PT - JOURNAL ARTICLE AU - Yazan Hassona AU - Mohammad Wael Saleh AU - Hamza Alkhawaldeh AU - Ruba Al Abweh TI - Unusual cause of tooth mobility AID - 10.1136/bcr-2020-235086 DP - 2020 Dec 01 TA - BMJ Case Reports PG - e235086 VI - 13 IP - 12 4099 - http://casereports.bmj.com/content/13/12/e235086.short 4100 - http://casereports.bmj.com/content/13/12/e235086.full SO - BMJ Case Reports2020 Dec 01; 13 AB - We describe a case of a 71-year-old otherwise healthy man who presented to the dental clinic with the chief complaint of mobility involving his upper left molar teeth. The patient was a febrile, and clinical oral examination revealed localised grade II mobility and absence of gingival swelling, erythema or sinus tract. Orthopantogram revealed a poorly defined radiolucency involving the upper left second and third molar teeth. Surgical exploration of the involved area was performed and revealed the presence of a ‘jelly like’ brown tissue that fragments easily. Pathological examination confirmed the diagnosis of diffuse large B cell lymphoma.