The special obseration in this case is the lack or hypotrophy of the aleolar buds.Hypodontia and dental anomalies are known features of Trisomy 21. 本病例特殊的发现是牙槽缺乏或发育障碍，牙发育不全或牙齿异常时21三体的特征。
The entire ventricle may become thicker (symmetric ventricular hypotrophy) or it may happen only at the bottom of the heart (apical hypertrophy). 在这种情况下，有可能整个心室增厚（又称为“对称性心室发育障碍”），也可能进心脏底部增厚（又称为“心尖肥厚型心肌病”）。
Objective The female nipple hypertrophy and mammary hypotrophy can be corrected by simultaneous operation to get more beautiful mammary profile. 目的对女性乳头肥大伴有小乳症者,进行综合手术治疗,以求达到乳房外形更加谐调完美的效果。
