Hi Doctor,my 5 year old girl has a neck lump from January onwards on the left side of neck midline.its movable ,painless,somewhat hard type.we noticed it during a cold infection of hers,we immediately took her to doc.he said its due to cold.even though cold subsided,the lump remained as such.it was back in jan.now she is recovered from cold,but has cough,has wax in her ears(not sure infected or not).in between during the second visit doc gave antibiotics(mox) for 5 days.on the fourth day.it reduced a little bit,it has not completely gone.it remains still there.is there any cause for concern?will scan or xray help in anyway for the diagnosis?or should we go for blood tests?