Surgeons Extract 3.1kg Bladder Stone, Likely a World First

A surgical team in India has successfully removed

A surgical team in India has successfully removed a massive urinary stone weighing 3.1 kilograms from a man's bladder, a mass comparable to the weight of a full-term newborn. The procedure took place at a hospital in the city of Nagpur, where doctors say the specimen is almost certainly the heaviest ever documented in medical literature.

The patient, a 49-year-old man who has not been named publicly, had reportedly suffered from severe lower abdominal pain, difficulty urinating, and recurrent infections for several months. He sought help only after the discomfort became unbearable, according to the lead surgeon on the case.

During the operation, which lasted roughly two hours, the medical team used open surgery to extract the stone intact. The object measured approximately 15 centimeters in length and 10 centimeters in width, with a hard, irregular surface typical of long-standing mineral buildup.

Post-operative scans showed the patient's urinary tract …

Post-operative scans showed the patient's urinary tract is now clear, and he is expected to make a full recovery. Hospital spokespeople confirmed that he has been discharged and is already walking normally, with follow-up care scheduled to monitor kidney function.

Experts not involved in the case note that bladder stones generally form over many years, often due to chronic dehydration, urinary obstruction, or metabolic disorders. Stones of this size are exceptionally rare, as most grow to only a few centimeters before causing symptoms that prompt intervention.

The previous reported record for a bladder stone was around 2.8 kilograms, but that case involved a different composition and was never fully verified. The Nagpur team plans to submit their findings to a peer-reviewed journal, along with photographs and imaging data, to formally claim the new world record.