What is Hidroacanthoma simplex?

Hidroacanthoma simplex (HAS), also known as intraepidermal eccrine poroma, is a rare eccrine adnexal tumor that tends to be misdiagnosed as other types of benign skin tumor, including clonal seborrheic keratosis.

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.

What is dermal duct tumor?

It is believed to be a benign tumor of the intradermal portion of the eccrine sweat duct and is distinctive and diagnostic histologically. The spectrum of benign tumors of the eccrine sweat duct epithelium includes hidroacanthoma simplex or intraepidermal eccrine poroma, eccrine poroma, and dermal duct tumor.

What causes Porocarcinoma?

Factors that may increase the risk to develop an eccrine porocarcinoma include family history , suppression of the immune system , and exposure to ultraviolet light or radiation. Treatment usually involves surgery to remove the tumor.

What is 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.

Is eccrine poroma benign?

Eccrine poroma is a benign tumor which arises from the intraepidermal portion of the eccrine sweat glands. It usually occurs as a solitary lesion in the extremity, with the foot and sole as a common site. It may present as a foot mass, ulcerative lesion, bleeding lesion, or suspected melanoma.

What is Trichoblastoma?

Trichoblastoma is a rare, slow-growing, benign cutaneous tumor derived from follicular germinative cells. Trichoblastoma commonly appears as an asymptomatic, symmetrical, well-circumscribed, skin-colored to brown or blue-black papule or nodule.

What is a eccrine poroma?

Eccrine poroma is a benign tumor which arises from the intraepidermal portion of the eccrine sweat glands. It usually occurs as a solitary lesion in the extremity, with the foot and sole as a common site.

What is metastatic Porocarcinoma?

Porocarcinoma is a rare malignant neoplasm of the eccrine or apocrine gland that usually presents clinically as a firm erythematous to violaceous nodule or verrucous plaque ranging in size from 0.4 cm to 20.0 cm with an average of 2.2 cm (Figure 1). Lesions tend to ulcerate.

What are carcinoma cells?

Carcinoma is a type of cancer that starts in cells that make up the skin or the tissue lining organs, such as the liver or kidneys. Like other types of cancer, carcinomas are abnormal cells that divide without control. They are able to spread to other parts of the body, but don’t always.

Can adnexal mass cause pain?

However, an adnexal mass can cause symptoms in a few cases. These symptoms can include: pain in the pelvic region. irregular periods in women who are experiencing premenopause.

Are adnexal tumors malignant?

Adnexal tumors are most often noncancerous (benign), but they can be cancerous (malignant). Adnexal tumors occur in the: Ovaries. Fallopian tubes.

Is the hidroacanthoma simplex the same as Poroma?

We have included hidroacanthoma simplex and dermal duct tumor as synonymous with poroma since most authors consider these tumors similar both clinically and histologically with the same derivation simply found at different locations within the skin.

Which is the best description of A poroma?

Three forms are recognized: an intraepidermal form (hidroacanthoma simplex), a dermal form (dermal duct tumor), and a combined dermal-epidermal form (eccrine poroma). The lesions generally present as slightly raised or nodular lesions on the distal extremities.

Can A poroma transform into a hidradenoma?

Poromas may transform into porocarcinomas. Classically, hidradenoma is based in the dermis, but focal epidermal connections can be seen , mimicking a poroma. Some experts advocate the term acrospiroma for tumors, such as this, that show overlapping features of poroma and hidradenoma.

What are the different types of eccrine poromas?

Eccrine poromas are thought to recapitulate the intraepidermal portion of the eccrine coil (acrosyringium). Three forms are recognized: an intraepidermal form (hidroacanthoma simplex), a dermal form (dermal duct tumor), and a combined dermal-epidermal form (eccrine poroma).