During Pope Francis’ visit to Philadelphia in September, one of the children brought to the popemobile was Gianna Masciantonio, a 1-year-old with a rare brain tumor. Last week, her parents said that the tumor has shrunk significantly.

According to Philly.com, Joe Masciantonio said his daughter’s tumor was “basically gone” after many rounds of surgery and chemotherapy. One family friend dubbed the girl’s encounter with the pontiff “the Miracle on Market Street.”