middle lobe of right lung

Located anteriorly between the horizontal & oblique fissures & includes 2 bronchopulmonary segments: 1) lateral (S IV) 2) medial (S V)

Related

azygos lobe of right lung inferior lobe of (left/right) lung, (lower lobe of lung) superior lobe of(left/right) lung (upper lobe of lung)

References

Stedman's Medical Dictionary 27th ed, Williams & Wilkins, Baltimore, 1999.