A surgical team at a hospital in Trincomalee, in the eastern region of Sri Lanka, successfully extracted an unusually large bladder stone during a procedure conducted last week. The stone weighed 3.1 kilograms and measured approximately 17 centimeters in length, comparable in size to an ostrich egg and weighing as much as a full-term infant.
The patient, a 55-year-old man, had been hospitalized following a stroke. While undergoing treatment for that condition, medical staff identified the presence of stones in his urinary bladder after observing symptoms of impaired urination. During surgical intervention, the team removed the stone, and Dr. Prahalahan Balakrishnan, who led the operation, stated that according to available medical records, this represents the largest bladder stone ever documented and removed through surgical means. The physician also reported that the patient was recovering well following the procedure.
According to Dr. Balakrishnan, the stone had likely been present in the patient’s bladder for approximately five to ten years. The patient remains hospitalized and continues to receive treatment for his other medical conditions. Bladder stones form when minerals present in urine crystallize and harden into solid masses, a process that typically occurs when the bladder fails to empty completely, leaving behind concentrated urine that develops into mineral crystals. While small stones occasionally pass naturally, larger formations exceeding one centimeter typically obstruct urine flow and necessitate medical removal, with stones surpassing four centimeters classified as giant formations.
Previously, according to Guinness World Records, the largest documented bladder stone was removed from a patient in Brazil in 2003, which weighed 1.9 kilograms and measured 17.9 centimeters in length.
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