临床上发生于间叶组织的良性肿瘤繁多，但发生于婴幼儿的多潜能间叶组织肿瘤及瘤样病变甚少，现报告婴儿纤维性错构瘤１例。患儿男，２岁，发现左上臂肿物１年余，无外伤史，肿物生长缓慢，近１个月增大明显。体检：患儿一般情况良好，生长发育正常，左上臂可触及５ｃｍ×... Clinically occurs in mesenchymal benign tumors, but occurred in infants and young children with pluripotenous mesenchymal tumor and tumor-like lesions is very little, a report of infantile fibrous hamartoma. Children, 2 years old, found that the left upper arm tumor more than 1 year, no history of trauma, tumor growth slow, increased significantly over the past 1 months. Physical examination: children generally good, normal growth and development, the left upper arm can reach 5cm × ...