“…[7][8][9] Oronasal fistula reconstructions by adopting myriad surgical techniques (e.g., local flaps, regional intraoral or extraoral flaps, and free flaps) have been widely addressed in cleft literature, [7][8][9] but the surgical management of persistent anterior oronasal fistulae (Electronic supplementary material 1) neighboring the alveolar cleft (i.e., the Pittsburgh classification type V to VII fistulae 10 ) has only been sparsely reported in sporadic cases. [11][12][13][14][15][16][17] The diagnosis and treatment of patients with persistent anterior oronasal fistulae should be distinguished from the commonly detailed surgical approach of oronasal fistulae characterized as complications of post-cleft palate repairs (i.e., the Pittsburgh classification type I to IV fistulae). 10 In our experience, persistent anterior oronasal fistulae are particularly challenging to repair, as this subgroup of patients is distinct from those who usually have been followed up within our standard cleft protocols.…”