<s>[INST] Hi I have a 2 swollen cyst- tumor in my right side of my neck, for 1 mo. and 4 days now, went to my doctor and he conduct a complete blood test and ultrasound of it. He give an antibiotic Penicillin and i went back to his clinic after 1 week.He conduct an ultrasound again. He refer me to a ENT specialist , and now done with biopsi. My doctor says he cannot say anything unless i am done with the test. I am waiting for my CT scan schedule now. What do you think is this? It scares me alot coz i am a motnher of a yrs old boy and my husband has a mandibular cancer also. Thank you! [/INST] Hi and welcome to Chat Doctor. Thank you for the query. Most such lesions are benign and usually indicate swollen lymph node, benign cyst, fibrous or lipoma. So I am sure this is your CAE. Of course, malignancies should be ruled out by biopsy and this will verify the exact diagnosis. Try not to worry because it won't change anything, but cancers are very rarely diagnose when there is such symptomatology. Wish you good health. Regards </s>