According to your description, I think the focus is probably swollen lymph nodes. I suggest you do a biopsy, the location is more suitable. Any kind of image examination has its limitations. If you can't get an accurate result, you should consider this problem every day. Pathology is the gold standard, and accurate examination is also the best treatment process. You can also send photos to see.

(Dr. Du from the Third Hospital of Hebei Medical University solemnly reminds me that I can't fully understand the condition because I can't see the patient face to face. The above suggestions are for reference only. Please go to the hospital for specific diagnosis and treatment under the guidance of a doctor! )