软骨粘液样纤维瘤为少见的骨良性肿瘤 ,可以恶变 ,容易误诊。门诊发现 1例 ,经手术病理证实 ,报道如下。男 ,5 2岁 ,左拇趾砸伤后逐渐肿大 2年余。局部皮肤红 ,皮温稍高 ,触之为骨性肿块 ,有轻压痛 ,无功能障碍。拍左足正斜位片 :左拇趾末节中远端有多个囊状透光区 ,有骨嵴分隔 Cartilage-myxoid fibroma is a rare benign bone tumor that can be malignant and easily misdiagnosed. One case was found in the outpatient clinic, confirmed by surgery and pathology, and reported as follows. Male, 52 years old, left thumb toe bruises gradually swollen for more than 2 years. Local skin red, skin temperature is slightly higher, touched as a bony mass, light tenderness, no dysfunction. Left oblique oblique film: Left distal hallux distal segment with multiple cystic translucent areas, separated by epiphysis