Among 17 cases of MPMN that have been reported, 4/17 were synchronous (23.5%) and 13/17 were metachronous (76.5%), out of 17 patients, 10 were femals and 7 were males.
Trong 17 trường hợp: 10 nữ và 7 nam: 4/17 (23,5%) MPMN cùng lúc, 13/17 (76,5%) MPMN phát triển sau đó.