What are skin adnexal structures?

What are skin adnexal structures?

An abnormality of the skin adnexa (skin appendages), which are specialized skin structures located within the dermis and focally within the subcutaneous fatty tissue, comprising three histologically distinct structures: (1) the pilosebaceous unit (hair follicle and sebaceous glands); (2) the eccrine sweat glands; and ( …

What is benign adnexal tumor?

Adnexal tumors are growths that form on the organs and connective tissues around the uterus. Adnexal tumors are most often noncancerous (benign), but they can be cancerous (malignant). Adnexal tumors occur in the: Ovaries. Fallopian tubes.

What is adnexal skin cancer?

Cutaneous adnexal tumors are a large group of benign and malignant neoplasms that exhibit morphologic differentiation towards one of the four primary adnexal structures present in normal skin: hair follicles, sebaceous glands, apocrine glands, and eccrine glands [1,2].

What are the 5 appendages?

Skin appendage includes:

• Nails.
• Hair follicles.
• Glands. Sebaceous glands. Sweat glands (apocrine sweat glands and eccrine sweat glands)

Do adnexal masses need to be removed?

Most adnexal tumors are benign (noncancerous), but they can be malignant (cancerous). Many adnexal masses go away on their own, but some require treatment, which may include surgery.

What causes adnexal carcinoma?

There are two suspected risk factors for microcystic adnexal carcinoma: Unprotected sun exposure. Previous radiation therapy.

How bad is Microcystic adnexal carcinoma?

Though microcystic adnexal carcinomas frequently grow into and disturb nearby tissues and is therefore considered an invasive cancer, this type of tumor rarely spreads to more distant parts of the body (metastasizes).

What are Trichoepitheliomas?

Trichoepithelioma is a rare benign skin lesion that originates from hair follicles. Trichoepitheliomas are mostly seen in the scalp, nose, forehead, and upper lip. These skin lesions originate from benign proliferation of epithelial-mesenchymal origin cells.

What is a Fibrofolliculoma?

Listen to pronunciation. (FY-broh-fuh-LIH-kyoo-LOH-muh) A benign tumor of the hair follicle that appears as a small, whitish papule. Fibrofolliculomas are typically found on the face, ears, neck, and upper torso.