

2
2
Neck lymph nodes
+/- 300 in H&N
Differentiation
–
Normal
–
Abnormal
Modalities
–
US
, CT, MR
Normal lymph nodes:
characteristics?
Small
Oval (kidney bean)
Hilus: present
Cortex: homogenous
Vascularity: hilar
Normal
Ahuja AJNR 2001
Abnormal lymph nodes:
characteristics?
Enlarged
Round
Hilus: absent
Cortex: heterogenous
Vascularity: peripheral
Abnormal
US: Neck lymph nodes
Localisation: level system
Characterisation: ?