Search Results for: hyperplasia

Histologic Diagnosis of Inflammatory Skin Diseases

Confusing Terms (to be Avoided Scrupulously)

…e concept of hyperplasia is flawed irreparably and for several reasons. For one, the stimulus responsible for most so-called hyperplasias has yet to be identified, for example, the psoriasiform “hyperplasia” of fully formed psoriasis or…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Dysplasia?

…. The five criteria advocated by Clark et al. for recognition of dysplastic nevi, namely, persistent lentiginous melanocytic hyperplasia, atypical melanocytic hyperplasia, lamellar fibroplasia, concentric fibroplasias, and lymphocytic infiltrates,…

Differential Diagnosis in Dermatopathology

Discussions

…etheless, on grounds cytopathologic alone, the two are very different. Nuclei of abnormal endothelial cells of angiolymphoid hyperplasia are large and monomorphic, whereas those of angiosarcoma are small and pleomorphic. Search Derm101.com for…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Verruciform Xanthoma?

…xanthoma must be differentiated from verruca vulgaris, condyloma acuminatum, granular cell tumor with pseudoepitheliomatous hyperplasia, and verrucous carcinoma. . . . Despite the lack of intraepithelial inclusion or pronounced vacuolation, a viral…

Differential Diagnosis in Dermatopathology

Discussions

…l sebaceous carcinoma termed wrong in all textbooks of dermatology and dermatopathology “sebaceous adenoma”, the hyperplasia being symmetrical and the carcinoma asymmetrical. Sebaceous hyperplasia is a caricature of a normal sebaceous…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Lentigo Maligna?

…it “Hutchinson’s melanotic freckle”; Sagebiel, in the 1970s, referred to it as “atypical melanocytic hyperplasia”; and Reed, in the 1980s, deemed it to be “melanocytic dysplasia.” As the various titles…

Spitz and Reed nevi: acquired or congenital?

Spitz and Reed nevi: acquired or congenital?

…wever, as occasionally found in other congenital nevi, may only rarely be seen [40]. The prominent epidermal or infundibular hyperplasia together with a possible adnexotropism (in particular, syringotropism), neurotropism or myotropism suggests…