Search Results for: fibrocytes

Differential Diagnosis in Dermatopathology

Discussions

…extend deep into the reticular dermis and, episodically, into the subcutaneous fat. As a consequence of the proliferation of fibrocytes and the accompanying fibroplasia, some normal folliculo-sebaceous units may be destroyed, but eccrine structures…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

-oid?

…ndothelial cells that are said to resemble histiocytes cytologically (but a tenet basic of histology holds that histiocytes, fibrocytes, and endothelial cells may be indistinguishable from one another morphologically). Furthermore, the appellation…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Nevus?

…entirely to one another. Moreover, the cells of a nevus, as the term is employed generally, may be melanocytes, keratocytes, fibrocytes, endothelial cells, or adipocytes. So-called nevus cells are abnormal melanocytes. To complicate the matter…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…Perivascular and interstitial dermatitis + 10.52.1B: Lymphocytes, plasma cells, neutrophils, and eosinophils in company with fibrocytes and histiocytes, the latter being predominant = Interstitial granulomatous dermatitis with arthritis Some…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…tous inflammation and fibrosis. 10.38.3A: Fibrosing dermatitis and panniculitis, septal + 10.38.3B: Increased number of thin fibrocytes, coarse bundles of collagen oriented parallel to the skin surface, and histiocytes, some of them multinucleate,…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Necrobiosis?

…ecrobiosis as necrosis of collagen, rather than as degeneration of that fibrous protein. Collagen is a fiber and, unlike the fibrocytes that produce it, cannot undergo necrosis; only viable cells can suffer necrosis. The tinctorial and structural…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Myxoma?

…cinosis, for example, it is mostly infundibular and sebaceous epithelium that produces mucin, whereas in pretibial myxedema, fibrocytes do it, presumably in concert with mast cells. Nonepithelial, or connective tissue, mucin is dominant in those…

Differential Diagnosis in Dermatopathology

Discussions

…than they are in findings histopathologic. In a sense, however, both are cutaneous mucinoses in which an increased number of fibrocytes and mast cells are present in zones that house acid mucopolysaccharides. Although pretibial myxedema may develop…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…in sections stained by hematoxylin and eosin 8. No clefts in globules of amyloid 8. Clefts in nodules of colloid 9. Stellate fibrocytes and melanophages associated intimately with globules of amyloid 9. A few thin fibrocytes associated with colloid,…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…ue Coarse bundles of collagen in random array are a consequence of the effects of longstanding infiltrates of lymphocytes on fibrocytes. Even in the absence of that change, the findings pictured are those of mycosis fungoides. 11.14.41A:…