hilar lymphadenopathy
Pronunciation: HIGH-lar lim-fad-eh-NOP-ah-thee
Enlargement of lymph nodes at the lung hilum, often indicating malignancy or inflammatory conditions.
Full Definition
Hilar lymphadenopathy refers to the enlargement of lymph nodes located at the hilum of the lung, where the bronchi, blood vessels, and nerves enter and exit the lung parenchyma. In thoracic oncology, hilar lymphadenopathy is a common finding that may represent primary lung cancer, metastatic disease, or reactive changes. The hilar region includes lymph node stations 10, 11, and 12 according to the IASLC classification. Unilateral hilar lymphadenopathy in adults is concerning for malignancy, while bilateral involvement may suggest sarcoidosis, silicosis, or other systemic conditions. Proper assessment requires correlation with clinical presentation and often tissue sampling for definitive diagnosis.
Usage
Usage note: Specify unilateral vs bilateral; unilateral more concerning for malignancy in adults.
In Context
- "CT chest revealed unilateral hilar lymphadenopathy suspicious for malignancy." — Radiology report
- "Bilateral hilar lymphadenopathy raised suspicion for sarcoidosis rather than lung cancer." — Clinical assessment