The right 4th costal cartilages of 110 Japanese cadavers(55 males and 55 females)were radiographically examined to elucidate the sex differences in the pattern of calcification.

• 为探讨第4肋骨钙化的性差状况，对110例(男女各55例)日本人第4肋骨进行了放射影象学检查。