Congenital numeral anomalies of the semilunar valves in the aged.
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概要
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Thirty-two cases of congenital numeral anomalies of the semilunar valves were found among a total of 3, 000 consecutive autopsy of the aged more than 60 years, with an incidence of 1.06%. These consisted of 10 cases of bicuspid aortic valve (0.33%), 3 cases of quadricuspid aortic valve (0.1%), 2 cases of bicuspid pulmonic valve (0.07%) and 17 cases of quadricuspid pulmonic valve (0.5%).Calcified aortic stenosis developed in 7 out of 10 cases of bicuspid aortic valve. There were 8 cases in whom each coronary artery originated from each coronary sinus, and 2 cases in whom both coronary arteries originated from a coronary sinus. Three cases of quadricuspid aortic valve were not clinically diagnosed, and the 4th cusp was the smallest one, which was located between the right and the non-coronary cusps.One of 2 cases of bicuspid pulmonic valve showed diastolic murmur at the left sternal border, starting with the pulmonic component of the 2nd heart sound, which was considered to be pulmonic regurgitation. Morphologically union of the left and the right cusps was shown. Quadricuspid pulmonic valve showed the highest incidence, but clinical diagnosis was not made despite of cardiac murmurs in 9 cases. Morphologically 4 cusps of the quadricuspid valve were of the same size in 3 cases, and in 14 cases the 4th cusp was the smallest one, which was located between the right and the left cusps in 6, between the left and the antrior cusps in 7, and between the anterior and the right cusps in 1 case.
- 社団法人 日本老年医学会の論文