I have pkd. my doctor ordered an mri on my brain to check for aneurysms. turns out i have one 2mm big. i have an appt with a neurologist in a couple weeks, can i ask for a surgery? maybe endovascular? i do not want it to stay there and keep growing?

Risk of rupture for a 2 mm aneurysm is very low so I do believe neurologist will recommend observation with serial MRA. Because of your underlying PCKD, chance of new aneurysm may develop in the future is high so you will need serial imaging tests for detection & the current aneurysm can be monitored as well. Aneurysm can be clipped or coiled if it gets bigger quickly or when it's larger than 7 mm

Trust you mean a Neurosurgeon, and hopefully, a surgical opinion will be forthcoming. A lot depends upon the size, location, and symptoms, but larger aneurysms are at higher rupture risk, which is certainly to be avoided. Your proactive approach is appropriate.