Pulmonary embolism with contralateral agenesis of pulmonary artery

Case contributed by Dr Ammar Haouimi


Chest pain with shortness of breath.

Patient Data

Age: 33 years
Gender: Male

The chest radiographs show volume loss of the right lung with elevated right hemidiaphragm, reduced intercostal spaces, decreased vascular markings and no visualization of the right pulmonary artery shadow. The left lung shows prominent vascular markings with no volume loss.

The CT images reveal an interruption of the right pulmonary artery 1.5 cm from the bifurcation (a pericardial recess is seen at the site of interruption). Multiple systemic collaterals are observed supplying the right lung. There is dilatation of the main and left pulmonary arteries, as well as the lobar and segmental branches. Multiple intraluminal filling defects are seen within the left lobar arteries as well as their segmental and subsegmental branches.

Lung window shows decreased volume and vascular markings of the right lung as compared to the left. Interstitial changes of the right lower lobe with mild bronchial dilatation of the lung base. Note the prominent vascular markings of the left lung with mosaic perfusion pattern in the upper lobe.

Case Discussion

The mortality rate from pulmonary embolism is higher in a patient with contralateral agenesis of the pulmonary artery.

In such case, the differential diagnosis for the right lung findings is a chronic pulmonary embolism.

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Case information

rID: 60995
Published: 26th Jun 2018
Last edited: 10th Jan 2019
System: Chest
Inclusion in quiz mode: Included
Institution: Aurès Medical Imaging Center - Batna Algeria

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