What is an acanthoma?
An acanthoma is a small, reddish bump that usually develops on the skin of an older adult. There are several types of acanthoma, including “acantholytic”, “epidermolytic”, “clear cell “, and “melanoacanthoma”.
What does acanthoma look like?
Large cell acanthoma occurs as a sharply demarcated, scaly, often lightly pigmented patch, approximately 3 to 10 mm in diameter, on the sun-exposed skin of middle-aged and elderly individuals. Conjunctival lesions have been reported. It is usually solitary. Clinically, it resembles a seborrheic or actinic keratosis.
What is 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.
What is another name for keratoacanthoma?
A solitary keratoacanthoma (also known as “Subungual keratoacanthoma”) is a benign, but rapidly growing, locally aggressive tumor which sometimes occur in the nail apparatus.
Is acanthoma cancerous?
Clear cell acanthoma is a rare benign (non-cancerous) epithelial skin tumour. It is usually a solitary lesion appearing on the lower legs but there have been cases of multiple lesions occurring.
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.
How do you treat clear cell Acanthoma?
Because of this, the most common treatment for Clear Cell Acanthoma is excision (cutting off the lesion). During an excision, you will receive a local anesthetic to numb the skin around the lesion. The entire lesion will be surgically removed with a scalpel, often with a few mm of surrounding skin.
Is Acanthoma cancerous?
What causes clear cell Acanthoma?
The primary differential diagnoses for clear cell acanthoma include pyogenic granuloma, benign lichenoid keratosis, inflamed seborrheic keratosis, eccrine poroma, basal cell carcinoma, squamous cell carcinoma, amelanotic melanoma, and psoriasis.
Is keratoacanthoma a tumor?
Keratoacanthoma (KA) is a relatively common low-grade tumor that originates in the pilosebaceous glands and closely resembles squamous cell carcinoma (SCC). In fact, strong arguments support classifying keratoacanthoma as a variant of invasive SCC.
Is keratoacanthoma benign or malignant?
Keratoacanthoma (KA) is a self-limiting benign epithelial neoplasm. It occurs predominantly on sun-exposed areas of the body and is believed to arise from hair follicle. It shows a unique behavior in being clinically benign and microscopically malignant.
What is a large cell Acanthoma?