Totally implantable venous access ports (TIVAPs) provide a useful option for intravenous parenteral feeding and application of chemotherapy in patients with malignancies. 1 The use of long-term catheters was first described by Broviac et al 2 in 1973 and later modified by Hickman et al 3 in 1979. In 1982, Niederhuber et al 4 introduced totally implanted venous port systems for patients with cancer. The mean duration that catheters are left in place is about 12 months. 1 , 5 Complications after implantation of TIVAPs are rare 6 , 7 and depend on the disease, the patient's performance status and blood cell count, the technique for placement of the catheter and port reservoir, and the postoperative care.8 They can be categorized as early and late complications. Early complications include pneumothorax, infections, bleeding, wound-healing disorders, pulmonary distress, and dislocation. Late complications include infections, abscesses, sepsis, and thrombosis or secondary leakages. A TIVAP catheter leakage can be related to inadequacies in the surgical technique or faults in the material and can lead to extravasation injury. 9 The diagnosis is made clinically, radiologically, or by both means. We report a case in which noninvasive sonography in the power Doppler mode was used with 0.9% sodium chloride as a contrast medium to provide evidence of a TIVAP catheter leakage. From this experience, noninvasive sonography in the power Doppler mode and 0.9% sodium chloride as a contrast agent might be a useful tool for diagnosis of leakage in a port system.