2020 Volume 40 Issue 1 Pages 39-43
A 63–year–old woman who had undergone laparoscopic cholecystectomy for cholecystolithiasis 6 months previously visited our hospital complaining of right upper abdominal pain. Abdominal computed tomography and magnetic resonance imaging revealed two intraperitoneal masses, one measuring 35mm in diameter in the right lateral abdominal wall and the other measuring 10mm in diameter under the right diaphragm. These lesions were suspected to be intraperitoneal abscesses and the patient was followed up without treatment. Repeat computed tomography performed 3 months after the first revealed enlargement of both masses; in addition, the mass on the right lateral abdominal wall appeared to have infiltrated the right major psoas muscle. Based on these findings, the lesions were suspected as being malignant tumors, and both lesions were resected 15 months after the original laparoscopic cholecystectomy. Both specimens showed abscess formation and contained a stone each measuring approximately 5mm in diameter. Histopathological examination revealed abscess formation and granulation tissue, and the final diagnosis was intraperitoneal granulomas due to spillage of gallstones during the laparoscopic cholecystectomy performed earlier.
