Although anterior indentation of the oesophagus by a vascular structure is usually considered diagnostic of an aberrant left pulmonary artery, a case is reported where such an indentation was caused by systemic collateral artery in pulmonary atresia crossing from left to right between the trachea and oesophagus. The artery produced a visible density on plain roentgenograms. Anterior vascular indentation of the oesophagus is still most likely due to an aberrant left pulmonary artery, but the possibility of a systemic collateral artery should be kept in mind.
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging