seborrheic keratosis

keratosis

 [ker″ah-to´sis]

any horny growth, such as a wart or callosity.

actinic keratosis a sharply outlined wartlike or keratotic growth, which may develop into a cutaneous horn, and may become malignant; it usually occurs in the middle aged or elderly and is due to excessive exposure to the sun. Called also senile or solar keratosis. (See Atlas 3, Part F).

keratosis follicula´ris a slowly progressive autosomal dominant disorder of keratinization characterized by pinkish to tan or skin-colored papules on the seborrheic areas of the body that coalesce to form plaques, which may become crusted and secondarily infected; over time, the lesions may become darker and may fuse to form papillomatous and warty malodorous growths. Called also Darier's disease and Darier-White disease.

keratosis palma´ris et planta´ris palmoplantar keratoderma.

keratosis pharyn´gea horny projections from the tonsils and pharyngeal walls. Called also pharyngokeratosis.

keratosis pila´ris hyperkeratosis limited to the hair follicles.

keratosis puncta´ta a hereditary hyperkeratosis in which the lesions are localized in multiple points on the palms and soles.

seborrheic keratosis (keratosis seborrhe´ica) a benign, noninvasive tumor of epidermal origin, marked by numerous yellow or brown, sharply marginated, oval, raised lesions.

senile keratosis (solar keratosis) actinic keratosis.

Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

seb·or·rhe·ic ker·a·to·sis

, keratosis seborrheica

superficial, benign, verrucous, often pigmented, greasy lesions consisting of proliferating epidermal cells, resembling basal cells, enclosing horn cysts; they usually occur after the third decade.

Synonym(s): basal cell papilloma, seborrheic verruca

Farlex Partner Medical Dictionary © Farlex 2012

seborrheic keratosis

Senile keratosis Dermatology A benign, often numerous lesion of the face and upper trunk of older adults, which appear as wart-like growths in various colors; SKs may become irritated and itch because of friction from clothes. See Keratosis.

McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

seb·or·rhe·ic ker·a·to·sis

, keratosis seborrheica (seb'ōr-ē'ik ker'ă-tō'sis, seb-ōr-ē'i-kă)

1. A superficial, benign, verrucous, often pigmented, greasy lesion consisting of proliferating epidermal cells, resembling basal cells, enclosing horn cysts; usually occur after the third decade.

2. Synonym(s): senile keratosis. Synonym(s): seborrhoeic keratosis.

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

seb·or·rhe·ic ker·a·to·sis

, keratosis seborrheica (seb'ōr-ē'ik ker'ă-tō'sis, seb-ōr-ē'i-kă)

Superficial, benign, verrucous, often pigmented, greasy lesions consisting of proliferating epidermal cells, resembling basal cells, enclosing horn cysts; usually occur after the third decade.
Synonym(s): basal cell papilloma.

Medical Dictionary for the Dental Professions © Farlex 2012