We present an asymptomatic patient with a history of prolonged hemodialysis through a right internal jugular vein catheter
who was diagnosed with superior vena cava (SVC) obstruction on 99mTechnetium-diethylenetriaminepentaacetic acid renal
transplant scintigraphy. During the angiographic phase, an unusual vascular filling pattern was detected on the anterior view
of the abdomen. Angioscintigraphic imaging of the chest wall was suggestive of SVC obstruction. The SVC obstruction in
our patient was related to the long-term use of an indwelling catheter in the central venous system, which is a well-known
complication of such a procedure. There is also evidence of a hypercoagulable state in dialyzed uremic cases; therefore, our
patient may have been more susceptible to an SVC thrombosis. Acquired compensatory dilatation of the azygos vein is rather
a rare finding. To the best of our knowledge, this is the first report describing an asymptomatic patient with SVC obstruction
who was diagnosed by renal scintigraphy
