Diseases of lymph or lymph vessels. [MeSH]
Pathology.—By common usage, the term lymphadenopathy is usually restricted to enlargement, due to any cause, of the lymph nodes. Synonyms include lymph node enlargement (preferred) and adenopathy.
CT scans.—There is a wide range in the size of normal lymph nodes. Mediastinal and hilar lymph nodes range in size from sub-CT resolution to 12 mm. Somewhat arbitrary thresholds for the upper limit of normal of 1 cm in short-axis diameter for mediastinal nodes (79) and 3 mm for most hilar nodes (80) have been reported, but size criteria do not allow reliable differentiation between healthy and diseased lymph nodes (Fig 36). [Fleischner Society]
BI-RADS MRI: Enlarged, rounded lymph nodes with loss of fatty hila.