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Medical Term:

secondary pulmonary lobule


a pyramidal mass of lung tissue with sides that are bounded by the incomplete interlobular connective tissue septa and with a base, which is 1–2 cm in diameter, which usually faces the pleural surface of the lung; lobules that occupy a more central position in the lung are not well defined and are considered to consist of three to five pulmonary acini with proximate terminal bronchioles.

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.