Thoracic Duct Aortic Hiatus — FRCA Primary MCQ
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Correct answer: C — Aortic hiatus at T12
The thoracic duct passes through the aortic hiatus at T12 alongside the aorta and azygos vein. It ascends through the posterior mediastinum and drains into the junction of the left subclavian and internal jugular veins.
Reference: RCoA 2021 Primary FRCA Curriculum