Staff members at the clinic where Joan Rivers had a routine endoscopy scheduled have reportedly told investigators her personal doctor took a selfie while the comedienne was under anesthesia.
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The 81-year-old Rivers was at Yorkville Endoscopy clinic for an endoscopy by another doctor, gastroenterologist Dr. Lawrence Cohen.
After the Cohen -- the clinic's director -- performed the endoscopy a biopsy was reportedly performed, without the comedienne's prior consent.
Investigators now believe it was during the biopsy Rivers' vocal cords began swelling, cutting off oxygen to her lungs -- causing the cardiac arrest.
Rivers was rushed to Mount Sinai hospital where she died a week later.Dr. Cohen is no longer at the clinic where the endoscopy was performed.
