Fig. 2From: Anesthetic management of a child with Kagami-Ogata syndrome complicated with marked tracheal deviation: a case reportExamples of M/W ratios (the ratio of the mid to widest thoracic diameter.) M/W ratio = a/b × 100. a At birth. The M/W ratio was 67% (normal range 82–89%). b At 1 year 10 months (before operation). The M/W ratio was 79% (normal range 83–98%). The M/W ratio tended to improve with ageBack to article page