Conversation: The conversation between human and AI assistant.
[|Human|] hi im a medical marijuana smoker and ive been smoking marijuana   everyday for about a year and ive recently found a small dime size lump maybe smaller under the right side of my jaw. ive had it for maybe a month and a half it hasnt gotten any bigger and i can move it around a little bit and it doesnt hurt. what could this be?one side of my family has a history of lung and mouth cancer
[|AI|]  Welcome to Chat Doctor .1. Most possible cause could be submandibular gland cyst - due to ductal blockage.2. It can be asymptomatic, mobile, gradual increase in size, blockage due to calculus or stricture to the ducts after any infection.3. Second possible cause could be lymph nodal enlargement after any systemic infection / inflammation.4. Suggest an ultrasound to confirm the nature of lesion, its source and its extensions.5. It doesn't seems like a cancer in any way. Recommend stopping marijuana it may affect in long term. Good luck. Hope it helps you. Wish you a good health. Anything to ask ? Do not hesitate. Thank you.