Search Results for: fibrin

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…phils in the upper part of the dermis = Crohn’s disease This fundamentally small-vessel vasculitis is characterized by fibrin in the wall of venules and thrombi in lumen of them. In addition, there are signs of suppuration, ulceration, and…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…ls + 11.1.1B: Throughout the reticular dermis, an increased number of thick-walled venules lined by plump endothelial cells, fibrin in the wall of some venules, extravasated erythrocytes, and numerous siderophages + 11.1.1C + 11.1.1D =…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…ften preserved 5. Neutrophils in collections, nuclear “dust of neutrophils,” basophilia of collagen bundles, and fibrin at the tip of dermal papillae are present beneath and at the sides of a blister 5. No neutrophils, basophilia of…

Differential Diagnosis in Dermatopathology

Discussions

Dermatitis herpetiformis and bullous pemphigoid share several findings, namely, subepidermal vesiculation, fibrin in subepidermal spaces, and a mix of inflammatory cells, among them lymphocytes and some neutrophils and eosinophils. The changes…

Histologic Diagnosis of Inflammatory Skin Diseases

Limitations of the Algorithmic Method

…utrophilic vasculitis” in which many vessels in a particular section of tissue show signs of vasculitis in the form of fibrin in the wall of venules or thrombi in the lumen of them, never is that the case for “lymphocytic…

Histologic Diagnosis of Inflammatory Skin Diseases

Disseminated intravascular coagulopathy

…f fibrinogen, platelets, prothrombin, and other factors of coagulation are notable, as well as is elevated split products of fibrin. Cause and mechanism The cause is activation of the coagulation process with consumption of fibrin, platelets, and…

Histologic Diagnosis of Inflammatory Skin Diseases

Persistent pigmented purpuric dermatitis

…e), spongiotic (Doucas and Kapetanakis), and lichenoid (Gougerot-Blum) dermatitis. They do not qualify as vasculitis because fibrin is not present in the wall of venules and thrombi are not found in the lumen of them. Bibliography Bibliography for…