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Differential Diagnosis in Dermatopathology

Discussions

…re present within an epithelium, examples being lichen planus, lichenoid discoid lupus erythematosus, lichenoid photodermatitis, and lichenoid gold dermatitis. In short, so-called satellite-cell necrosis is simply a necrotic keratocyte, analogous to…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

Images 10.57.1A: Nodular dermatitis and panniculitis, granulomatous + 10.57.1B: Lymphocytes among dense infiltrates of slightly foamy histiocytes, some of them having a bluish cast + 10.57.1C + 10.57.1D = Leprosy, lepromatous…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Capillaritis?

“Pigmented purpuric eruptions. Under this term, three diseases are listed. It is doubtful that the division is warranted, since the most recent studies would suggest that these three divisions are each a phase or type of chronic capillaritis…

Differential Diagnosis in Dermatopathology

Discussions

Distinction histopathologic between lichen planus-like keratosis and most solar keratosis is not difficult in some instances. When, however, a solar keratosis is accompanied by lichenoid infiltrates of lymphocytes, it may have many attributes in com…

Differential Diagnosis in Dermatopathology

Erythroderma of psoriasis vs. Erythroderma of mycosis fungoides

A condition in which deposits of a fibrillary protein (amyloid) appear in the skin as macules, papules, and nodules consequent to the effects of local factors, or as patches (which may be purpuric), plaques, nodules, and tumors as a result of a syst…

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