Methods: Twenty-seven tissue expanders were inserted in 14 children (age range: 1.5 to 15 years) of pigmented naevi, h emangioma and scar tissue with exteriorization of the injection port.

• 方法：应用国产皮肤软组织扩张器共27只，采用注射壶及连接导管外置的方法，对14例1.；5-15岁患色素痣、血管瘤及烧伤瘢痕的患儿实行扩张术。