A 50-year-old patient after implantation of a Jotec stent graft in the abdominal aorta in 2014, under the constant care of the Outpatient Clinic of Vascular Diseases, Regional Specialised Hospital No. 4 in Bytom, with a stent inserted into the abdominal aorta in 2014, reported to the ward with suspicion of a type IIIA leak. The presence of the leak was confirmed by angio-CT scan. On the basis of the scan the patient was qualified for implantation of the Nellix system into the Jotec stent and was operated on 19th October 2017. The procedure was carried out without any complications. The check-up angio-scan showed no leak whatsoever. Another angio-CT scan was performed a month later and showed no evident leak with the Nellix system stents placed correctly. At present the patient remains at home in good general condition. The date of another check-up including an ultrasound scan has been set.