Eccrine porocarcinoma (EPC) constitutes a rare malignant adnexal tumor, which accounts
for about 0.005–0.01% of all cutaneous malignancies. It may develop de novo or arise from …

MANs are rare tumors, but due to the aging of population their incidence is increasing. Their
clinical presentation is unspecific, which makes the diagnosis challenging. Histopathological …

Porocarcinoma is a rare malignant adnexal tumor. Little is known about the location of the
disease in the head and neck. Our aim is to offer the largest analysis of demographic …

Spiradenomas are rare skin adnexal tumors, usually benign, appearing in early adulthood.
The etiology of this tumor is still debated. The tumor suppressor gene CYLD, responsible for …

Primary cutaneous cribriform apocrine carcinoma (PCCAC) is an exceedingly rare sweat
gland carcinoma. Clinically, it most often presents as a singular, asymptomatic nodule or …

Aim of the report: Brooke–Spiegler syndrome (BSS) is a rare autosomal dominant disease
characterized by the growth of cylindromas, spiradenomas, trichoepitheliomas, or their …

Nodular hidradenoma is a cutaneous adnexal tumor of sweat gland origin, characterized by
its diverse but overlapping histomorphologic features with other skin tumors. In addition …

Hidradenocarcinomas are rare cutaneous adnexal malignancies with sweat gland
differentiation that can show a broad spectrum of histomorphologic appearances, ranging …

Porocarcinoma (PC) is a rare adnexal tumor, mainly found in the elderly. The tumor arises
from the acrosyringium of eccrine sweat glands. The risk of lymph node and distant …

Adnexal cancers of the skin constitute a heterogeneous group of malignant tumors with
specific pathologic and biological differences. This review aims to provide clinicians with a …