Is large cell Acanthoma malignant?

Is large cell Acanthoma malignant?

Large cell acanthoma is a relatively uncommon, benign neoplasm considered to be a subtype of solar lentigo or seborrheic keratosis. It typically presents as a scaly, tan macule or thin plaque on photodamaged skin, usually in elderly patients. Large cell acanthomas are characteristically solitary or few in number.

What causes Acanthoma?

The exact cause of acanthoma is not known; it is sometimes called a benign tumor , and sometimes described as the result of inflammation. Acanthomas are not considered dangerous and do not require treatment, but they may be removed for cosmetic reasons or to relieve any associated symptoms.

What is a clear cell Acanthoma?

Clear cell acanthoma is an uncommon type of benign epithelial tumor. Typically, it is a solitary lesion found on the lower limbs. It presents as a nodule or small plaque with slow and well-defined growth.

Which is the most common location for clear cell Acanthoma?

Although most commonly located on the lower extremities, clear cell acanthomas can also appear on the trunk, forearm, face, inguinal area, and few cases of nipple and areola lesions have been reported. Lesions are usually solitary; however, there are reports of rare cases of multiple disseminated clear cell acanthomas.

What is a Trichoepithelioma?

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 Trichofolliculoma?

Trichofolliculoma represents an uncommon hamartoma of hair follicle tissue, typically occurring on the face of adults. Clinical appearance of trichofolliculoma. The prognosis is excellent, and therapy is usually directed toward cosmetic improvement.

What is a poroma?

A poroma is a benign adnexal neoplasm composed of epithelial cells that show tubular (usually distal ductal) differentiation. The malignant counterpart of a poroma is referred to as porocarcinoma.