I am 77 yrs old and just discovered a very small dent in the middle of my back next to my spine. No pain , no other symptoms. Feels like a Avery small cyst or lump right next to it.actually I did notice it a couple weeks ago and it havent changed or got ton larger. Should I be concerned. Thank you  tony r.
Hi. Thanks for your query. Most probably this can be a sebaceous cyst. It may not really need a treatment as it is not growing. Since this is at the back, it is better to get this confirmed by showing to a Surgeon. You can then keep a watch and get it removed if it enlarges or shows signs of infection.