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Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Palpable Purpura?

…n the papillary dermis and often in the epidermis itself. The lichenoid purpura of Gougerot and Blum (lichen aureus), at an early stage of its course chronologic, consists entirely of purpuric papules. Those papules are fashioned of lichenoid infiltr…

Differential Diagnosis in Dermatopathology

Discussions

…ssions of graft-versus-host disease. Another manifestation is lichenoid papules that histopathologically resemble closely lesions of lichen planus. If the process of graft-versus-host disease persists, lesions that are nearly indistinguishable morpho…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…ss bacteria stained by hematoxylin and eosin. 10.57.3A: Lichenoid and nodular dermatitis, granulomatous + 10.57.3B: Lymphocytes among dense infiltrate of histiocytes with finely granular cytoplasm + 10.57.3C + 10.57.3D = Lepros…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Capillaritis?

…purpuric dermatitides, to wit, Schamberg’s disease, the lichenoid purpura of Gougerot and Blum (lichen aureus), and the eczematid-like purpura of Doucas and Kapetanakis. Two serious problems are inherent in the concept of capillaritis as it rel…

Histologic Diagnosis of Inflammatory Skin Diseases

Collagen

…and pyoderma gangrenosum; and those typified by long-standing lichenoid infiltrates of lymphocytes, such as lichen planus, disseminated superficial actinic porokeratosis, and some examples of the lichenoid purpura of Gougerot and Blum (and the neopla…

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