Undivided Retromandibular Vein Leading to the Absence of External Jugular Vein

Y. Lakshmisha Rao; Vaishnavi Ballal; B. V. Murlimanju; Mangala M. Pai; Mamatha Tonse; Ashwin Krishnamurthy

doi:10.1055/s-0038-1675760

Journal of Morphological Sciences, Inhaltsverzeichnis

CC BY-NC-ND 4.0 · Journal of Morphological Sciences 2018; 35(04): 225-228
DOI: 10.1055/s-0038-1675760

Original Article

Thieme Revinter Publicações Ltda Rio de Janeiro, Brazil

Undivided Retromandibular Vein Leading to the Absence of External Jugular Vein

Y. Lakshmisha Rao

¹Department of Anatomy, Kasturba Medical College, Mangalore, A Constituent Institution of Manipal Academy of Higher Education, Manipal, Karnataka, India

,

Vaishnavi Ballal

²Kasturba Medical College, Mangalore, A Constituent Institution of Manipal Academy of Higher Education, Manipal, Karnataka, India

,

B. V. Murlimanju

¹Department of Anatomy, Kasturba Medical College, Mangalore, A Constituent Institution of Manipal Academy of Higher Education, Manipal, Karnataka, India

,

Mangala M. Pai

¹Department of Anatomy, Kasturba Medical College, Mangalore, A Constituent Institution of Manipal Academy of Higher Education, Manipal, Karnataka, India

,

Mamatha Tonse

¹Department of Anatomy, Kasturba Medical College, Mangalore, A Constituent Institution of Manipal Academy of Higher Education, Manipal, Karnataka, India

,

Ashwin Krishnamurthy

³Department of Anatomy, American University of Antigua, College of Medicine, Antigua, West Indies

› Institutsangaben

Abstract

We report a case of undivided retromandibular vein (RV) that was associated with the absence of external jugular vein (EJV). This variation in the jugular venous system was observed on the right side of the neck of a male cadaver. The posterior auricular vein drained into the RV, which joined the facial vein resulting in a common trunk. This common trunk then drained directly into the internal jugular vein (IJV) thus bypassing the whole venous drainage area of the EJV. It is believed that the knowledge about the venous variations, as in the present case, is enlightening to the clinicians. The preoperative evaluation of the venous system is essential to prevent complications like catastrophic bleeding and embolism. The knowledge may guide the emergency physician for a quicker cannulation of the veins.

Keywords

common trunk - external jugular vein - retromandibular vein

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