Research Article| Volume 52, ISSUE 2, P323-329, August 1962

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Presumptive origin of a left lower accessory lung from an esophageal diverticulum

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      A case is presented of a left lower accessory pulmonary lobe successfully removed from a. 10-day-old Eskimo male because of severe respiratory distress resulting from compression of the left lung by the supernumerary lobe, and of the right lung by displacement of the heart.
      The tetrahedron-shaped lobe, consisting of nondiseased, largely bronchiolar parenchyma, was attached by a short pedicle to the lower mediastinum just above the esophageal hiatus. The pedicle contained a systemic artery from the aorta (which supplied the parenchyma), nerves, lymphatics, and lymph nodes, plus a single vein which passed from the lobe to an undetermined destination.
      Reasons are presented why it is believed that this lobe and other similarly located supernumerary lungs develop from a diverticulum of the esophagus.
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