Can a barium swallow be used for cancer diagnosis? I had a lesion (carcinoma in situ) removed from my lateral tongue this past summer. I had a CT scan and my ENT said that the lymph nodes were in the normal range between 1 and 1.5 and he did not recommend doing any further investigation (he said that a CT would be just as good as an MRI).

I am a 30 year old female (non-smoker, non-drinker). Any info is appreciated.