Search Results for: leukocytoclasis

From the Dermatologikum Hamburg

From the Dermatologikum Hamburg

…factor [4]. Histopathologic changes have been described as a heavy dermal infiltrate of neutrophils with variable degrees of leukocytoclasis but no vasculitis [1,4]. Fibrinoid degeneration of collagen, resembling the collagen changes present in…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…itial dermatitis, and lobular panniculitis + 10.5.21B: Thrombi in the lumen of some small vessels, degeneration of collagen, leukocytoclasis, and confluent epidermal necrosis = Response to the “bite” of a spider This dermatitis in the…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Lymphocytic Vasculitis?

…d livedo. Leukocytoclastic vasculitis, by far the commonest of them, is characterized histopathologically by the presence of leukocytoclasis, that is, nuclear “dust” of neutrophils in company with intact neutrophils and, in lesions…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Mucha-Habermann Disease a Lymphocytic Vasculitis?

…cular damage is rarely found except in the severe febrile ulceronecrotic variant of PLEVA, where lymphocytic vasculitis with leukocytoclasis is a fairly common feature.” Mobini N, Toussaint S, Kamino H. Noninfectious erythematous, papular, and…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

Allergic (leukocytoclastic) vasculitis Septic vasculitis 1. Leukocytoclasis, i.e., nuclear “dust” of neutrophils invariable and abundant usually 1. No nuclear “dust” of neutrophils 2. Fibrin in and around the wall of…

Differential Diagnosis in Dermatopathology

Discussions

…21; of neutrophils is abundant in the dermis of allergic vasculitis and eosinophils often are conspicuous in it, but neither leukocytoclasis nor eosinophils is present in septic vasculitis; thrombi develop in septic vasculitis, but not in allergic…

Histologic Diagnosis of Inflammatory Skin Diseases

Erythema elevatum diutinum

…tinum (and its analogue, granuloma faciale) is distinctive, as is accompaniment of it by fragments of nuclei of neutrophils (leukocytoclasis). 10.58.23A: Fibrosing dermatitis + 10.58.23B: Thin bundles of collagen in fascicles that interweave and…