Dikembe Mutombo is one of the best defensive players in the history of the NBA. Now the basketball legend is suffering from a brain tumor.

Eight-time All-Star Dikembe Mutombo, one of the best defensive players in NBA history, is suffering from a brain tumor and has already started treatment.

The 56-year-old’s family made the announcement on Saturday.

Mutombo is receiving the best possible care from a team of specialists in Atlanta and is very confident, the statement said.

The 2.18 m tall center nicknamed “Mount Mutombo” played for 18 years in the NBA, among others for the Denver Nuggets, the New York Knicks, and in the last five years until his career ended in 2009 for the Houston Rockets.