PMC10272671_01
(A and B) Enhanced abdominal CT showed an irregular soft tissue lesion with contrast enhancement at right UPJ causing hydronephrosis (arrow) and lymphadenopathy over right common iliac and iliac chains (arrowheads), which was suggestive of right upper tract urothelial carcinoma with obstructive uropathy and lymph node metastasis. (C and D) Repeated enhanced CT 3 months after prednisolone treatment revealed resolution of the soft tissue mass and lymphadenopathy.
10.1177_11795476231180481-fig1.jpg
PMC10272671_01_10.1177_11795476231180481-fig1.jpg
fig1-11795476231180481
An enhanced computed tomography (CT) of the abdomen was performed, indicating a 3.3 cm irregular soft tissue mass with contrast enhancement at the right UPJ, right hydronephrosis, and lymphadenopathy over the left common iliac and iliac chains (Figure 1A and B). Follow-up abdominal CT 3 months after treatment revealed regressive change of soft tissue mass at the right UPJ and lymphadenopathy (Figure 1C and D).
Serial serum creatinine and IgG4 concentrations before and after prednisolone treatment in the patients with IgG4-RD.
10.1177_11795476231180481-fig2.jpg
PMC10272671_01_10.1177_11795476231180481-fig2.jpg
fig2-11795476231180481
The serum IgG4 level declined to 328 mg/dL and his renal function improved with the serum creatinine level decreasing to 1.19 mg/dL (Figure 2).