Julio Sergio is a former Roma goalkeeper who wore the Roma shirt from 2006 to 2011.
The Brazilian shared on social media a photo of his arrival at the Trigoria Sports Center and wrote: "It is a pleasure to return to Trigoria and see many friends again, thank you all for the welcome!
Recently, Julio Sergio resigned as assistant coach of Brazil's First Division Coritiba.
Julio Sergio's visit coincided with Roma's resumption of training in preparation for the European Cup semi-finals against Leicester City in the Premier League.
Enzo, the son of former Roma goalkeeper Julio Sergio Bertanioli, has been battling brain tumors since 2020.
Roma boss Jose Mourinho recorded a video for his son Enzo after meeting the former Roma goalkeeper to encourage him to make a quick recovery.
Mourinho said in the video: Hi Enzo, your father is with me today, I am very happy to meet him, it is a pleasure to make this video for you. Come on! Enzo, I hope to see you one day in Trigoria or at the Olympic Stadium. You are great and enjoy the Brazilian sunshine.