甲下外生骨疣是一种孤立的良性肿瘤,我们于1992年遇到1例,并随访观察4年,现报告如下。患者女,17岁,1992年10月以右趾甲下疼痛性结节2年初诊。2年前患者感觉右ＩＶ趾甲下疼痛,穿鞋或局部受撞击时疼痛更甚,月余后发现甲下外侧有一微隆起的硬性结节,后逐渐增大,压之疼痛(照片8)。 An exoskeleton is an isolated benign tumor. We encountered 1 case in 1992 and followed up for 4 years. The report is as follows. The patient was female, 17 years old, and in early October 1992 she had a painful nodule under the right toenail. Two years ago, the patient felt pain under the right IV toenail. The pain was even worse when shoes were worn or partially impacted. After a few months, a hard nodule was found on the lower and outer side of the nail and then gradually enlarged and the pain was felt (photo 8).