Upper GI 2017

Lymph Node Size: Upper limits of normal

• Short axis

• Lower para-aortic

11 mm

• Common iliac • Internal iliac

9 mm 7 mm 8 mm

• Obturator

• External iliac

10 mm

• ‘Size Ratio’

• <8 mm benign (minimal SA) • >10 mm malignant • 8 – 10mm – malignant if round (SA/LA > 0.8)

Carrington B, Imaging in Oncology, 2 nd Ed, p1007 Jager et al, AJR, 1996;167:1503-1507