What is hidradenoma?

What is hidradenoma?

Hidradenoma is a relatively rare tumor of sweat gland origin. Although traditionally regarded as displaying eccrine differentiation, it is now accepted that tumors can show either eccrine or apocrine differentiation. [1,2] This tumor found mainly in adults, and is excised more commonly in women than in men.

Can Hidradenoma become malignant?

Nodular hidradenoma (NH) is a benign adnexal tumor that arises from the distal excretory duct of eccrine or apocrine sweat glands [1]. Despite its well-defined histological features of benignity, long-standing NH has been reported to undergo malignant transformation to malignant NH (MNH) [2].

What is a Hidradenoma Papilliferum?

Hidradenoma papilliferum is a rare benign tumor of apocrine glands. It usually presents as an asymptomatic flesh-colored nodule in the anogenital area of women.[1] A 32-year-old female patient presented with an asymptomatic nodule of 4 months duration in the vulva.

What is a nodular Hidradenoma?

Nodular hidradenoma (NH) is a benign adnexal tumor that arises from either eccrine or apocrine sweat glands. NH can originate from any cutaneous site, but the most common sites are the head and anterior surface of the trunk, with very rare cases in the extremities.

What is a Cylindroma?

Cylindromas are appendage tumors previously thought to be of apocrine differentiation. While phenotypic features differ between cylindromas and spiradenomas, recent studies have shown immunohistological and cytomorphological overlap, with both tumors exhibiting apocrine, eccrine, secretory, and ductal features.

Is a poroma benign?

Poroma is a benign tumor, mostly asymptomatic, and the prognosis is usually good. Patient education regarding malignant transformation, i.e., porocarcinoma is not necessary because its risk is similar to normal skin.

What causes Hidradenoma Papilliferum?

Hidradenoma papilliferum, also called papillary hidradenoma, is benign tumour arising from apocrine glands (see sweat gland lesions). The lesion is a small solitary dermal or subcutaneous nodule, most commonly on the vulva.

What is eccrine Acrospiroma?

Eccrine acrospiroma are benign skin tumours of sweat duct origin. They usually present as small solid or cystic lesions which are confused clinically with other solid or cystic lesions. These are generally benign lesions with few reports of malignant transformation.

How are cystadenomas different from other cystic lesions of liver?

The histological features which help in differentiating the cystadenomas from other cystic lesions of liver are the columnar epithelium, papillary infoldings, mesenchymal or ovarian like stroma [2].

What kind of pathology is used for hidradenoma?

PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/skintumornonmelanocyticeccrineacrospiroma.html. Accessed July 14th, 2021. Also known as nodular hidradenoma, eccrine acrospiroma, clear cell hidradenoma, eccrine sweat gland adenoma, solid cystic hidradenoma and clear cell myoepithelioma

How is the diagnosis of Biliary cystadenoma made?

In view of nonspecific clinicoradiological features, histopathological examination of the cyst forms mainstay for specific diagnosis of biliary cystadenoma. Differentiation of biliary cystadenomas from other cystic lesions of liver is crucial for management and follow up of the patients.

How big is the cystic nodule in hidrocystoma?

Despite its apocrine derivation, rare at sites rich in normal apocrine glands (groin, axilla, anogenital region, eyelids [Moll’s glands], ears [ceruminous glands]) Presents as intradermal, moderately firm, dome-shaped, translucent, blue, bluish-black or purple cystic nodule up to 1 cm