Squamous cell carcinoma

Shalom, Dr Hovav!
Thank you very much for your previous reply.
My father was diagnosed with the Squamous cell carcinoma, stage 4 with mets to bones and probably kidneys (could you please comment the Pets scan attached – has he definitely got metastasis in the bones and kidneys? What are the chances of Pets scan being false positive in this case?) Which chemotherapy drugs are used for the Squamous cell carcinoma? What is the difference in treatment for this and other types of NSCLC? Will biological treatments ( like tarceva) work for this type of NSLCL? Are the any clinical trials in Israel for it?
Thanks a lot – I really appreciate your replies.