Neoplastic Process
seborrheic keratosis
Subclass of:
Keratosis
Definitions related to seborrheic keratosis:
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A common benign neoplasm usually affecting older individuals. The lesions usually arise in the trunk, head and neck, but they can occur on any skin surface other than the palms, soles, and mucosal surfaces. They appear as flat-based papules or plaques. Histologically, there is intraepidermal proliferation of basaloid keratinocytes, acanthosis, hyperkeratosis, and cysts formation.NCI ThesaurusU.S. National Cancer Institute, 2021
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A raised growth on the skin of older individuals. The lesion usually is initially light tan and may darken to dark brown or nearly black. The consistent feature of seborrheic keratoses is their waxy, pasted-on or stuck-on look.Human Phenotype Ontology (HPO)The Human Phenotype Ontology Project, 2021
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(keratosis, seborrheic) Benign eccrine poromas that present as multiple oval, brown-to-black plaques, located mostly on the chest and back. The age of onset is usually in the fourth or fifth decade.NLM Medical Subject HeadingsU.S. National Library of Medicine, 2021
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Seborrheic keratoses are superficial, often pigmented, epithelial lesions that are usually warty but may occur as smooth papules.Merck & Co., Inc., 2020
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Seborrheic keratoses are the most common benign tumor in older individuals. Seborrheic keratoses have a variety of clinical appearances, as seen in the images below, and they develop from the proliferation of epidermal cells.WebMD, 2019
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A seborrheic keratosis (seb-o-REE-ik ker-uh-TOE-sis) is a common noncancerous skin growth. People tend to get more of them as they get older.Mayo Foundation for Medical Education and Research
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Seborrheic keratosis is a benign (non cancerous) tumor found on the skin. Seborrheic keratoses are the most common benign tumor in older individuals. They usually appear as multiple small, flat or raised growths that range in color from white to black and are commonly found on the face, neck, chest, shoulders, and hands. They usually do...National Center for Advancing Translational Sciences
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Seborrheic keratosis is a common, multiple, benign skin tumor most commonly found on the torso and usually appears in the fourth and fifth decades of life. From 80% to 100% of people over the age of 50 years are affected. The lesions clinically appear as well-circumscribed gray-brown-to-black plaques with a "stuck-on" appearance. Later...Athenahealth, Inc., 2019
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