Great sight for hoops fans last night -- legendary college broadcaster Dick Vitale made his return to the broadcast booth amid an ongoing cancer battle ... and the scene was emotional.

Vitale -- who battled melanoma earlier this year -- revealed back in October that he was battling another form of the disease ... and would be required to undergo six months of chemotherapy treatment.

Dickie V announced that he would continue to call games even during his treatment for lymphoma ... saying "That's my best medicine of all," and on Tuesday, he kept true to his promise.