Figure 18.

Angiography in a 27-year-old patient presenting with recurrent hemoptysis shows anomalous systemic arterial supply to the posterobasal segment of the right lower pulmonary lobe. (A) The feeding artery (arrow) arises from the celiac trunk. (B) Selective angiography depicts racemose vessels (asterisk) in the lung base and a draining pulmonary vein (arrow). (C) Computed tomography shows the area of “pseudo-sequestration” (long arrow) and the abnormal artery (short arrow). (D) After embolization with microspheres and coiling (arrow) of the feeding artery, the posterobasal segment of the right lower lobe has normalized in computed tomography.