PMC9751489_01
US-guided RFA for left cervical mass.
fonc-12-987484-g001.jpg
PMC9751489_01_fonc-12-987484-g001.jpg
f1
Accordingly, we aspirated the liquid components in the lesion, considering the continuous new production of fluid, seed implantation was not carried out, but RFA inactivation was performed on the solid portion at the same time as fluid extraction ( Figure 1 ).
No contrast enhancement in left cervical mass according to postoperative ultrasonography.
fonc-12-987484-g002.jpg
PMC9751489_01_fonc-12-987484-g002.jpg
f2
Postoperative ultrasonography showed no obvious contrast enhancement in the metastatic lymph nodes of the left neck ( Figure 2 ).
Metastatic lymph nodes accompanying internal liquefactive necrosis in right neck as shown in ultrasonography.
fonc-12-987484-g003.jpg
PMC9751489_01_fonc-12-987484-g003.jpg
f3
The US-guided measurements showed one of the lymph nodes in the right neck was around 21 x 11 mm, another was around 24 x 17 mm ( Figures 3 ,  4 ), and there were heterogeneous internal echoes.
Right cervical lymph node metastasis.
fonc-12-987484-g004.jpg
PMC9751489_01_fonc-12-987484-g004.jpg
f4
The US-guided measurements showed one of the lymph nodes in the right neck was around 21 x 11 mm, another was around 24 x 17 mm ( Figures 3 ,  4 ), and there were heterogeneous internal echoes.