My 18 year old son found a lump under his arm, he has private health insurance. His GP sent him for am ultrasound as the lump was growing.  He assumed it would be a straight forward ultrasound but while he was there they did a needle biopsy.  He had the results of this in 10 days and the biopsy was benign.  We were surprised at his meeting with his consultant she said they were going perform surgery under general anaesthetic to remove the lymph node.  The consultant spoke to us after the operation to say they had removed 2 large nodes from deep in the armpit.  She said they were testing them for lymphoma.  This was not what we expected to hear.  Looking back my son is always tired, finds it hard to gain weight and is constantly getting coughs and chest infections, that take ages to clear.  We have to wait 2 weeks for the results but I sm fearing the worse.  Any advice appreciated