I'll try to one-up you hippiedoc.
I had a patient with a known history of pseudocyesis claiming she was pregnant. She was arrested several weeks before, and placed in the all-female wing of a jail. She was then transferred to us.
She was found to not be pregnant while in jail. No one ordered a pregnancy test because she was in a no-male environment (except for guards). I ordered a pregnancy test on her anyway for the heck of it. It was positive. This caused ripples up the system because how could she get pregnant in an all-female wing of jail or in the all female unit of a psychiatric ward. My theory? She was getting it on with one of the male guards or the original test was in error.
I had another patient who had pseudocyesis that was ruled to not be pregnant by an ob-gyn doctor. So, for that reason, her case manager for weeks was trying to convince the patient she was not pregnant. I ordered a pregnancy test and it's positive. The ob-gyn doctor said she still wasn't pregnant, and the (+) test was a false one because she gave birth a few weeks before. The B-HCG is still being secreted by placental remnants. Okay fine. I didn't trust this guy, after all if there are placental remnants, he should've been freaking out to get them out but his attitude is whatever....
I figured either way, if she's pregnant or not, she's supposed to be seen by the ob-gyn doctor, at least so the placental fragments can be removed. The ob-gyn said there was no need for any further treatment.
So I ordered a quantitative B-HCG test every 48 hrs, and as I thought, they doubled, which if you remember, would only be the case if she were pregnant. I told the Ob-Gyn doctor to put her back under his care (of course only on an office basis, she was too dangerous to be discharged). He refused to take her back. We had her sent to the medical hospital twice to re-establish Ob-Gyn coverage. Each time they sent her back saying she was not pregnant.
I took it up with the administration. The patient had some pains in her abdomen. Hey, in the strategy of Rahm Emmanuel, never let a crisis go to waste. I insisted she go to the ER, and I specifically wrote that she needed an ultrasound of her abdomen. The ER doctor did an ultrasound (we don't have an US machine in the psychiatry hospital). The US showed a fetus.
In your face ob-gyn doctors!