Search Results for: vesicle

Histologic Diagnosis of Inflammatory Skin Diseases

Errors and Reasons

…ical (others being purpuric macules, purpuric and nonpurpuric vesicles, and ulcers), and, moreover, diseases unrelated to leukocytoclastic vasculitis (lichenoid purpura of Gougerot and Blum, the pityriasis lichenoides acuta expression of Mucha-Haberm…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…e spongiosis that, at times, leads to formation of spongiotic vesicles. Uncommonly, a blister in bullous pemphigoid is entirely intraepidermal. 10.10.2A: Perivascular dermatitis, interface, vacuolar, and spongiotic + 10.10.2B: Countless eosinophils i…

Histologic Diagnosis of Inflammatory Skin Diseases

Suction blister

…Suction blister Presentation stereotypical Individual lesions Vesicles and bullae Findings histopathologic Fully developed Subepidermal blister beneath which dermal papillae are preserved No infiltrate of inflammatory cells Correlation clinicopatholo…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…phils beneath the cornified layer at the side of a spongiotic vesicle. + 10.88.6C + 10.88.6D: = Prurigo pigmentosa  Vesicles in prurigo pigmentosa may come into being by virtue of extensive spongiosis, early in the process, or by ballooning later. Ne…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…interrupted by biopsy, the tension within the intraepidermal vesicle would have caused it to burst and to become subepidermal, too; only a single layer of basal keratocytes remains at the floor of the blister. Note the infiltrate of neutrophils most…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…cular alteration that are accompaniments of an intraepidermal vesicle. 10.99.3A: Vasculitis, small vessel, neutrophilic + 10.99.3B: Perivascular and interstitial mixed-cell infiltrate with thrombi in the lumen of venules = Septic vasculitis  The find…

Histologic Diagnosis of Inflammatory Skin Diseases

Pattern Analysis in Historical Perspective

…matitis” and because a pustule is very different from a vesicle, both morphologically and conceptually, “pustular dermatitis” now is given its due as a separate, but equal, fundamental pattern. Combining the two different sets of pa…