Search Results for: volar

Histologic Diagnosis of Inflammatory Skin Diseases

Nerves

…3rd ed. Philadelphia: W.B. Saunders, 1992.) Meissner’s corpuscles (Fig. 1.84), lodged at the tip of dermal papillae on volar skin and most plentiful on fingertips, are thought to function as mechanoreceptors that adapt rapidly to the sensation…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…cant infiltrate of lymphocytes, brown hyphae, and brown spores in the vicinity immediate of spaces in the stratum corneum of volar skin +10.22.20C + 10.22.20D = Tinea nigra The spaces in the cornified layer of a palm or sole are a clue, visible at…

Histologic Diagnosis of Inflammatory Skin Diseases

Tinea nigra

…exus Spaces of various sizes and shapes in what seems at scanning magnification to be an otherwise normal cornified layer of volar skin Pigmented hyphae and spores in the stratum corneum, especially in the spaces themselves or in the vicinity…

Histologic Diagnosis of Inflammatory Skin Diseases

Xanthomas

…ly, the diagnosis is eruptive xanthoma. If foamy histiocytes are arranged in nodules and sheets in a dome-shaped lesion near volar skin poor in epithelial structures of adnexa, the diagnosis is xanthoma tuberosum. If foamy histiocytes are present…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

Images 11.15.1A: Vesicular dermatosis, subepidermal + 11.15.1B: Dermal papillae on volar skin preserved = Porphyria cutanea tarda Although venules and capillaries in the upper part of the dermis of porphyria cutanea tarda usually are rimmed by…

Histologic Diagnosis of Inflammatory Skin Diseases

Study By Disease

…#177) Psoriasis, pustular (Quiz #766) Psoriasis, scaly plaque expression (Quiz #69) Psoriasis, scaly plaque expression near volar skin (and keratotic plaque expression on volar skin itself) (Quiz #70) Purpura fulminans secondary to Coumadin…

Histologic Diagnosis of Inflammatory Skin Diseases

Psoriasis

…the epidermis. Lymphocytes precede neutrophils into the epidermis of an evolving lesion of psoriasis. In short, psoriasis on volar skin looks different from psoriasis on other anatomic sites (probably because of the restrictive character of the…

Histologic Diagnosis of Inflammatory Skin Diseases

Lichen planus

…the basic process pathologic of lichen planus. The lesions actually are vesicles, not bullae. Erosive lichen planus affects volar skin extensively by ulceration diffusely; mucous membranes often involved concurrently. Oral lichen planus of the…

Histologic Diagnosis of Inflammatory Skin Diseases

Pitted keratolysis

…infiltrate of lymphocytes Dells with uneven outlines on the surface of a thick compactly-arranged cornified layer typical of volar skin Clumps of bacteria, cocci or bacilli, some in filamentous form, in the cornified layer Differential diagnosis…