I need infput especially from other vets. My ferret Mick had an ultra sound done today. This is what the doc had to say: Ultrasound: found Approximately 1 cm diameter fluid (clear) filled cystic structure without identifiable surrounding architecture. May be kidney visualized under it-but not definitive. Spleen and urinary bladder each visualized separately. Surgery: Left adrenal gland enlarged 1 cm and removed. Enlarged left kidney smooth and regular exterior. The vet is not sure what that fluid filled sac is. I have the picture of the ultrasound. The vet is looking for any input anyone might have especially other vets. Thank you in advance. Feel free to cross post this letter. Email me at: [log in to unmask] Julie [Posted in FML issue 3862]