Search Results for: lichenoid

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…h it. It must be appreciated that this seborrheic keratosis began as what is known as a solar lentigo that, when joined by a lichenoid infiltrate of lymphocytes, is dubbed lichen planus-like keratosis. 11.11.7A: Perivascular dermatosis, lichenoid +…

Histologic Diagnosis of Inflammatory Skin Diseases

Persistent pigmented purpuric dermatitis

…dermal junction, and melanophages rather than siderophages. Mycosis fungoides manifested as plaques may be misinterpreted as lichenoid purpura because of lichenoid infiltrates of lymphocytes, altered bundles of collagen in a thickened papillary…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…d papillary dermis = Lichenoid purpura of Gougerot-Blum, fully developed The dermoepidermal junction is nearly spared by the lichenoid infiltrate of lymphocytes, a finding common in the lichenoid purpura of Gougerot-Blum. Sometimes, the infiltrate…

Histologic Diagnosis of Inflammatory Skin Diseases

Applicable Terms

…hickened by it. Nearly always, lichenoid infiltrates of an inflammatory process consist of lymphocytes, as in lichen planus, lichenoid discoid lupus erythematosus, and lichenoid purpura of Gougerot and Blum. Lymphocytes of a neoplastic process, to…

Histologic Diagnosis of Inflammatory Skin Diseases

Drug eruptions

…ermatitis, of a drug being causative. All the changes just mentioned may not be present together in a particular lesion of a lichenoid drug eruption, but most lichenoid drug eruptions harbor at least one of them. If many eosinophils are noted in a…

Differential Diagnosis in Dermatopathology

Discussions

…n planus clinically and histopathologically, among them lichen planus-like keratosis, lichenoid discoid lupus erythematosus, lichenoid photodermatitis, lichenoid secondary syphilis, and lichenoid drug eruptions. Of all the drug eruptions that…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Keratosis Lichenoides Chronica?

…recorded multiple myeloma diagnosed a few years before. The long-standing dermatosis was diagnosed, clinically, as keratosis lichenoides chronica (KLC), although, histologically, a lichenoid tissue reaction pattern was not evident.” Marzano…

Histologic Diagnosis of Inflammatory Skin Diseases

Syphilis

…hat reason, secondary syphilis can be differentiated from all lichenoid dermatitides in which lymphocytes predominate, e.g., lichenoid drug eruptions, lichenoid photodermatitis, and lichenoid discoid lupus erythematosus. In some lesions of secondary…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…he cells in the infiltrate being too pale. The two most common patterns of secondary syphilis at a stage developed fully are lichenoid, such as pictured here, and psoriasiform lichenoid. Lymphocytes do not predominate in secondary syphilis; plasma…