骨软骨瘤是一种常见的原发性良性肿瘤 ,极少发生恶变。我院于 2 0 0 0 -0 7～ 2 0 0 2～ 0 1收治髂骨骨软骨瘤恶变 2例 ,现报导如下。1　病例报告例 1　男 ,3 5岁 ,工人。 3年前发现左侧腹股沟内侧包块 ,无疼痛和其他表现。近 1年来包块逐渐长至约拳头大 ,伴有局部疼痛、左髂关 Osteochondroma is a common primary benign tumor, with minimal malignant transformation. My courtyard in 2000-2007 ~ 2000 ~ 01 iliac osteochondroma malignant transformation in 2 cases, are reported as follows. 1 Case Report 1 male, 35 years old, worker. 3 years ago found the medial mass of the left groin, no pain and other manifestations. Over the past year, mass gradually grew to about fist, accompanied by local pain, left iliac off