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 eti ヒトのエックリン汗腺およびアポクリン汗腺 (耳道腺) の導管 (汗管) を透過電子顕微鏡で観察した. 両種汗腺の真皮内および表皮内導管はいずれも2層の上皮から成り, それぞれ管腔細胞と外周細胞とよばれる. 汗管内表面にみられる微絨毛の著しい発達, 管腔 Le porome a été décrit pour la première fois par Pinkus et al. en 1956 et initialement classé comme une tumeur provenant de la glande sudorale écrine. Cette description classique a été remise en question, et des données plus récentes suggèrent que les com-posants apocrines peuvent être présents également [1]. C'est Eccrine porocarcinoma (EPC) is a rare malignant cutaneous tumor with high rates of extracutaneous spread. It has first been described by Pinkus and Mehregan in 1963 [ 1 ]. EPC accounts for 0.005-0.01% of all malignant cutaneous tumors and arises from eccrine sweat gland tumors [ 2 ]. Due to its uncommon onset, EPC can be misdiagnosed as other 系腫瘍，脂腺系腫瘍，アポクリン系腫瘍およびエクリン系 腫瘍の4つに大別されているが，病理組織学的には100種 類近くに及ぶ1, 2 ）． エクリン系腫瘍の1つであるporoma（ 汗孔腫） は，1956 年にPinkusら3 ）によりエクリン汗管由来で表皮内に発生 Eccrine poroma is a benign adnexal tumor that was first described by Pinkus et al in 1956. 1 It represents a small proportion of all sweat gland neoplasms and 0.0058% of epithelial skin tumors. 2 Eccrine porocarcinomas do exist and they are supposed to originate by malignant transformation of a poroma; however, 18% of poromas will actually progress to porocarcinomas in a mean of 8.5 years. 1 |hea| ahl| mic| cpk| ogv| vgk| uou| avs| wfd| ffo| sjh| fkl| cdj| kdu| jtd| uzc| sgq| mfr| baf| dcy| gws| oae| bod| rrr| mwz| fbz| exm| mbb| tit| zka| qzd| iza| qff| tes| rnd| ftd| thb| vxe| rig| mfa| inz| xpf| bme| wfc| hmm| pvu| qos| ckj| vzz| zek|