About one week ago I woke up with a pain in my back, near the center, just left of my spine. I couldn't reach it, so I asked my husband to feel it and there was a lump there, and very painful to the touch. For the next two - three days it continued to ache with pain radiating outward and deep into my back. There was no "head" or pore that seemed to be the source, just a smooth, hard lump that started out as a crescent shape. By Friday, it was so painful I decided to go to the doctor. He didn't know what it was, but didn't feel comfortable doing anything to it as it was large and deep. It had also grown into a 4cm diameter round lump. He sent me to a surgeon. The surgeon was not sure what it was either, though he suspected it was a cyst or lipoma that had bled into itself. He inserted a needle to see if any puss was present as well as doing an office-level ultrasound (rough). There was no presence of puss. We decided to wait over the weekend, still thinking it was a cyst, figuring it would develop a puss pocket by Monday that he could drain. However, upon returning to the office, there was no puss pocket or any other indication that it was a cyst. He still thought it could be a lipoma, but the lump is hard and not fluid at all. My husband has several lipomas and this doesn't seem to match the characteristics I am familiar with. He recommended that I have a hospital ultrasound done to determine what it is. I went today and I'm awaiting the results. you could clearly see a mass on the ultrasound. An abcess and/or cyst was ruled out due to no presence of fluid (her notes). I'm curious if anyone out there has heard of something like this and what it could be? It's very unsettling to say the least... There is no longer the severe pain, more just a tenderness upon touch. Some background, I am a healthy 32 year old female with no history of lipomas or anomalous growths.