<s>[INST] For the past month or more i have had a smallish whitish lump on my upper gum above tooth . I have been to dentist and they have done full x-ray of mouth and he couldn t find out what it was and it wasn t an abscess and I have been to my doctor and she didn t know what it was. My dentist is referring me to a specialist in hospital but said i could be waiting 3 to 4 months. What could this be? [/INST] Hi, Thanks for asking the query, Lump in the mouth can be because of several reasons, It can be because of abscess in the arising from the infected tooth, either it can be a gingival abscess due to accumulation of bacterial plague and calculus deep in the gum pockets, can be due to authors ulceration, can be due to irritation due to trauma or smoking and tobacco chewing. I would advise you to visit to Dentist get checkup done. Take an x-ray. Get complete mouth scaling and polishing done . Maintain a good oral hygiene. Hope this helps out . Regards... </s>