Right middle lobe lateral segment

The right middle lobe lateral segment is one of the two bronchopulmonary segments of the right middle lobe. It is the most lateral of the segments in the right middle lobe.

Related Radiopaedia articles

Anatomy: Thoracic

Anatomy: Thoracic

• thoracic skeleton
  • thoracic cage
    • ribs
      • typical ribs
      • atypical ribs
        • first rib
        • eleventh rib
        • twelfth rib
      • variant anatomy
        • bifid ribs
        • Srb anomaly
        • cervical rib
        • lumbar rib
        • supernumerary ribs
        • eleven pairs of ribs
    • costal cartilage
    • sternum
      • manubrium
        • episternal ossicle
      • sternal body
        • sternal foramen
      • xiphisternum
        • costoxiphoid ligaments
  • thoracic spine
  • articulations
    • sternoclavicular joint
    • manubriosternal joint
    • costochondral joint
    • interchondral joint
    • costovertebral joint
    • xiphisternal joint
• muscles of the thorax
  • diaphragm
    • central tendon of diaphragm
    • diaphragmatic apertures
      • aortic hiatus
      • vena caval hiatus
      • esophageal hiatus
      • lesser apertures
    • sternocostal angle
  • intercostal space
  • intercostal muscles
    • external intercostal muscle
    • internal intercostal muscle
    • innermost intercostal muscles
    • subcostal muscles
    • transversus thoracis muscle
  • variant anatomy
    • sternalis muscle
• spaces of the thorax
  • superior thoracic aperture
    • costoclavicular space
  • mediastinum
    • superior mediastinum
    • thoracic plane (mnemonic)
    • inferior mediastinum
      • anterior mediastinum
      • middle mediastinum
      • posterior mediastinum
    • ITMIG classification
  • inferior thoracic aperture
• thoracic viscera
  • tracheobronchial tree
    • trachea
      • carina
      • left main bronchus
        • left upper lobe bronchus
        • left lower lobe bronchus
      • right main bronchus
        • right upper lobe bronchus
        • bronchus intermedius
          • right middle lobe bronchus
          • right lower lobe bronchus
      • secondary lobar bronchi
      • tracheobronchial branching anomalies
        • tracheal bronchus
        • cardiac bronchus
        • esophageal bronchus
  • lungs
    • bronchopulmonary segmental anatomy (Boyden Classification) (mnemonic)
      • left lung
        • left upper lobe
          • apicoposterior segment
          • anterior segment
          • lingula
            • superior lingular segment
            • inferior lingular segment
        • left lower lobe
          • superior segment
          • basal anteromedial segment
          • basal lateral segment
          • basal posterior segment
      • right lung
        • right upper lobe
          • apical segment
          • posterior segment
          • anterior segment
        • right middle lobe
          • medial segment
          • lateral segment
        • right lower lobe
          • superior segment
          • basal medial segment
          • basal anterior segment
          • basal lateral segment
          • basal posterior segment
      • variant anatomy
        • azygos lobe
        • horseshoe lung
    • lung parenchyma
      • pulmonary interstitium
        • peribronchovascular interstitium
          • interlobular septum
            • intralobular septum
      • bronchiole
        • terminal bronchiole
          • respiratory bronchiole
            • canals of Lambert
      • secondary pulmonary lobule
        • pulmonary acinus
          • primary pulmonary lobule
            • alveoli
              • pores of Kohn
        • centrilobular region
    • hilum
      • pulmonary ligament
    • pleura
      • pleural space
        • fissures
          • oblique fissure
          • horizontal fissure
          • accessory fissures
            • azygos fissure
            • left horizontal fissure
            • inferior accessory fissure
            • superior accessory fissure
            • vertical fissure line
      • superior pulmonary sulcus
      • inferior pulmonary ligament
  • heart
    • cardiac chambers
      • left atrium
        • left atrial appendage
          • accessory left atrial appendage
      • left ventricle
        • left ventricular outflow tract
      • right atrium
        • crista terminalis
        • Chiari network
      • right ventricle
        • moderator band
    • heart valves
      • mitral valve
        • aortomitral continuity
      • tricuspid valve
      • pulmonary valve
      • aortic valve
        • bicuspid aortic valve
      • papillary muscles
      • chordae tendineae
    • pectinate muscles
    • cardiac fibrous skeleton
