Surgery required for Karl

Boise State player Coby Karl, the son of Denver Nuggets coach George Karl, will undergo surgery to treat cancer next month.

The school announced Monday that Karl would have cancerous lymph nodes removed April 2. It will be the second surgery in 13 months for Karl, who had his thyroid removed last March after being diagnosed with papillary carcinoma, a form of treatable cancer. He also underwent chemotherapy to try to kill off any remaining cancer cells shortly after his surgery.

Brook Lopez staying put

Stanford’s 7-foot center, Brook Lopez, will remain in school for his sophomore season rather than declare himself eligible for the NBA draft.

“It is with great excitement and peace of mind that I plan to return to continue my education and be a member of the Stanford team next season,” Lopez said in a statement released by the school.

Memphis star sits out

Chris Douglas-Roberts, Memphis’ leading scorer, did not practice because of a sprained left ankle as the Tigers prepared for the NCAA tournament regional semifinals against Texas A&M.

Coaching carousel

Former Mississippi coach Rod Barnes was hired as the men’s coach at Georgia State to replace the fired Michael Perry.

•Ricardo Patton was hired as men’s coach at Northern Illinois.

•Northern Iowa women’s coach Tony DiCecco resigned after 12 seasons for health reasons.

He underwent quadruple-bypass heart surgery last August and leaves as the program’s winningest coach (183-161).