Rare Incidental Finding of Multiple Pseudoaneurysms After Imaging-Guided Kidney Biopsy in a Patient With Lupus Nephritis: A Case Report and Literature Review.

Renal pseudoaneurysms are serious and rare vascular lesions. They can be seen in vasculitis or, more commonly, after renal biopsy, percutaneous renal surgery, penetrating trauma, and less frequently due to blunt renal trauma. We present the case of a 28-year-old woman with lupus nephritis accompanied by the incidental finding of renal pseudoaneurysms in both kidneys after an elective percutaneous renal biopsy of the left kidney. An abdominal CT scan showed a subcapsular hematoma and likely intraparenchymal lower pole hematoma. Two days after the procedure, angiography showed multiple pseudoaneurysms in the left kidney as well as a pseudoaneurysm in the upper pole of the right kidney.