RESUMO
BACKGROUND: Antegrade percutaneous insertion of a double J seems to be a good alternative when retrograde insertion fails. Malignant ureteral obstruction occurs due to occlusion of the ureter secondary to tumor invasion, extrinsic compression, which prevents intermittent urine flow, leading to acute renal failure, increased morbidity, mortality and interruption of cancer treatment. CASE: A 26-year-old woman with endometrial carcinoma with internal invasion of pelvic structures due to urosepsis and acute renal failure. She underwent anterograde percutaneous double-J implantation by interventional radiology due to the failure of retrograde catheter implantation. CONCLUSION: The antegrade double-J percutaneous implant technique is an alternative when the retrograde technique fails. This technique is feasible, with low morbidity and mortality and good quality of life for continuing cancer treatment.