Search Results for: hyperkeratosis

Histologic Diagnosis of Inflammatory Skin Diseases

“Kyrle’s disease”

…hat condition (or conditions) he actually described as “hyperkeratosis follicularis et parafollicularis in cutem penetrans,” a title that in itself is daunting and dizzying. It is likely, however, that it was not “follicularis&#8221…

Histologic Diagnosis of Inflammatory Skin Diseases

Infundibulitis secondary to agents topical

…ibulitides brought about by other types of factors noninfectious is the presence, concurrent, of comedones. A major provocateur of infundibular hyperkeratosis, i.e., the innumerable corneocytes being the stuff comedones are made of, is machine oils….

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…10. No dull pink globules within the epidermis as a rule 11. Hyperkeratosis, hypergranulosis, and spinous-cell hyperplasia usual 11. Hyperkeratosis not prominent; no hypergranulosis usually; little epidermal hyperplasia 12. No evidence of regression…

Dermatology Practical & Conceptual

Waldenström macroglobulinaemia presenting as tingling ulcers on the feet

…cers on the sides of the feet [4].These developed in areas of hyperkeratosis and were associated with dysaesthesia and a burning sensation. However, the biopsy showed a leukocytoclastic vasculitis with a neutrophilic infiltrate. Storage papules were…

Differential Diagnosis in Dermatopathology

Pale-cell acanthoma vs. Psoriasis, plaque expression

A keratotic condition of the palms and soles, inherited usually, but sometimes acquired, in which involvement may be diffuse, circumscribed (including striate), or punctate.

Differential Diagnosis in Dermatopathology

Discussions

…ive patterns of epithelium in the skin, such as epidermolytic hyperkeratosis, focal acantholytic dyskeratosis, cornoid lamellation, and epithelial (follicular) mucinosis. When pale-cell acanthosis occurs in a seborrheic keratosis, for example, the le…

Differential Diagnosis in Dermatopathology

Discussions

…pillary dermis and the epidermis. Both conditions may display hyperkeratosis, epidermal hyperpigmentation, papillomatosis, melanophages, and an increased number of fibrocytes in a thickened pale-staining papillary dermis. Whereas nevus verrucosus is…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Chondrodermatitis Nodularis Helicis?

…of infundibular epidermis associated with hypergranulosis and hyperkeratosis of infundibula. When animated scratching or analogous trauma supervenes, an erosion or ulceration develops, which is covered by crust. Seated beneath an ulcer or at the base…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Cutaneous Horn?

…s, or a solar keratosis (or an acrokeratosis verruciformis, a hyperkeratosis lenticularis, a keratoacanthoma). Squamous papilloma describes the appearance histopathologic of any digitate or nipple-shaped proliferation of squamous epithelium; it is no…