Massive gallstone in an asymptomatic Indigenous Canadian male: Case report and literature review.

INTRODUCTION

Gallstones are present in 10-15% of North Americans, but only 20% become symptomatic. This case report describes a patient with a 7.5 cm gallstone detected incidentally while being investigated for cardiac pathology. This is the first report in the English literature of a stone this size that has remained clinically asymptomatic. This work is reported in line with the SCARE criteria.

CASE REPORT: The patient was a 71-year-old Indigenous Canadian male, with atrial fibrillation. His cardiologist ordered a CT scan of his chest, which incidentally identified a large gallstone. He was referred to surgery for asymptomatic cholelithiasis. An uncomplicated laparoscopic cholecystectomy was performed. Final pathology showed a 7.5 cm gallstone with features of chronic cholecystitis.

DISCUSSION: The patient's ethnicity and gallstone size placed him at increased risk for gallbladder cancer, gallstone fistulization and perforation. We reviewed the literature for asymptomatic patients who may benefit from cholecystectomy: transplant recipients and those with hemolytic disorders. Laparoscopic cholecystectomy is not currently indicated in diabetics and bariatric surgery patients.

CONCLUSION

This case report shows that there are asymptomatic patients with massive gallstones. A review of their history, risk factors for malignancy and future gallstone related complications must be carefully weighed and discussed prior to deciding on surgical versus expectant management.