A 42-year-old police constable came into an Indian hospital complaining of stomach pain, the Times of India reports. According to the Telegraph, an ultrasound showed a mass doctors believed to be cancer. The reality was much more disturbing. An endoscopy revealed the mass to be a whole bunch of knives. On Sunday, doctors performed surgery, removing 40 knives from the man's stomach, News 18 reports. Dr. Jitinder Malhotra calls the five-hour operation the "most dreadful surgery" he's ever performed.