XY females: revisiting the diagnosis

Diagnostic accuracy is assumed to be high when evaluating published work on these conditions; however, this study shows 52.1% of patients have unknown, inaccurate or wrong diagnoses. Assigning the wrong diagnosis may be harmful, for example, if it leads to irreversible virilising changes or development of a gonadal malignancy, and for all cases excludes accurate condition management and genetic counselling for both the patient and their immediate family.