<human>: I flew to california on friday morning hours later in the afternoon i noticed my chin on the left side had hard lump in  it, i recently had oral surgery and have not been sick or any infection in the surgery site to my knowledge, i had a bone graft done.
<bot>: Hi.it is best if you consult with a doctor, preferably a general surgeon, for medical and physical examination. Two things to consider primarily based from your description: 1. A possible cervical lymphadenopathy (inflamed lymph node) probably secondary to a recent upper respiratory tract infection 2. Other possibilities are fibrous, lipoma or cyst. Clinical examination from your doctor will be of great help. Further diagnostic examination such as neck ultrasound, ct-scan or x-ray and subsequent management (medical and/or surgical if indications are found) will be directed accordingly. Hope this helps. Good day!!~ Chat Doctor. 