Figure 1.

(a) V/Q scan with atypical perfusion uptake in the upper part of the mediastinum (white arrow). Anterior views are visualized in the upper part and posterior views in the lower part. (b) Perfusion ^99mTc-macroaggregated albumin single-photon emission computed tomography/computed tomography with uptake at the level of the posterior edge of the fifth thoracic vertebra (white arrow) and less intensely in the seventh thoracic vertebra (coronal views of single-photon emission computed tomography/computed tomography fusion in the upper part and single-photon emission computed tomography in the lower part). (c) Chest computed tomography scan with contract injection (maximum intensity projection MIP reconstruction) with unusual tortuous veins in the left thoracic wall and collaterals of the lateral thoracic vein (gray arrow)