I went to the dentist for a routine checkup last Thursday. Dentist found a lesion behind my 24 and 25th teeth (bottom incisors) via x ray. I have no symptoms and no visible lesions or swollen glands. I was referred to oral surgeon for a second opinion. Oral surgeon just took my medical insurance information because he wants to perform a biopsy in about a month. Other details. I've had this spot since at least 2012 (old xrays) its only a little more prominent now. I also have an autoimmune condition and take immunosurpressants.