Hi everyone, I'm new on the forum  and in need of hopefully some reassurance.

I had a CT scan in January to look at my heart and arteries and was very relieved when the results came back say8ng all was fine. However 3 weeks ago I received another letter from the hospital to say that as part of their quality control, radiologists have reviewed the scan in more detail and found a tiny 5mm nodule in the mediastinum which they think is unlikely to represent anything significant but would like to repeat the scan in a years time to reassess it.

I suffer from health anxiety anyway since 3 years ago suffering a ruptured gallbladder and sepsis twice and this letter is really freak me out. I'm 66 years old and am ashamed to say that as much as I tried not, I googled it. Mainly because I had never heard of the Mediastinum. Anyway all I saw was tumour and cancer . 
Most things I have googled before usually come up with sinister stuff but also things that it could be that are not, but I cannot find anything positive at all and am feeling sick with worry that I have to wait a whole year to see if it grows, when it could be much larger then. Obviously I have had myself dead and buried by then in my mind. 
If anyone else has had any experience of this or can give me any reassurance, I would be so gratefully. Thankyou