PMC6330799_01
Computed tomography bronchial angiography axial (a) and coronal (b) maximum intensity projection images in mediastinal window setting show a well-defined contrast outpouching (white arrows in a and b) in the left upper lobe. Note patches of consolidation in bilateral upper lobes
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F1
A small contrast-filled outpouching was seen within the cavity in left upper lobe [Figure 1a and b].
Diagnostic angiograms (a and b) of left 3rd intercostal artery shows a lobulated pseudoaneurysm (black arrow). The intercostal artery was prominent and tortuous with an abnormal parenchymal blush. Postembolization check angiogram (c) shows the isolation of pseudoaneurysm
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F2
A pseudoaneurysm was seen arising from the left 3rd posterior intercostal artery with abnormal parenchymal blush and systemic pulmonary shunting [Figure 2a]. Selective cannulation of the intercostal artery was done with progreat microcatheter (Terumo, NJ, Japan) [Figure 2b] and embolized using polyvinyl alcohol particles (PVA) 500 mm-700 um and gelfoam slurry. Postembolization check angiograms did not show opacification of pseudoaneurysm [Figure 2c].