Ct scan showed 1.4x1.4 CM ill defined mass right hilum. Too small to biopsy? 2.5cmx1.5 CM lymph node between aorta and IVC below renal hilum. Concerns?

Lymph nodes. Difficult issue,from your description the larger node might be amenable to biopsy.Why are you having the CT performed? Short term follow up CT or other additional imaging should help.