question: We noticed last night while giving bath to a 7 year old a swelling in his right armpit and some red scratches. He said it was itchy. We put cortizone and within minutes the swelling is gone but we found a soft lump/rubbery in it.  He has no symptoms, very energetic, jumps up and down like a monkey and never gets tired running around. Since it's weekend and we're having a heart attack due to worry we still went to urgent care facility but the attending physician only ran blood tests and urine tests upon our request. He said nothing systemic, it's just a lump and we should go to  his primary doctor. Still worried sick. We think of the worst and if we google this, cancer is the word you usually see. We have no history of cancer both sides immediate family. What could possibly this be? thank you!