Hello and thanks for posting,

Unfortunately, as nurses, we can't really be very directive, or suggest what might be needed. This does need to come from a medical doctor.

Going private is an option, and your GP would still need to refer you, so you would need a discussion with them about this.

Ultrasounds are reported on, at consultant level. So, it would have been reviewed at senior clinician level, and overall the chances of sarcoma are slim, as they are uncommon in the general population. Lymph nodes can cause discomfort if enlarged, and equally, can sometimes take quite some time to reduce down in size again. So, another option is to wait and see. But obviously your GP can comment more on this. 

I do hope that you come to a conclusion soon,

Wishing you the best,

Vanda