ROME (AP) — Roma says that defender Leandro Castan has had neurosurgery that successfully removed a malformation on his brain.

Castan has been out of action since a September victory at Empoli, where he was substituted at halftime because of dizziness.

Roma says the malformation, known as a cavernoma, measured 3 centimeters (slightly more than an inch), and was "completely removed" during a 3 1/2-hour surgery.

Roma adds that Castan woke up after the procedure and was breathing unaided. Still, he will remain in intensive care for 24 hours.

The 28-year-old center back joined Roma in 2012 from Corinthians in his native Brazil.

The last two seasons, Castan played in 66 of Roma's 76 Serie A matches.