Doctors at a hospital in Bac Lieu Province, southern Vietnam on Friday performed surgery to remove 15 stones from the bladder of a 65-year-old Vietnamese man.

Among them, the biggest stone was about the size of an egg, Dr. Ta Huu Nghia, deputy head of the Outpatient Department of Thanh Vu Medic Bac Lieu General Hospital, said on Saturday.

The patient was identified as T. H., who resides in Ward 8 under Bac Lieu City.

He visited the hospital for a medical check-up on Friday as he suffered from dysuria, or painful urination.

He had previously taken medications to treat an enlarged prostate for several years, but his health condition did not improve, while he experienced pain during urination.

He was diagnosed with several stones in his bladder, and an enlarged prostate.

The removal of the 15 stones of many sizes lasted for 60 minutes.

Dr. Nghia said that stones falling from the kidney to the bladder can get bigger, and block the urine flow, resulting in pain.

In this case, stones were formed as the patient has an enlarged prostate that blocks the urine flow and makes the urine become concentrated, causing minerals in the urine to crystallize.

Residents are advised to drink enough water and avoid prolonged sitting to reduce a risk of stones in the bladder.

Men aged over 60 should regularly visit a hospital for a medical checkup to promptly detect stones, or an enlarged prostate.

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