posterior basal bronchopulmonary segment S X

posterior basal bronchopulmonary segment S X

[TA] of the four bronchopulmonary segments of the inferior lobes of the right or left lung that contact the diaphragm, the one lying nearest the vertebral column, supplied by the posterior basal segmental bronchus [B X] and posterior basal segmental (pulmonary) artery. Synonym(s): segmentum bronchopulmonale basale posterius S X [TA]