Search Results for: cysts

Histologic Diagnosis of Inflammatory Skin Diseases

"Folliculitis" (Infundibulitis)

…ally, is not accompanied by comedones, but often is joined by firm papules, and on the nose by a combination of infundibular cysts and sebaceous hyperplasia (rhinophyma). Pyoderma gangrenosum often starts out as suppurative infundibulitis and…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…le infiltrate of lymphocytes and plasma cells 9. Comedones and milia present often 9. No comedones or milia 10. Infundibular cysts and sinus tracts may be accompaniments 10. No infundibular cysts or sinus tracts 11. Telangiectasias not remarkable…

Differential Diagnosis in Dermatopathology

Discussions

…sential, elements for diagnosis of it. There also may be papules, pustules, and nodules the latter representing infundibular cysts which, on rupture, became inflamed. When the inflammatory process is florid, it may eventuate, in years, in pitted or…

Differential Diagnosis in Dermatopathology

Dilated pore vs. Pilar sheath acanthoma

…aceous units, especially infundibula, that may manifest itself solely as noninflammatory lesions, i.e., comedones and intact cysts, or as inflammatory lesions, i.e., papules, nodules, and pustules. The process may resolve without residua or with…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Tricho-, pilo-, folliculo- ?

…ted either to hairs or to the so-called hair disk (Haarscheibe). If a student is to understand the real nature of follicular cysts, hamartomas, and neoplasms, it is essential that differences be appreciated between the names of those lesions, on one…

Histologic Diagnosis of Inflammatory Skin Diseases

Acquired epidermolysis bullosa

…mis situated beneath the subepidermal blister Fibrosis in the uppermost part of the dermis in some lesions Tiny infundibular cysts (milia) Correlation clinicopathologic A blister forms beneath the epidermis and, by electron microscopy, is seen to be…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…ising, therefore, that that secretion, in addition to squames and hairs, is encountered in the vicinity of some infundibular cysts that have ruptured. 10.38.9A: Nodular dermatitis, granulomatous + 10.38.9B: Histiocytes, many of them multinucleate,…

Differential Diagnosis in Dermatopathology

Discussions

…in metastatic adenocarcinoma, often show comma-like extensions that have been compared to the shape of a tadpole. Cornifying cysts and calcification are common features of syringoma, but not, as a rule, of metastases from carcinoma. Clinically,…

Rongioletti F, Smoller BR (eds). Clinical and Pathological Aspects of Skin Diseases in Endocrine, Metabolic, Nutritional and Deposition Disease. New York: Springer; 2010

Rongioletti F, Smoller BR (eds). Clinical and Pathological Aspects of Skin Diseases in Endocrine, Metabolic, Nutritional and Deposition Disease. New York: Springer; 2010

…the text. Some involve differentiating certain disorders: for example, acne secondary to hypercorticism lacks comedones and cysts (unlike acne vulgaris), siderosis around eccrine glands may be specific for idiopathic hemochromatosis, and the linear…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Primary and Secondary Lesions?

…. “Primary lesions: macules, patches, papules, nodules, vesicles, bullae, pustules, plaques, atrophic plaques, wheals, cysts. Secondary (modified) lesions: scales (desquamation), crusts (scabs), erosions, ulcers, fissures, excoriations.”…