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Updated: Apr 4, 2026

Transaxillary First Rib Resection for Treatment of the Thoracic Outlet Syndrome
Published on: September 13, 2020
Sternal uptake of 99mTc-MAA in thoracic outlet syndrome
Yohji Matsusaka1, Tadaki Nakahara, Yu Iwabuchi
1From the Department of Diagnostic Radiology, Keio University School of Medicine, Tokyo, Japan.
Abstract:
Tc-macroaggregated albumin (MAA) uptake in the vertebrae has been reported in central vein occlusion, although its sternal uptake is rarely seen. We present a case in which Tc-MAA SPECT/CT showed spotty uptake in the sternum. Contrast-enhanced CT revealed marked narrowing of the left subclavian vein at the thoracic outlet with a developed collateral vein running, in the left anterior chest subcutaneous tissue, between the sternum and left axilla. In this case, IV injection of Tc-MAA from the left forearm probably led to bone marrow uptake in the sternum due to retrograde venous flow through the collateral vein.
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