Papillary poroid hidradenoma: a distinct histopathological entity a rare case report.

Poroid Hidradenoma in a 62-Year-Old Male: A Case Report

We present a case of poroid hidradenoma on the right chest in a 62year-old male with diabetes mellitus and chronic renal failure. Poroid hidradenoma is usually solitary and shows eccrine differentiation. There have been a small number of reports describing poroid hidradenoma, and the present case is a rare instance. Because the relations between clear cell neoplasms and diabetes mellitus are kn...

Poroid hidradenoma: a case report.

Poroid hidradenoma is a variant of the eccrine poroma that belongs to the group of poroid neoplasms. It presents architectural features of hidradenoma, with solid and cystic areas and tumour cells restricted to the dermis, and cytological features of poroid neoplasm such as poroid and cuticular cells. Poroid hidradenoma becomes malignant in less than 1% of cases, but its histologic characterist...

Papillary poroid hidradenoma.

A giant ectopic hidradenoma papilliferum in a Niger delta region of Nigeria

Hidradenoma papilliferum is a known example of adnexal skin tumours with apocrine differentiation. It is a rare benign tumour which tends to arise from areas with rich concentration of aporine glands such as anogenital region, vulval, perineal, axillae, and periumbilical areas. In this report, the tumour was found in the upper outer quadrant of left breast, being one of the ectopic sites for th...

A Large Lumbar Adnexal Neoplasm Presenting Characteristics of Eccrine Poroma and Poroid Hidradenoma

Poroma is a rare benign neoplasm that derives from eccrine sweat glands epithelium. Its histological subtypes, with respect to its position within skin layers, are eccrine poroma, hidroacanthoma simplex, poroid hidradenoma, and dermal duct tumor. Poromas commonly exhibit benign clinical behavior as they are usually small and asymptomatic and do not exhibit malignant behavior. Although their his...