My son (9) got an abscess in his jaw a few months ago which had to be surgically drained because the antibiotics weren't working (he was given an antibiotic that wasn't strong enough, then when he was switched to clindamyacin the infection was too severe for it to work) . He got another infection a couple of weeks ago, this time, the antibiotics were administered in time and the infection went away. It is not caused by a tooth, that has been ruled out. He does have a swollen lymph node, which I know is common with infection, but he also has a hard immovable mass which seems to wrap around the lower part of his jaw bone, just in front of the lymph node. I do have an appointment with an ENT, but it isn't for a couple of weeks. I am just wondering if I should be worried about something serious.