      • aortic annulus
    • coronary arteries
      • coronary arterial dominance
      • myocardial segments
      • left main coronary artery (LMCA)
        • ramus intermedius artery (RI)
        • circumflex artery (LCx)
          • obtuse marginal branches (OM1, OM2, etc))
          • Kugel's artery
        • left anterior descending artery (LAD)
          • diagonal branches (D1, D2, etc)
          • septal perforators (S1, S2, etc)
      • right coronary artery (RCA)
        • conus artery
        • sinoatrial nodal artery
        • acute marginal branches (AM1, AM2, etc)
        • inferior interventricular artery (PDA)
        • posterior left ventricular artery (PLV)
      • congenital anomalies
    • innervation of the heart
    • fetal circulation
      • foramen ovale
      • fossa ovale
    • pericardium
      • pericardial space
      • ​oblique pericardial sinus
      • transverse pericardial sinus
      • pericardial recesses
        • aortic recesses
          • ​superior aortic recess
          • inferior aortic recess
        • pulmonic recesses
          • right pulmonic recess
          • left pulmonic recess
        • postcaval recess
        • pulmonary venous recesses
          • right pulmonary venous recess
          • left pulmonary venous recess
      • pericardial ligaments
      • epicardial fat pad
  • esophagus
    • Zenker diverticulum
    • Killian-Jamieson diverticulum
  • thymus
    • retrocaval thymus
  • breast
    • nipple-areola complex
    • terminal ductal lobular unit
    • axillary tail
      • foramen of Langer
    • mammary fat
    • Montgomery glands
      • Montgomery tubercles
    • Cooper ligaments
      • crests of Duret
    • retromammary space (Chassaignac bursa)
    • lymphatic drainage
      • Sappey plexus
      • intramammary lymph nodes
    • variants
      • supranumerary nipple (polythelia)
      • accessory breast tissue (polymastia)
      • breast hypoplasia
      • amastia
      • amazia
• blood supply of the thorax
  • arteries
    • thoracic aorta (development)
      • ascending aorta
        • aortic root
          • aortic annulus
          • coronary arteries
        • sinotubular junction
      • aortic arch
        • brachiocephalic trunk
        • common carotid artery
        • subclavian artery
          • vertebral artery
          • internal thoracic artery
            • musculophrenic artery
            • pericardiophrenic artery
            • superior epigastric artery
            • anterior intercostal arteries
          • thyrocervical trunk
            • inferior thyroid artery
            • suprascapular artery
            • ascending cervical artery
            • transverse cervical artery
              • dorsal scapular artery
          • costocervical trunk
            • supreme intercostal artery
            • deep cervical artery
        • axillary artery
        • variant anatomy
          • right-sided aortic arch
          • double aortic arch
          • ductus diverticulum
          • branching patterns
            • bovine arch
            • aberrant right subclavian artery
      • aortic isthmus
        • aortic spindle
        • ductus arteriosum
        • ligamentum arteriosum
      • descending aorta
        • posterior intercostal arteries
        • bronchial artery
        • superior phrenic artery
        • subcostal artery
    • pulmonary trunk
      • left pulmonary artery
        • aberrant left pulmonary artery
      • right pulmonary artery
  • veins
    • superior vena cava (SVC)
      • ​superior cavoatrial junction
      • variant anatomy
        • left sided superior vena cava
        • superior vena caval duplication
        • brachiocephalic veins (retro-aortic)
          • internal jugular vein
          • external jugular vein
          • subclavian vein
          • left superior intercostal vein
        • azygos vein (azygos system)
          • hemiazygos vein
          • accessory hemiazygos vein
    • inferior vena cava (IVC)
      • ​inferior cavoatrial junction
    • coronary veins
      • cardiac veins which drain into the coronary sinus
        • great cardiac vein
        • middle cardiac vein
        • small cardiac vein
        • posterior vein of the left ventricle
        • vein of Marshall (oblique vein of the left atrium)
      • anterior cardiac veins
      • venae cordis minimae (smallest cardiac veins or thebesian veins)
    • pulmonary veins
      • bronchial veins
    •  thoracoepigastric vein
• lymphatics
  • thoracic lymph node stations
    • intrapulmonary lymph nodes
  • thoracic duct
  • right lymphatic duct
• innervation of the thorax
  • phrenic nerve
  • vagus nerve
    • cardiac plexus
  • intercostal nerve
  • subcostal nerve