title: Granulomatous Lithiasic Cholecystitis in Sarcoidosis.
abstract: Gallbladder granulomas are exceedingly rare, reported in association with tuberculosis or sarcoidosis. Here we report a case of gallbladder granulomatous cholecystitis occurring in the context of sarcoidosis. A 70-years old man presented with abdominal pain, nausea and vomiting. The medical history revealed sarcoidosis diagnosed more than 20-years previously. 2-years previously the patient showed renal lithiasis, hypercalcemia and, increased angiotensin converting enzyme. The imaging features suggested thoraco-abdominal sarcoidosis. Prednisone was given at 1.2 mg/kg/day initially, than decreased, being at 2.5 mg/day at present. The ultrasound examination showed gallbladder lithiasis. A cholecystectomy was performed. Microscopy showed subacute and chronic cholecystitis with several epithelioid and giant cell granulomas some of them perineural. In conclusion, we report a case of granulomatous cholecystitis occurring in the course of treated sarcoidosis. The perineural location of granulomas may give further insights into the pathogenesis of gallbladder dysmotility.
authors.affiliation: Department of Pathology, Paris Public Assistance Hospitals, North Paris Sorbonne Cité University, Avicenne Hospital University Group , Bobigny, France.
authors.forename: Adriana
authors.initials: A
authors.lastname: Handra-Luca
keywords: Gallbladder; cholecystitis; granuloma; lithiasis; nerve; perineural; sarcoidosis