Hi my son is 3 month old. since three days we saw swollen in the left arm pit it get little increasing, so went to doctor today they done X-ray and ultrasound, but they said there is no mass or did not see any thing. they said it is a lymph node, so we dont know what is it. what is the real problem. I appreciate your reply.
Hi, swollen armpit in a 3-month-old child can be a lymph node swelling due to BCG lymphadenitis. It is seen that in some child Chat Doctor.  Since you have already ruled out other causes by doing ultrasound and X-Ray chances of BCG lymphadenitis are quite high. In BCG lymphadenitis, nothing needs to be done, and only monitoring is done to see whether the size of lymph node increases or not. In most cases the size of lymph node decrease and the thing needs to be done. Take care.