Anyone here have a doctor not recommend a PET scan? The first doctor we saw does not recommend a PET scan. He says it's not indicated. He ordered my mom head and neck ct which doesn't show lungs or brain. I've gotten 2 options since then and the other doctors did recommend PET scans. Also, the first surgeon doesn't do PET scans after. Anyone have a doctor go this route?

I'm supporting my mom who was diagnosed with scc.
6/4/15- 1st saw dentist with complaints of lesion that wouldn't heal.
8/2/15 after visits to primary and dentist for second opinion, biopsy performed on gums and tongue.
8/4/15 diagnosis of scc of oral cavity (stage 4)
9/22- surgery for resection of portion of jaw, 60% of tongue, floor of mouth, soft palate, pharynx and neck dissection. Reconstruction with leg bone and skin graft from thigh.