Methods:The X-ray and CT findings and clinical sym ptoms in 6 cases (2 families) with cleidocranial dysplasia were analysed, and d iscussed on genetic basis.

• 方法分析6例(2个家庭)锁骨颅骨发育不全的临床、X线及CT表现,并从遗传学角度进行探讨。