I have a oval shaped swollen tender spot on the inside center of left foot app 3x3 near ankle n running to arch could program from lt cause? mobile

Tenderness: Although its hard to understand from your phrasing, lumps or swollen areas on the bottom of the foot could be many different things. Common pathologies include plantar fibromatosis (benign fibrous tissue growth), abscess, foreign body, callus, inflammation, etc. I'd recommend getting to your physician for a referral to a podiatric (foot) specialist and imaging (xrays).