Node of arch of azygos vein

Nodus arcus venae azygos · Uzlina oblouku nepárové žíly

Lymphatic & immune

Looks like

A node beside the arch of the azygos vein, where it hooks over the right main bronchus.

Filters lymph from the right lung and lower windpipe.

Part of the right lower paratracheal group checked in lung cancer staging.