外生性甲下骨瘤(subngual exostosis)又名外生性骨疣[1],常见于成年人,尤其女性,是一种良性骨软骨肿瘤[1-2]。我科诊治1例,行甲母质部分修剪甲沟成形术后甲床愈合良好,现报告如下。1病历摘要患者女,43岁。因左足拇趾甲下结节伴疼痛1年余于2014年4月5日就诊。1年前患者无明显诱因左足拇趾甲缘出现一米粒大结节,偶尔疼痛,但能正常 Exogenous subchondral osteoma (subngual exostosis), also known as exostosis [1], common in adults, especially women, is a benign osteochondral tumors [1-2]. One of our department of diagnosis and treatment, a nail line part of a nail after forming a nail bed healed well, are as follows. 1 medical record Summary Female patient, 43 years old. Due to left foot and nape of lower nodules with pain more than 1 year in April 5, 2014 treatment. A year ago, there was no obvious incentive for patients with a large margin of the left foot and a penumbral nodules, occasional pain, but can be normal