Search Results for: cysts

Dermatology Practical & Conceptual

Pigmented tumor in the nostril

…downward epithelial proliferation containing occasional horn cysts, which consists of two cell types, basal cells located in the periphery and malpighian cells in the center. These structures are named “squamous eddies.” Generally, the b…

Histologic Diagnosis of Inflammatory Skin Diseases

Applicable Terms

…pemphigoid. Most milia, however, represent tiny infundibular cysts. Columns of parakeratosis known as cornoid lamellae emanate at times from infundibula of several “types” of porokeratosis, just as they do in those same types from surfac…

Histologic Diagnosis of Inflammatory Skin Diseases

Acne vulgaris

…unk Individual lesions Comedones, papules, pustules, nodules, cysts, scars Course Usually subsides after puberty but, occasionally, persists for decades Variations clinical 1. Comedonal, papular, pustular, and cystic acne: Any of these types of lesio…

Histologic Diagnosis of Inflammatory Skin Diseases

Subcutaneous Fat: Panniculitis

…s of adipocytes. A. Granular fat necrosis. B. Fat “microcysts.” C. Membranous fat necrosis. D. Foamy histiocytes (foam cells, lipophages). E. Calcification in the subcutaneous fat. Granular fat necrosis (complete loss of outlines of adipo…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…is 10. Cornification of neoplastic trichoblasts (i.e., “cysts” that contain corneocytes) common 10. “Cysts” that contain corneocytes uncommon 11. Foreign-body granulomas common around cornified cells from ruptured “cysts

Histologic Diagnosis of Inflammatory Skin Diseases


…sebocytes in sebaceous glands and development of infundibular cysts that rupture and induce thereby granulomatous and fibrosing inflammation; metaphyma is an analogue of rhinophyma on the face, usually the forehead, of a patient with rosacea. Periora…