Search Results for: eosinophils

Histologic Diagnosis of Inflammatory Skin Diseases

Parasitic infestations

…utheast Asia. Findings histopathologic are similar to those of insect “bites” and cutaneous larva migrans, i.e., eosinophils usually are present in abundance. Filariasis is caused by filarial worms and is transmitted to humans by…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…dermis 6. Marked edema of the papillary dermis 7. Perivascular mixed-cell infiltrate of lymphocytes, neutrophils, and a few eosinophils 7. Perivascular mixed-cell infiltrate of lymphocytes and numerous eosinophils; neutrophils and plasma cells…

Histologic Diagnosis of Inflammatory Skin Diseases

Xanthogranuloma

…Fibroplasia amidst the dense diffuse infiltrate of foam cells Patchy mixed-cell infiltrate of lymphocytes, plasma cells, and eosinophils Correlation clinicopathologic Papules and nodules are expressions of dense diffuse infiltrates of histiocytes…

Histologic Diagnosis of Inflammatory Skin Diseases

Urticaria pigmentosa

…Urtication results from degranulation of mast cells. Those granules release eosinophilic chemotactic factor that calls forth eosinophils from blood that streams through vessels in the lesions. Histamine released from mast cells is responsible for…

Histologic Diagnosis of Inflammatory Skin Diseases

Subcutaneous Fat: Panniculitis

….392 A&B. A distinctive mostly lobular panniculitis: “insect bite.” The patchy infiltrate of lymphocytes and eosinophils in the subcutaneous fat, like that in the dermis, is typical of a response to an assault by an arthropod. The…

Histologic Diagnosis of Inflammatory Skin Diseases

Prurigo pigmentosa

…as well as superficial, and in the form of a wedge, the inflammatory cells being lymphocytes. Erythema multiforme: No or few eosinophils in the dermis and no neutrophils in either the dermis or the epidermis. Necrosis of keratocytes may cut a swath…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…ffuse dermatitis, granulomatous + 10.114.2B: Foamy histiocytes, some of them multinucleate, and a sprinkling of lymphocytes, eosinophils, and neutrophils = Xanthogranuloma, fully developed Early in its course, xanthogranuloma consists of a…