Search Results for: fibrin

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Resolving Quandaries in Dermatology, Pathology & Dermatopathology

-oid?

…as a hedge against commitment to a term more specific, e.g., fibrinoid instead of fibrin, nevoid rather than nevus, and “oid-oid disease” in lieu of exudative discoid and lichenoid chronic dermatosis (which is a circumlocution for and ev…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Perivasculitis?

…in, when developed fully, is characterized by the presence of fibrin in the wall of vessels, thrombi in the lumen of vessels, or both together in the context of an infiltrate of inflammatory cells. The definition of vasculitis of small vessels in ski…

Histologic Diagnosis of Inflammatory Skin Diseases

Mucha-Habermann disease

…For one, Mucha-Habermann disease is not a vasculitis, because fibrin is not present in the wall of venules and thrombi are not found within the lumen of them. The presence rarely of fibrin in the wall of one or two vessels in the context of a perivas…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…lial cells sometimes protrude into the lumen of vessels 9. No fibrin around venules in the upper part of the dermis 9. Fibrin sometimes present around venules in the upper part of the dermis 10. Number of blood vessels in the reticular dermis seeming…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…ate histiocytes as a rule 7. Mucin, degenerated collagen, and fibrin in the center of palisades 7. No mucin, degenerated collagen, or fibrin in the center of palisades 8. Remnants of collagen preserved in zones replete with granular, stringy material…

Histologic Diagnosis of Inflammatory Skin Diseases

Pernio

…ermis Lymphocytes sprinkled along the dermoepidermal junction Fibrin sometimes in the wall of dermal venules and thrombi episodically in the lumen of them Mucin often increased in the reticular dermis Patchy infiltrates of lymphocytes in lobules of t…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Pernio, Perniosis, Lupus Pernio, Chilblain, and Chilblain Lupus?

…mis, lymphocytes sprinkled along the dermoepidermal junction, fibrin sometimes in the wall of a few dermal venules, and thrombi episodically in the lumen of those vessels. Patchy infiltrates of lymphocytes sometimes are present in lobules in the uppe…

Histologic Diagnosis of Inflammatory Skin Diseases

Lupus erythematosus

…1; of neutrophils in perivascular and interstitial locale. If fibrin is present in the wall of venules, the diagnosis is leukocytoclastic vasculitis, not lupus erythematosus or Sweet’s syndrome. If no fibrin is present, which is the rule in ver…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…rs, 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, lichenoid + 10.78.5B: Band-like infiltrate of lymphocytes in company wi…

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