VG H&N course intro Florence 2016.pptx

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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: ?