Search Results for: dermatomyositis

Histologic Diagnosis of Inflammatory Skin Diseases

Ground Substance

…ecognizable in routine sections as basophilic, finely granular, stringy material. Mucin is increased strikingly in the reticular dermis of several inflammatory diseases, chief among them being lupus erythematosus and dermatomyositis diffusely, and…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Colors Stereotypical for Diseases Specific?

…bright red (e.g., psoriasis), tan-red (e.g., pityriasis rosea), orange-red (e.g., pityriasis rubra pilaris), blue-red (e.g., dermatomyositis), or brown-red (e.g., erythroderma of Sezary’s syndrome).” Lynch PJ. Principles of diagnosis….

Histologic Diagnosis of Inflammatory Skin Diseases

Scar

…rought into being by very different causes, for example, a fingernail or an acid for a scar, and the inflammatory process of dermatomyositis (poikilodermatomyositis) and the lymphomatous process of mycosis fungoides (poikiloderma vasculare…

Differential Diagnosis in Dermatopathology

Discussions

…be difficult, even impossible, to differentiate histopathologically between some lesions of discoid lupus erythematosus and dermatomyositis, both of which may sport a thickened epidermal basement membrane. Polymorphous light eruption is…

Histologic Diagnosis of Inflammatory Skin Diseases

Porphyria cutanea tarda

…se for the markedly thickened basement membrane that characterizes well-developed lesions of discoid lupus erythematosus and dermatomyositis. In addition to duplication of basal lamina, the homogeneous eosinophilic rims of porphyria cutanea tarda…

Differential Diagnosis in Dermatopathology

Lupus profundus vs. Morphea profundus

Lupus erythematosus (LE) is a multisystem autoimmune connective tissue disease that can have protean effects on the skin. In some patients only the skin is involved, while in others, life-threatening internal complications can arise, ranging from…

Differential Diagnosis in Dermatopathology

Lichen planus vs. Lichenoid discoid lupus erythematosus

Lupus erythematosus (LE) is a multisystem autoimmune connective tissue disease that can have protean effects on the skin. In some patients only the skin is involved, while in others, life-threatening internal complications can arise, ranging from…

Differential Diagnosis in Dermatopathology

Study By Disease

…fibrosarcoma protuberans (Quiz #724) Dermatofibrosarcoma protuberans (Quiz #884) Dermatofibrosarcoma protuberans (Quiz #885) Dermatomyositis (Quiz #252) Dermatophytosis (Quiz #119) Dermatophytosis (Quiz #701) Dermatophytosis, pustular (Quiz #178)…