From PFT :

A league source tells us that the talk among the Browns is that tight end Kellen Winslow landed in the Cleveland Clinic because his balls swelled to the size of grapefruits.

Actually, one explanation for the situation is a condition known as hyrdocele.  And while the condition in itself isn™t serious, it could be a symptom of testicular cancer.

Kaz Matsui
and I are in full agreement on this one : until Winslow’s condition has a longer term impact on his career, this was really more than anyone outside of his family needed to know. Members of America’s pump cults excepted, of course. If this were a member of the Hooded Casanova’s football family, Winslow would be dressed Sunday as a decoy at the very least (possibly with larger pants).