There is every reason to have hope for a positive outcome for your husband. Surgery still may be an option and if not, then systemic treatments may be very effective. There are several examples on this board of people with lymph node mets that have been going strong for many years and tolerating treatment well.
As for questions for the Onc....I would ask about complete genetic testing (if that hasn't been done). The more you know the better.
Hope that helps
40 yo Male. BC Canada. Sigmoid Colectomy Dec. 2016
Pathology T3N2bM1 19 of 24 Nodes Positive + tumour deposits
PET scan - Para-Aortic and Iliac Lymph node spread. Stage VI.
Moderately differentiated. MSS. KRAS/BRAF Wild.
Mutations: TP53, ERBB4, MLL3, PDCD1LG2, PRKDC, SMAD3
FOLFOX Commenced Jan 9/2017 - Avastin(Bev) added after round 1.
June 2017 Dose Reduction on Round 11 due to Neuropathy.
Good PET Scan July 2017 - on maintenance 5FU/Bev every 2 weeks until progression.