Hello, my eight-week old son has what appears to be a small lump or bulge in a vein on the back left side of his head.  Is this something I need to be concerned about?  I am especially worried because my little brother died of a brain aneurysm caused by an AVM in his brain stem.  Thank you
Hi, dairy have gone through your question. I can understand your concern. Your son may have some enlarged posterior cervical lymph node.  It may be due to reactive hyperplasia, tuberculosis or lymphoma. Or he may have some soft tissue tumor or skin adnexal tumor.  He should take a course of antibiotics. If it doesn't respond to treatment then biopsy diagnosis is advisable. Consult your doctor and take treatment accordingly. Hope I have answered your question, if you have doubt then I will be happy to answer. Thanks for using Chat Doctor. Wish you a very good health.