Doctors found 526 teeth in a 7-year-old boy’s mouth after he complained of pain in his jaw.

The boy, identified as Ravindran from India, was found to have a growth in his jaw, according to a press release from Saveetha Dental College and Hospital, which treated the boy. The mass was approximately 4-to-5 centimeters by 3 centimeters in size, containing more than 500 teeth inside.

The tooth sizes varied from 1 to 15 millimeters and each resembled a tooth with crown covered by enamel and a root like structure.

“It was reminiscent of pearls in an oyster," a pathologist said in the release. “This pandora box of miniature teeth is a jewel on our crown."

The boy’s parents told doctors they first noticed some swelling in his jaw when he was 3.

According to the hospital, it took five hours to remove all the teeth. Doctors were able to remove the 7-ounce mass and all the extra teeth. Following the surgery, the boy was left with a healthy count of 21 teeth, according to CNN.

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