Lateral vein of right lung
Vena lateralis pulmonis dextri
- Latin synonym: Pars lateralis venae lobi medii
- Synonym: Lateral part of middle lobe vein
- Related terms: Lateral part
Definition
The lateral vein of right lung (V4; lateral part of the middle lobe vein) drains the lateral segment (S4) of the right middle lobe. This vein typically has a diameter of approximately 4.1 ± 1.6 mm and shows variable drainage patterns with the medial vein of right lung.
In 53.3% of cases, the medial and lateral parts unite to form a middle lobe vein trunk that drains into the right superior pulmonary vein
In 16.6% of cases, the medial and lateral parts drain separately into the right superior pulmonary vein
Other variations include drainage into the left atrium directly or into the right inferior pulmonary vein.
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