Ann Rehabil Med.  2017 Apr;41(2):332-336. 10.5535/arm.2017.41.2.332.

Falsely Elevated Postvoid Residual Urine Volume in Uterine Myoma

• Kim TH
• Kim HS
• Park JW
• Lim OK
• Park KD
• Lee JK

• KMID: 2389495
• DOI: http://doi.org/10.5535/arm.2017.41.2.332

Abstract

Precise measurement of postvoid residual (PVR) urine volume is a key factor in assessing patients with voiding dysfunction, including those with lower urinary tract problems. The safe and noninvasive ultrasound bladder scan is the preferred mode to measure PVR volume. However, this procedure has a false-positive rate up to 9%, in the presence of ovarian cysts, renal cysts, ascites, or uterine myoma with cystic degeneration. Until now, cystic lesions are known to cause false positivity in ultrasound bladder scanner. However, we encountered falsely-elevated PVR in two cases of non-cystic uterine myomas. We present these cases with detailed radiologic images and volume measurement data.

Keyword

Myoma; Ultrasonography; Post-void residual volume

MeSH Terms

Ascites
Female
Humans
Leiomyoma*
Myoma
Ovarian Cysts
Ultrasonography
Urinary Bladder
Urinary Tract

Figure

• 

  Fig. 1 Voiding cystourethrogram images after infusion of radiocontrast media in varying amounts. After infusion of 200 mL of radiocontrast media, the postvoid residual (PVR) volume measured by bladder scanner was 460 mL, and filing defects (arrow) to be estimated as myoma mass were observed (A). After infusion of 400 mL of radiocontrast media, the PVR volume measured by the bladder scanner was 470 mL, and no filing defect was observed as the bladder urine volume increased (B). After infusion of 450 mL of radiocontrast media, 410 mL of urine was voided, but the PVR volume measured by the bladder scanner was 270 mL (C).

• 

  Fig. 2 Endovaginal ultrasonography shows masses of various size in the uterus. Especially, the biggest sized mass was found in the uterine fundus with 6.10 cm×5.02 cm (A). The second biggest mass was shown in the anterior fundal area with 4.69 cm×3.51 cm (B).

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