Brantley is a 16-year-old male with body mass index (BMI)=22…
Brantley is a 16-year-old male with body mass index (BMI)=22 kg/m2 who presents for a sports participation physical. Auscultation reveals an early- to mid-systolic murmur with a crescendo-decrescendo quality. The murmur disappears upon standing. S1 and S2 are intact and the point of maximal impulse (PMI) is normal. The patient’s medical history is unremarkable and he does not report any cardiac symptoms. The most likely diagnosis is: