Follow up study of acquired XXXX .

@entity1 @entity4789 @entity339 @entity340 @entity204
In @entity1 with acquired @entity340 detected by group cardiac examinations at school, we analyzed follow-up data obtained during school days as well as after graduation from senior high school. Of the 343 @entity1 followed up after graduation from senior high school up to an age range of 20-38 years (mean: 29.3 years), 18 (5.2%) died, 16 (4.7%) deteriorated, 159 (46.4%) remained unchanged, 40 (11.7%) improved, 18 (5.2%) spontaneously recovered and 30 (9.7%) were treated surgically. Of @entity1 who showed spontaneous recovery after graduation from senior high school, 16 cases (8.4%) had @entity339 and 2 (3.6%) had @entity339 . In some @entity1 , the disease type changed many years after graduation from senior high school. In particular, the appearance of stenosal lesions in the mitral or aortic valve was often delayed. The mean annual @entity204 rate for @entity1 with acquired @entity340 (age range: 6-38 years) between April 1962 and March 1983 was 0.65%. The rate peaked at the 15-17 years age range. In recent years, the fatality rate has been falling and no @entity204 are seen in younger @entity1 . In the past, the leading cause of @entity204 in juvenile @entity1 with acquired @entity340 was the recurrence of @entity4789 . For the past ten years, however, no @entity204 attributable to the recurrence of @entity4789 has been registered.
