Search Results for: fibrin

Development of poorly differentiated invasive squamous cell carcinoma in giant Bowen’s disease: a case report with dermatoscopy

Development of poorly differentiated invasive squamous cell carcinoma in giant Bowen’s disease: a case report with dermatoscopy

…es and a vascular pattern, observed as large coiled vessels in linear arrangement intermingled with ulcerations and adherent fibrin crusts (Figure 2). Figure 2. Dermatoscopy of the central region. (A) Linear arrangement of coiled vessels becoming…

Histologic Diagnosis of Inflammatory Skin Diseases

Leprosy

…nt of nerve fascicles by granulomas (a consequence of neurotropism by leprae bacilli), and absence of caseous necrosis or of fibrin in the center of granulomas. In brief, a histopathologist may offer a diagnosis presumptive of tuberculoid leprosy,…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…f the persistent pigmented purpuric dermatitides, like the others, is a dermatitis and not a vasculitis. Note the absence of fibrin from the wall of vessels and of thrombi from the lumen of them. 10.78.5A: Perivascular dermatitis, interface,…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Necrotizing Vasculitis?

…nvolved cannot be necrotic because collagen is a nonviable fiber. In lesions of leukocytoclastic vasculitis developed fully, fibrin is present in the wall of venules, but those vessels themselves are not necrotic. Of course, occlusion of lumina in…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…fat and degenerated collagen sometimes 10. No calcification in the reticular dermis or the subcutaneous fat 11. Deposits of fibrin at the periphery of fat lobules 11. No deposits of fibrin at the periphery of lobules 12. Findings diagnostic of…

Histologic Diagnosis of Inflammatory Skin Diseases

Precepts Adjunctive to the Algorithmic Method

…; re-epithelialization beneath a subepidermal blister because it represents an anticipated physiologic response; deposits of fibrin beneath erosions and ulcerations because they are a consequence inevitably of whatever injury was responsible for…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…“bites” of insects and of mites of scabies, sometimes induce changes of small-vessel vasculitis as manifested by fibrin in the wall of venules, as shown here, thrombi in lumen of venules, or both of them together. 10.5.9A: Vesicular…

From the Dermatologikum Hamburg

From the Dermatologikum Hamburg

…he dermis and are dominated by far by neutrophils. Some nuclear dust of neutrophils is present but there is no deposition of fibrin in the vessel walls. Fibrosis is seen in the deeper dermis. In the absence of clinical information, the best…