[A rare vascular malformation of the lung: discussion of the CT findings and nomenclature].
OBJECTIVE
To investigate the characteristic findings of an anomalous systemic arterial supply to the lung without the pulmonary artery on spiral CT and discuss its nomenclature.


METHODS
Four cases of anomalous systemic arterial supply to the left basal segment of the lung without the pulmonary artery were retrospectively reviewed with analysis of the characteristic CT findings.


RESULTS
On spiral CT scans, the involved left lower lung including the entire left basal segments (n=2), the lateral and posterior basal segment (n=1), and the anterior, medial, and posterior basal segment (n=1) had mild volume loss and areas of ground-glass opacity but with normal bronchial trees. The absence of the entire or part of the basal segments of the normal left lower lobar pulmonary artery, anomalous systemic artery originating from the abdominal aorta, diffuse dilatation of the systemic arterial branches distributed in the basal segments of the left lower lobe, and left lower pulmonary venous drainage into left atrium were found in all these patients.


CONCLUSIONS
This anomaly presents with characteristic findings on chest spiral CT, for which the nomenclature of local absent pulmonary artery better shows the characteristics of the disease.
Department of Radiology, Ningbo Woman and Children's Hospital, Ningbo 315012, China. lhh19711016@sina.com
Hong-huo
HH
Li
Cai-zheng
CZ
Geng
Guang-ping
GP
Yan
Guan-liang
GL
Wang
Hai
H
Yang
D000328:Adult; D001012:Aorta, Abdominal / Q000002:abnormalities* / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011651:Pulmonary Artery / Q000002:abnormalities* / Q000000981:diagnostic imaging; D012189:Retrospective Studies; D009626:Terminology as Topic; D036542:Tomography, Spiral Computed