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Updated: Aug 29, 2026

Vessel-sparing Excision and Primary Anastomosis
Published on: January 7, 2019
Endoscopic management of milk of calcium-filled ureterocele stump
Jeremy Lieb1, Harrison M Abrahams, A K Das
1Pacific Urology, 2222 East Street, Suite 250, Concord, CA 94520, USA.
Abstract:
A 38-year-old woman with a duplicated right collecting system and a history of right upper-pole heminephrectomy was referred for persistent dysuria and right lower-quadrant abdominal discomfort. Imaging identified a remnant ureter and a ureterocele filled with what appeared to be a large homogenous stone. At cystoscopy, the ureterocele was incised with a holmium:YAG laser, releasing a large quantity of white milky fluid (milk of calcium). There was no evidence of any solid material. Endoscopic evaluation should be the first step in patients with stones in a ureteral stump because milk of calcium may be the etiology of what appears to be a large stone burden in an obstructed system.
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