A congenital dilation of the distal portion of the ureter, frequently but not exclusively associated with ureteral duplication.
Clinical Image & Complications
Large ureteroceles can cause acute urinary obstruction, hydronephrosis, painful vaginal mass, hematuria, dysuria and urinary tract infections. A chronic obstruction may lead to loss of kidney function.
Abnormal development between the accessory ureteral bud and urogenital sinus or a defect in the muscular wall of the ureter.
On ultrasound the ureterocele within the bladder appears like a cyst within a cyst. During live examination the ureterocele can be seen to inflate and deflate.
Traditionally the diagnosis of an ureterocele was made with an intravenous pyelogram (cobra head sign).
Usually conservative follow-up. Transurethral resection in case of serious symptoms.
You might also find interesting other articles on pelvic floor ultrasound:
- Tam, T., Pauls, R.N. Embryology of the urogenital tract; a practical overview for urogynecologic surgeons. Int Urogynecol J 32, 239–247 (2021). https://doi.org/10.1007/s00192-020-04587-9