Intrapulmonary right brachiocephalic vein associated with azygos lobe


      A rare case of right brachiocephalic vein (RBV) following an extramediastinal and intrapulmonary course in the anterior portion of the azygos fissure is presented. The appearance of the RBV and superior vena cava (SVC) on the chest radiograph in patients with an azygos lobe reflects the variable relationship between these veins and their mediastinal attachments. Computed tomography (CT) can easily demonstrate the mediastinal vascular anatomy thereby allowing identification of such variants and differentiation from anomalous pulmonary veins draining into the systemic vein.


      To read this article in full you will need to make a payment

      Purchase one-time access:

      Academic & Personal: 24 hour online accessCorporate R&D Professionals: 24 hour online access
      One-time access price info
      • For academic or personal research use, select 'Academic and Personal'
      • For corporate R&D use, select 'Corporate R&D Professionals'


      Subscribe to Clinical Imaging
      Already a print subscriber? Claim online access
      Already an online subscriber? Sign in
      Institutional Access: Sign in to ScienceDirect


        • Goebel N
        Der “lobus” venae anonymae.
        CT Sonogr. 1983; 3: 146-148
        • Mata JM
        • Caceres J
        • Llauger J
        • Palmer J
        CT demonstration of intrapulmonary right brachiocephalic vein associated with an azygos lobe.
        J Comput-Assisted Tomogr. 1990; 14: 305-306
      1. Williams PL Warwick R Dyson M Bannister LH Gray's Anatomy. 37th edn. Churchill Livingstone, Longman, London1992
        • Boyden EA
        The distribution of bronchi in gross anomalies of the right upper lobe, particularly lobes subdivided by the azygos vein and those containing pre-arterial bronchi.
        Radiology. 1952; 58: 797-807
        • Felson B
        The azygos lobe: its variation in health and disease.
        Semin Roentgenol. 1989; 12: 56-66
        • Speckman JM
        • Gamsu G
        • Webb WR
        Alterations in CT mediastinal anatomy produced by an azygos lobe.
        AJR. 1981; 137: 47-50
        • Mata J
        • Caceres J
        • Alegret X
        • Coscojuela P
        • Marcos JA
        Imaging of the azygos lobe: normal anatomy and variations.
        AJR. 1991; 156: 931-937
        • Caceres J
        • Mata JM
        • Andreu J
        The azygos lobe. Normal variants that may simulate disease.
        Eur J Radiol. 1998; 27: 15-20