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CT of thoracic lymph nodes. Part II: diseases and pitfalls

¹ Department of Radiology, Ramathibodi Hospital, Faculty of Medicine, Mahidol University, 270 Rama VI Road, Rajathevi, Bangkok 10400, Thailand, ² Mallinckrodt Institute of Radiology, Washington University School of Medicine, 510 South Kingshighway Blvd., Campus Box 8131, Saint Louis, Missouri 63110, USA

Correspondence: D S Gierada, 510 S. Kingshighway Blvd., St. Louis, MO 63105, USA. E-mail: gieradad{at}wustl.edu

CT is the primary non-invasive technique for the diagnostic evaluation of thoracic lymph nodes. The CT patterns and anatomic location of thoracic lymph node involvement can provide important clues in the diagnosis of many diseases. Part I of the pictorial review illustrates the anatomic location and drainage of thoracic lymph nodes in the chest wall, mediastinum, and lungs through examples of pathologic involvement. Part II of the pictorial review focuses on CT patterns of lymph node involvement in various pulmonary and extrapulmonary diseases, differential diagnoses based on CT findings, and pitfalls.