The overall waiting list has grown again and, after 24 months of consecutive falls, the number of people waiting more than two years for treatment has increased.
Mae'r rhestr aros gyffredinol wedi tyfu eto ac, ar ôl i'r nifer ddisgyn am 24 mis yn olynol, mae nifer y bobl sy'n aros fwy na dwy flynedd am driniaeth wedi cynyddu.