The 26-year-old is suffering from kidney failure and the Romanian Rugby Federation donated the profits from ticket sales in Bucharest towards Vaiomounga's on-going care.
He was playing for Romanian champions CSM Baia Mare when he was diagnosed last year and represented Tonga in 13 tests.
The 'Ikale Tahi won the Rugby World Cup warm-up match 21-16, with their former flanker leading the visitors onto the field before kickoff.
