Denny, a 35-year-old Venezuelan lawyer, knew the bump must be a side-effect of liquid silicone that had been injected in her buttocks.
It had moved into her back and was putting pressure on her spine.
"It was a terrible shock. I couldn't walk. That's how my agony started," she says.
Buttock injections are one of many common cosmetic procedures Venezuelan women undergo to achieve what society deems to be beautifulMen also get injected to boost their pectoral muscles, though the numbers are lower..
The injections are made using a biopolymer silicone. The fact that this is injected freely into the body makes it more dangerous than implants, where silicone gel is contained within a shell.
symptoms can appear years after the procedure.
Patients can suffer from allergic reactions and chronic fatigue. If the liquid migrates to other areas of the body it can cause intense joint pain.
In Denny's case, the silicone moved up into her back, putting painful pressure on her spine and making it difficult to walk

Dr Slobodianik shows what can happen when buttock injections go wrong