Hi all. I would like to introduce myself. Im new to the forum. It may be a long one I'm sorry.

I've been reading the posts on here for the last few days and it has helped me to be strong for this scary week. But I have so much confusion and questions and no idea what is happening so I thought I would take the time to do a post and have some guidance.

My dad has been ill for a while. He's always never been fully fit for as long as I can remember. Never anything in particular but more the case of he's always had a lack of energy, it can take him hours and hours to 'Prepare' himself for each day (feeling groggy), arthritis, a bad shoulder, poor circulation, always had a cough since I was tiny, which I assumed was normal with a smoker. Nerves, Anxiety, poor eyes and having no luck with his glasses causing him pressure and pain but then struggles without them. Palpatations (All of the above for as long as I can remember growing up, I'm 25)

Now the next part I feel incredibly guilty for, He lives alone, in our childhood home and I don't visit as often as I should. We keep in touch via messaging online and he seemed his usual self.

Last week he was taken into hospital and when I rushed up to see him I found out that in December he started to get a feeling all over his body that he can't describe, a pain or reaction/taste in his mouth when he tries to eat, his vision had almost gone and he couldn't stand without going dizzy and having palpatations again. So he phoned an Ambulance on christmas eve - by the time it arrived it calmed slightly they checked his Obs which then appeared normal. they basically said if you can get to the door your fine and not to waste their time. Then later he seeked help again but was told the same After that - Now this is the part that crushes me - He got into bed and curled up into a ball with the sheets over his head and stayed their for two weeks. Without eating. I had no idea and I feel awful. A family member found him in bed after two weeks of not eating and forced him to have an ambulance out again and he was so scared they would shout at him and didn't want to. This time after seeing how much weight he has lost they took him into hospital thankfully.

He had a chest xray and a ct scan and he was told theres a large shadow on his lung. Lung cancer. Since then this week hes had further tests a biopsy (I think) and we are still none the wiser yet but the hospital are being excellent so far. 

Now what I don't understand is this shadow, my dad knows/knew about it as it was on a scan about  15-20 years ago when I was a baby. 

So could it be lung cancer if this shadow was there then? 

Im so confused. They have also found a cyst on his kidney, his vision isnt great he can only see shadows and is hallucinating. He's trying to eat small amounts he really is trying so hard and I'm so proud of him, but he is struggling with eating. He's sweating a lot which terrfies me he may loose more weight. He has a cream substance he is coughing up that we don't know what it is either.

I just feel so confused and have no idea what is happening at the moment. So any guidance or advice on what I can say to the doctors or ask would be greatly, greatly apprciated. Thank you so much in advance. 

S x