Hi,Dear Good Evening,
I went through your query and understood your concern.
I my opinion--Cause and Treatment- on the data given from you is as follows-
a-That lump of your son-is - infected
hematoma of the shin-leg with
cellulitis and needs to be shown to a ER Surgeon.
Treatment-Surgeon would advise following treatment
-Consult a ER primary doctor or Surgeon to treat this.
a-Anti-inflammatory pain killers for 5 days
b-
Cold Compresses with Ice packs.
c-Antibiotics to control infective cellulitis.
d-If no response and lump increases -Surgical Drain by Surgeon would resolve your lump issue.
Hope this would resolve the lump issue of shin of the legs.
This would help you to plan treatment with your doctor who would treat it accordingly.
Hope this resolves your query.Wish you fast recovery.
Wellcome for more further queries in this regard.