Search Results for: lichenoid

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…

Histologic Diagnosis of Inflammatory Skin Diseases

Algorithms Predicated on “Nonspecific” Findings

…acanthosis = Lichen planus + Focal parakeratosis, focal hypergranulosis, lymphocytes along the dermoepidermal interface, and lichenoid infiltrate of lymphocytes = Lichen planus-like drug eruption + Remnant of solar lentigo/seborrheic keratosis and…

Histologic Diagnosis of Inflammatory Skin Diseases

Lichen planus-like keratosis

…ed on sites exposed to sunlight. Bibliography Bibliography for lichen planus-like keratosis Berger TG, Graham JH, Goette DK. Lichenoid benign keratosis. J Am Acad Dermatol 1984;11:635-38. Frigy AF, Cooper PH. Benign lichen keratosis. Am J Clin…

Differential Diagnosis in Dermatopathology

Discussions

…llagen, as well as by infiltrate of lymphocytes, but no siderophages are visualizable; hardly ever are melanophages noted in lichenoid purpura. The lichenoid purpura of Gougerot-Blum is one of three variants histopathologic of persistent purpuric…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…three patterns being present here. Perifolliculitis is common in lichen striatus. 10.61.5A: Perivascular dermatitis, patchy lichenoid, and peri-infundibulitis, lichenoid + 10.61.5B: Predominance of lymphocytes = Lichen striatus Because a lesion of…

Histologic Diagnosis of Inflammatory Skin Diseases

Errors and Reasons

…Degos” disease), which, in most persons who bear it, also is a manifestation of lupus erythematosus. Error: Pityriasis lichenoides et varioliformis acuta and pityriasis lichenoides chronica are different diseases with similar names. Reason:…

Histologic Diagnosis of Inflammatory Skin Diseases

Lichen striatus

…ocytes predominate includes a plaque of mycosis fungoides. Unlike lichen striatus, however, that disease is not a spongiotic lichenoid dermatitis, but is a spongiotic lichenoid dermatosis, i.e., a lymphoma. Although necrotic keratocytes may be…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…particular changes, pictured, are invariable at the dermoepidermal junction. 10.63.37A: Perivascular dermatitis, interface, lichenoid + 10.63.37B: Obscuration of the dermoepidermal junction by lymphocytes and vacuolar alteration in company with a…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…oped Predominance of histiocytes in the center of this infiltrate qualifies it as granulomatous. The discrete nature of this lichenoid granulomatous process makes this lichen nitidus. 10.59.3A: Perivascular dermatitis, interface, focally lichenoid +…