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Surgeons Remove Possible World-Record 3.1kg Bladder Stone

8/18/2026

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Summary

Story summary

Dr Prahalahan Balakrishnan and his team in Trincomalee, Sri Lanka, removed a 3.1 kg (6.8 lb) bladder stone from a 55-year-old man, possibly a world-record size.
The 17 cm stone had been present for five to ten years and was discovered after the patient suffered a stroke and urinary difficulty.
He remains in good health, with the previous Guinness record being a 1.9 kg stone removed in Brazil in 2003.

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Story summary

Dr Prahalahan Balakrishnan and his team in Trincomalee, Sri Lanka, removed a 3.1 kg (6.8 lb) bladder stone from a 55-year-old man, possibly a world-record size.
The 17 cm stone had been present for five to ten years and was discovered after the patient suffered a stroke and urinary difficulty.
He remains in good health, with the previous Guinness record being a 1.9 kg stone removed in Brazil in 2003.