label: Hilar lymph node enlargement
label_lc: hilar lymph node enlargement
description: "Hilar lymphadenopathy is swelling or enlargement of lymph nodes localized in hila, wedge-shaped anatomical structures containing pulmonary vessels, major bronchi, nerves and lymph nodes. Hilar lymph nodes are not visible on chest X-ray if they are not enlarged. Hilar lymph node enlargement can be caused by benign and malignant conditions and can be symmetrical (bilateral) or asymmetrical (unilateral)."