Seborrhoeic keratosis (American spelling - seborrheic keratosis) is also called SK, basal cell papilloma, senile wart, brown wart, wisdom wart, or barnacle. The descriptive term, benign keratosis, is a broader term that is used to include the following related scaly skin lesions :

2022年1月18日 · A seborrheic keratosis (seb-o-REE-ik ker-uh-TOE-sis) is a common noncancerous (benign) skin growth. People tend to get more of them as they get older. Seborrheic keratoses are usually brown, black or light tan. The growths (lesions) look waxy or scaly and slightly raised. They appear gradually, usually on the face, neck, chest or back.

2021年8月27日 · Seborrheic keratoses are roundish or oval-shaped patches on the skin with a “stuck on” appearance. They are sometimes described as waxy or scaly. They are raised above the skin and even when they are flat you can feel them with your finger. They are usually brown, but can also be black or tan, and less often, pink, yellow or white.

Dermoscopy is useful to distinguish pigmented non-melanocytic lesions from benign and malignant melanocytic lesions. There are specific features that help to distinguish seborrhoeic keratosis from basal cell carcinoma and melanoma.

A seborrheic keratosis is a non-cancerous skin tumour that originates from cells, namely keratinocytes, in the outer layer of the skin called the epidermis. Like liver spots , seborrheic keratoses are seen more often as people age.

2023年4月15日 · Seborrheic keratoses, or skin barnacles, are common, harmless skin growths seen in middle and older-aged adults. Learn what they look like and how they are diagnosed and treated.

2024年4月18日 · Seborrheic keratosis is a benign (noncancerous) condition that can look like a mole or wart. It's caused by a buildup of skin cells and can happen anywhere on your body, but often appears on the...

2025年1月31日 · Seborrhoeic keratoses (seb K), also known as seborrhoeic warts and basal cell papillomas, are benign (harmless) growths caused by a build-up of skin cells. They cannot turn into skin cancer. Seb K are extremely common ; almost everyone older than 50 has at least one, some people have many more.

Seborrhoeic keratosis is a well-demarcated exophytic, flat or, less commonly, endophytic lesion composed of a proliferation of epidermal keratinocytes. Seborrhoeic keratosis can be recognised by a papillomatous architecture, acanthosis, hyperkeratosis, and horn cysts. The hyperkeratosis produces a characteristic loose lamellar stratum corneum.

2017年5月28日 · Seborrheic keratoses are benign epithelial lesions that can appear on any part of the body except for the mucous membranes, palms, and soles. The lesions are quite prevalent in people older than 30 years. The etiology of seborrheic keratoses remains unclear.