually enlarged, involving the entire lower leg. Clinical examination revealed a verrucous plaque with an elevated border and central areas of atrophy and scar formatio…

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 papule…

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 papule…

Differential Diagnosis in Dermatopathology

Discussions

…lupus erythematosus in which the epidermal 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 sider…

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 papule…

Differential Diagnosis in Dermatopathology

Discussions

…th leukocytoclastic vasculitis. In truth, there are a variety 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-Ha…

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 papule…

Differential Diagnosis in Dermatopathology

Images

Lichenoid purpura (of Gougerot and Blum) Mycosis fungoides (plaque stage)…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

Lichenoid purpura (of Gougerot and Blum) Mycosis fungoides (plaque stage) 1. Epidermis usually normal or slightly acanthotic 1. Epidermis often psoriasiform 2. No lymphocytes disposed as solitary units in the epidermal basal layer 2. Lymphocytes of…