Differential Diagnosis in Dermatopathology

Lichen planus vs. Lichen planus-like keratosis

Papules on skin and mucous membranes that result from infection of keratinocytes by different types of papillomavirus and classified according to their silhouettes, to wit, papillated (verrucae vulgares on different sites such as volar skin, i.e., v…

Differential Diagnosis in Dermatopathology

Allergic contact dermatitis vs. Irritant contact dermatitis

Papules on skin and mucous membranes that result from infection of keratinocytes by different types of papillomavirus and classified according to their silhouettes, to wit, papillated (verrucae vulgares on different sites such as volar skin, i.e., v…

Differential Diagnosis in Dermatopathology

Lichen simplex chronicus vs. Hypertrophic lichen planus

Papules on skin and mucous membranes that result from infection of keratinocytes by different types of papillomavirus and classified according to their silhouettes, to wit, papillated (verrucae vulgares on different sites such as volar skin, i.e., v…

Differential Diagnosis in Dermatopathology

Lichen amyloidosis vs. Colloid milium

Papules on skin and mucous membranes that result from infection of keratinocytes by different types of papillomavirus and classified according to their silhouettes, to wit, papillated (verrucae vulgares on different sites such as volar skin, i.e., v…

Differential Diagnosis in Dermatopathology

Discussions

…rete ridges and dermal papillae that is muted markedly, focal hypergranulosis, necrotic keratocytes at the dermoepidermal junction and in the uppermost dermis, vacuolar alteration at the dermoepidermal junction, a thickened epidermal basement membran…

Differential Diagnosis in Dermatopathology

Discussions

…rmoepidermal junction in the form of uneven acanthosis, focal hypergranulosis, a patchy lichenoid infiltrate of lymphocytes, and vacuolar alteration, those findings presumably being present at the edge of infundibular involvement by the process of li…

Differential Diagnosis in Dermatopathology

Discussions

…by extravasated erythrocytes at the tip of digitations, focal hypergranulosis, dilated tortuous capillaries in thin dermal papillae, collarettes of epithelium at the periphery of a lesion, some abnormal nuclei, an increased number of mitotic figures,…

Differential Diagnosis in Dermatopathology

Ichthyosis vulgaris vs. X-linked ichthyosis

Papules on skin and mucous membranes that result from infection of keratinocytes by different types of papillomavirus and classified according to their silhouettes, to wit, papillated (verrucae vulgares on different sites such as volar skin, i.e., v…

Differential Diagnosis in Dermatopathology

Epidermolytic hyperkeratosis vs. Plane wart

Papules on skin and mucous membranes that result from infection of keratinocytes by different types of papillomavirus and classified according to their silhouettes, to wit, papillated (verrucae vulgares on different sites such as volar skin, i.e., v…