Hi. Thanks for your query. Noted your history of left testicle feels like its smashed or something and its been like this since you were 11 or so. You haven t been hit in the testicles and your right one is perfectly healthy and as large as a walnut, but the left one is small and feels crushed and lumpy like its busted into pieces. This indicates that there might have been a trauma or some infection or post-torsion status of the left testis. This can be invested well by an ultrasonography and color doppler and a clinical evaluation and examination by an Urologist. The treatment will obviously depend upon these findings.