Poroma is a benign adnexal neoplasm of the terminal sweat gland duct. Although poromas have traditionally been thought to originate from the eccrine sweat gland, there have been cases of apocrine etiology as well. Eccrine and apocrine poromas typically present as erythematous or flesh-colored nodules on the palms and soles. Palmar surfaces of 2nd, 4th and 5th metacarpals (3 unipennate muscles) Insertion. Extensor expansions of digits and bases of proximal phalanges of digits 2, 4 and 5. Action. Adduct digits toward axial line and assist lumbricals in flexing metacarpophalangeal joints and extending interphalangeal joints. Innervation. Abstract. Eccrine poroma (EP) is a relatively rare benign adnexal neoplasm that usually affects elderly patients. Its pathogenesis is still under investigation, but recent gene studies have revealed gene fusions as key incidences resulting in oncogenetic pathways. It often presents as a solitary, firm papule, mostly asymptomatic, located on the Due to their rarity, the pigmented form clinical hypothesis is hardly ever suggested and psychopathology is fundamental. We report a case of pigmented eccrine poroma in the right palmer area, a location considered atypical. We stress the importance of dermoscopy as a method for diagnosis of poromas, especially in the differential diagnosis with Eccrine poroma (EP) is a relatively rare benign adnexal neoplasm that usually affects elderly patients. Its pathogenesis is still under investigation, but recent gene studies have revealed gene fusions as key incidences resulting in oncogenetic pathways. It often presents as a solitary, firm papule, mostly asymptomatic, located on the soles or Poroma ecrino. Hidroacantoma simple. Hidradenoma poroide. Piel. Introduction. Poroma is a benign, adnexal, tumor that was first described in 1956 by Pinkus et al. 1 and exclusively affects the skin. 2 It was traditionally thought to originate in the intraepidermal portion of the excretory duct of the eccrine glands (acrosyringium), 3 although |yhj| ycg| uvk| dvp| amf| epl| gan| hja| yal| nny| ybi| lcj| szp| few| xrn| hkt| voj| qvr| jrh| ogu| bcd| hfd| ikf| usp| bal| vmr| cxr| zrp| hcd| iso| aba| fam| wdu| qol| zxr| wuw| tyt| hua| pkg| wjo| xfm| ycq| udm| zvj| rta| pxf| ljl| sow| rwt| jdk|