A 46-year-old Indian man who was suffering from severe stomach pain for over two years had nearly 12,000 stones removed from his gallbladder, Central European News (CEN) reported. Vinod Sharma, who underwent surgery at Sawai Man Singh hospital in Jaipur on Nov. 23, had a previous CT scan, but there were so many stones that it was impossible to see them.

“In the CT scan report, it was not clearly mentioned that the gallbladder had stones,” Dr. Jeevan Kankaria, associate professor at Sawai Man Singh hospital told CEN. “It was mentioned that there could be a possibility of stones. The stones were in such a huge quality that the CT failed to diagnose the problem.”

Surgeons laparoscopically removed the nearly black stones— which measured between .08 inches and .13 inches in diameter — and sent them away for analysis. The coloring may have been due to Sharma’s diabetes, which doctors also worked to control during his hospital stay, CEN reported.

The exact number of stones removed was 11,816. Sharm told CEN he is leading a normal life since being discharged.