From the case:
Lymph node regions (illustration)
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Diagram of lymph node regions as used in the Lugano (and previously Ann Arbor) lymphoma staging systems.
The above normal node sizes are based on recommendations from the Royal College of Radiologists 1, with the following additions:
- jugulodigastric lymph nodes may be up to 15 mm in short axis in younger patients 2
- mesenteric lymph nodes: <5 mm 3
- mediastinal lymph nodes: American College of Radiology accepts <15mm for incidental mediastinal lymph nodes 4
The above normal sizes are guidelines only and must be interpreted in the context of clinical suspicion and pre-test probability.
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