Search Results for: vesicle

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…ullous” lichen planus  The tiny blister shown here is a vesicle, not a bulla, and it came into being by virtue of the process of lichen planus being accelerated greatly, analogous to the blister that forms in lupus erythematosus and the pustule…

Histologic Diagnosis of Inflammatory Skin Diseases

Study By Disease

…Telangiectasia macularis eruptiva perstans (Quiz #430) Tense vesicle in response to the “bite” directly of an insect (Quiz #218) Tinea versicolor (Quiz #198) Traumatic (factitious) ulcer (Quiz #889) Traumatic purpura and ulceration (Quiz…

Differential Diagnosis in Dermatopathology

Discussions

…ranes and nail units. Darier’s disease does not exhibit vesicles clinically or histopathologically. Prior to the use of retinoids, Darier’s disease was largely refractory to treatment. The term “keratosis follicularis” as a sy…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…. No edema noticeable in the papillary dermis 2. Subepidermal vesicle sometimes secondary to marked edema of the papillary dermis 2. No subepidermal vesiculation 3. Many erythrocytes extravasated in the upper part of the dermis commonly 3. Few, if an…

Differential Diagnosis in Dermatopathology

Discussions

…a of the papillary dermis, and a central tense intraepidermal vesicle. The changes in the dermis just described are encountered in an urticarial response to assaults by arthropods. There are few, if any, alterations in the epidermis of those lesions….

Histologic Diagnosis of Inflammatory Skin Diseases

Fixed drug eruption

…extensive, eventuates in subepidermal clefts and subepidermal vesicles Marked spongiosis and ballooning; if ballooning extensive sufficiently, reticular alteration and intraepidermal vesicles ensue Intraepidermal and subepidermal vesiculation may occ…

Differential Diagnosis in Dermatopathology

Insect "bite" vs. Lymphomatoid papulosis

…the acarus Sarcoptes scabiei and consisting of papules, papulovesicles, papulopustules, and vesicles, some arranged in linear or curvilinear tracks (burrows). Sometimes nodules are present, especially in the interdigital webs and on the genitalia, ni…

Differential Diagnosis in Dermatopathology

Discussions

…ntionally, is a burrow bounded often by a tiny intraepidermal vesicle at its far end, the site to which the female mite has advanced in the cornified layer. The infiltrate in a typical papule of scabies is like that of an insect “bite,” i…

Differential Diagnosis in Dermatopathology

Discussions

…hat share many findings histopathologic, e.g., intraepidermal vesicles surrounded by ballooned keratocytes, reticular alteration, and signs of necrosis of what originally were steel-gray nuclei. Viral inclusions are harbored in keratocytes of both di…