Does any part of the players physicals involve an EKG or chest x ray?
In general, ECG and chest x ray are not recommended for all preparticipation physicials in HS/college athletes in the US. (The European Society of Cardiology does recommend screening ECG for all young athlete physicals, and some studies suggest it has decreased the rate of sudden death in athletes). I do suspect that major college programs in the US, though, probably do ECGs on all their athletes anyway.
In brief, the main conditions we look for on screening ECG are:
-Hypertrophic cardiomyopathy
-Long QT syndrome
-Arrhythmogenic right ventricular cardiomyopathy
Regarding Tinsley, "enlarged heart" is a term with very little clinical meaning. It could mean dilated cardiomyopathy (enlargement of the left ventricular chamber), hypertrophic cardiomyopathy (pathologic thickening of the heart muscle itself) or some other less common conditions. HCM is usually very apparent on ECG, but other forms of enlarged heart are not as easily picked up by ECG.
"Athlete's heart" is another form of "enlarged heart" which is benign and can cause chamber enlargement and/or heart muscle thickening from training effect, often seen in elite athletes like Tinsley. The size and mass of the heart are more than "normal," but it does not lead to sudden death. It is very possible that Tinsley had athlete's heart, but there must have been something else abnormal that led teh ME to think it was more than athlete's heart.
You're right, it is none of the public's business what the actual diagnosis was, but it could be important for his family members since several of the above mentioned conditions are hereditary. God's peace to him and his family.