IgG4-related disease presenting as a ureteral tumor: a case report

VernacularTitle:IgG4相关性疾病表现为输尿管肿物1例报告
Author: Longzhi HE ¹ ; Yucheng GE ; Zhenqiang ZHAO ; Yukun LIU ; Siyu QI ; Chen NING ; Wenying WANG
Author Information

1. 首都医科大学附属北京友谊医院泌尿外科，北京　100050
Keywords: Ureteral diseases; IgG4-related disease; Tumor
From: Chinese Journal of Urology 2024;45(5):395-396
CountryChina
Language:Chinese
Abstract: IgG4-related disease (IgG4-RD) involving the ureter manifested as a ureteral tumor is rare. This paper reports a case of a female patient who was found with a mass at the left ureteropelvic junction for one week during physical examination. Urinary ultrasound and MRI showed a 3 cm mass at the left ureteropelvic junction with hydronephrosis, and the serum level of IgG4 was elevated. B-ultrasonic guided biopsy of the mass was performed. Histopathological findings showed lymphoplasmic infiltration and the ratio of IgG4/IgG positive cells>0.5. We finally diagnosed IgG4-RD and started using glucocorticoid for her treatment. One month later, CT-scan revealed that the tumor became smaller and the serum IgG4 decreased to the normal range.