45,X/46,XY mixed gonadal dysgenesis (45,X/46,XY MGD) is a disorder of sex development (DSD) associated with a numerical sex chromosome abnormality resulting from Y-chromosome mosaicism and leading to abnormal gonadal development.
Height of the palate more than 2 SD above the mean (objective) or palatal height at the level of the first permanent molar more than twice the height of the teeth (subjective).