Table 1.

Lymph node interpretation according to overall assessment

Judgment	18F-FDG uptake scoring	Short axis at CT	Shape	Fatty hilum
Clearly normal	0	< 10 mm	Elliptical	Present*
Inflammatory	1	Any size	Elliptical	Present
Suspicious	1–2	< 8 mm	Round	Absent
Clearly abnormal	2	≥ 8 mm	Round	Absent

*Uncertain identification for lymph nodes < 5 mm in short axis diameter