DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Gallbladder removal surgery. Surgeon inserting a trochar into a patient's abdomen during a laparoscopic (keyhole) cholecystectomy (gall bladder removal). Once the trochar is inserted, laparoscopy equipment can be fed through its hollow interior in order to reach the site to be operated on.
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