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[Pulmonary sequestration. Apropos of 10 cases].

Pulmonary sequestration is a congenital anomaly in which an aberrant systemic artery arising from the thoracic or abdominal aorta supplies part of the lung, usually the lower lobes. The sequestrates part of the lung may be anatomically included in the substance of the lobe (intralobar) or may be separate from the other lobes, being contained within its own pleural investment (extralobar). The cases of ten patients with sequestration of the lung seen during a seven-year period are reviewed, with special consideration of their clinical and radiographic findings. Emphasis is made on the differences of our cases with those of the literature: 1) Eighty per cent of the patients had previous symptoms; 2) The intra/extralobar ratio was 1.5/1; 3) All intralobar sequestrations were indifferently localized in left or right lower lobes, and 4) Associated anomalies were present with the same incidence in the two classic forms.