http://symptoms.wrongdiagnosis.com
I have read at this website that yes Cushing's is often times diagnosed as PCOS. My mom who had a hystarectamy due to PCOS about 30 years ago when that is what they did for just about every female problem. They didn't find out that it was PCOS untill after the surgery and they were able to look at everything. The doctors are now testing her for Cushing's syndrome.