Search Results for: vesicle

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…mal vesiculation, a phenomenon that also may develop in that condition as a consequence of rupture of a tense intraepidermal vesicle. 10.58.4A: Vasculitis, small-vessel, neutrophilic + 10.58.4B: Neutrophils and nuclear “dust” of…

Histologic Diagnosis of Inflammatory Skin Diseases

Leukocytoclastic vasculitis

…of the papillary dermis and intraepidermal vesicles from a combination of spongiosis and ballooning. A tense intraepidermal vesicle may burst to become subepidermal. By the time vesicles have formed in an epidermis, signs of necrosis usually have…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…is that in foci is hypergranulotic and hyperkeratosis = “Bullous” 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…

Histologic Diagnosis of Inflammatory Skin Diseases

Study By Disease

…iz #540) Telangiectasia macularis eruptiva perstans (Quiz #420) Telangiectasia macularis eruptiva perstans (Quiz #430) Tense vesicle in response to the “bite” directly of an insect (Quiz #218) Tinea versicolor (Quiz #198) Traumatic…

Differential Diagnosis in Dermatopathology

Discussions

…mall papules are keratotic, lesions of Grover’s disease are smooth-surfaced papules and, much less often, subtle papulovesicles. They have a predilection for the V of the chest, trunk, flanks, and thighs. Mucous membranes and nail units are…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…ault Urtica 1. Marked edema of the papillary dermis sometimes 1. 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…

Differential Diagnosis in Dermatopathology

Discussions

…es and eosinophils, scatter of eosinophils interstitially, edema 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…

Histologic Diagnosis of Inflammatory Skin Diseases

Fixed drug eruption

…mal vesicles Marked spongiosis and ballooning; if ballooning extensive sufficiently, reticular alteration and intraepidermal vesicles ensue Intraepidermal and subepidermal vesiculation may occur together Lymphocytes in association with neutrophils…

Differential Diagnosis in Dermatopathology

Insect "bite" vs. Lymphomatoid papulosis

…tory disease of older people; signs include widespread erythematous macules and patches, urticarial papules and plaques, and vesicles and bullae, the blisters often arising on urticarial plaques. Sometimes lesions are localized, e.g., to the legs….

Differential Diagnosis in Dermatopathology

Discussions

…dense, superficial and deep, perivascular and interstitial, and comprised mostly of lymphocytes and eosinophils. Spongiotic vesicles may develop in the epidermis. A nodule of scabies is different, clinically and histopathologically, from a papule…