• L H Schwartz, J Bogaerts, R Ford, L Shankar, P Therasse, S Gwyther, and E A Eisenhauer.
• Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue (C-276D), New York, NY, USA. SchwartL@mskcc.org
• Eur. J. Cancer. 2009 Jan 1; 45 (2): 261-7.

AbstractLymph nodes are common sites of metastatic disease in many solid tumours. Unlike most metastases, lymph nodes are normal anatomic structures and as such, normal lymph nodes will have a measurable size. Additionally, the imaging literature recommends that lymph nodes be measured in the short axis, since the short axis measurement is a more reproducible measurement and predictive of malignancy. Therefore, the RECIST committee recommends that lymph nodes be measured in their short axis and proposes measurement values and rules for categorising lymph nodes as normal or pathologic; either target or non-target lesions. Data for the RECIST warehouse are presented to demonstrate the potential change in response assessment following these rules. These standardised lymph node guidelines are designed to be easy to implement, focus target lesion measurements on lesions that are likely to be metastatic and prevent false progressions due to minimal change in size.

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