Nellie had an abdominal ultrasound today to look at why she keeps having blood in her urine - her urinary system was all entirely normal but the can confirmed that both her ovaries are cystic (the vet already suspected one was, but she has been asymptomatic) and now very enlarged. Her uterus is now also thickened. Nellie is 5 years old, lively and generally healthy although on regular pain meds for arthritic lower spine and hips. I now need to decide on treatment options for her. The logical option in terms of a 'fix' is that she has a full spay, but her age worries me with the anaesthetic and recovery. The vet is extremely experienced and says given how good her health is, she could easily have another 2 or more years left in her. Another option is to try a hormone implant. Iain (specialist vet) has used these in guinea pigs but says they often find the site very irritating and the implant generally fails within 12 months. Because she is already on regular pain meds he also feels pain isn't an issue for her at the moment, so just continuing as we are is also an option, but if she does have several more years of life in her this doesn't seem like such a fair option. Does anyone have any experience with spay in an older guinea pig (my Ethel did amazingly after hers but was 18 months younger when she had the op), or have a piggy that has had the implant put in and either done really well or really struggled with it?