instruction: hi doctor I have a unilateral submandibular lymph node swelling on the right hand side of the neck I had an ultrasound and at this time the lymph node measure 6 am and the onset were sudden with pain after three course of antibiotics augmenting two doses and clindamycin one dose I was referred to have another ultrasound this was after two months of the initial appearance of the lymph node this ultrasound scan showed the lymph node had become am but was still present so the doctor ordered fac the results of this have come back and there is no sign of metastasis or no sign of to lymphadenopathy the doctor has suggested yet another course of antibiotics of doxycycline and remeasure the lymph node after three weeks the fac said it was an inflammatory lymph node does this mean reactive lymph node what else could be causing this
output: hi I want you to be completely calm because according to the course of the lymph node enlargement symptoms and investigations the lymph node enlargement is just an inflammatory reaction it is not a tumor at all just complete your antibiotic treatment then follow up on the lymph node again just for assurance the lymph node may decrease in size but never comes to its normal size again this is normal now about causes any neck mouth or pharyngeal inflammation can cause inflammatory enlargement of a submandibular lymph node even without the previously mentioned inflammations a submandibular lymph node inflammation can start by itself as the lymph node works as a filter for the blood picking up pathogenic microorganisms