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Renal transplantation is the treatment of choice for improved survival and quality of life in patients with end-stage renal disease. However, perirenal fluid collections are common surgical complications after renal transplant, with about 0.6 to 18% of patients developing a lymphocele. Conventional treatments include percutaneous aspiration and drainage, laparoscopic fenestration, and open surgical decompression stepwise. Recently, a new image-guided percutaneous transperitoneal balloon fenestration technique has been described as an alternative to the laparoscopic or surgical technique. We present the case of a 25-year-old male patient diagnosed with a lymphocele after 2 months of transplantation and no resolution of the lymphocele with percutaneous aspiration and drainage. We used this new technique under ultrasound and fluoroscopy guidance, which resulted in the resolution of the lymphocele at 1 month postprocedure. This case report highlights this new technique's potential role in successfully managing the posttransplant lymphocele in a minimally invasive manner. [ABSTRACT FROM AUTHOR]