World J Mens Health.  2012 Dec;30(3):192-194.

Inverted Papilloma of the Prostatic Urethra Arising in a Juvenile

• Shin YS
• Park JK

Abstract

Inverted papilloma of the urinary tract is a rare benign lesion. We report, to our knowledge, the first case of inverted papilloma of the prostatic urethra arising in a juvenile. Our patient was referred for evaluation of painless, gross hematuria and voiding difficulty. Transrectal sonography demonstrated a 1.4 cm papillary lesion on the medial aspect of the prostatic urethra. Cystoscopy showed a solitary, papillary tumor on the prostatic urethra. Transurethral resection was performed and histological examination showed an inverted papilloma.

Keyword

Prostate; Papilloma; Inverted; Juvenile

MeSH Terms

Cystoscopy
Hematuria
Humans
Papilloma
Papilloma, Inverted
Prostate
Urethra
Urinary Tract

Figure

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  Fig. 1 Urethroscopy of the prostatic urethra shows a smooth, well marginated polypoid mass, white grayish in color, and stalks from the prostatic urethra above the verumontanum.

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  Fig. 2 Transrectal ultrasonography shows a 1.4 cm echogenic mass that originated from the prostatic urethra.

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  Fig. 3 The prostatic mass was removed after transurethral resection.

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  Fig. 4 The microscopic findings show that the fibrovascular core of tumor cells is oriented toward the lamina propria and there is an inverted pattern of growth with a papillary projection (H&E stain, ×100).

Reference

1. Spevack L, Herschorn S, Srigley J. Inverted papilloma of the upper urinary tract. J Urol. 1995. 153:1202–1204.

2. Kim JH, Lee KH, Doo SW, Choi MS, Lee DH, Moon KH, et al. Inverted papilloma in the prostatic urethra. Korean J Urol. 2006. 47:214–216.

3. Potts IF, Hirst E. Inverted papilloma of the bladder. J Urol. 1963. 90:175–179.

4. Cheng CW, Chan LW, Chan CK, Ng CF, Cheung HY, Chan SY, et al. Is surveillance necessary for inverted papilloma in the urinary bladder and urethra? ANZ J Surg. 2005. 75:213–217.

5. Sung MT, Maclennan GT, Lopez-Beltran A, Montironi R, Cheng L. Natural history of urothelial inverted papilloma. Cancer. 2006. 107:2622–2627.

6. Witjes JA, van Balken MR, van de Kaa CA. The prognostic value of a primary inverted papilloma of the urinary tract. J Urol. 1997. 158:1500–1505.

7. Asano K, Miki J, Maeda S, Naruoka T, Takahashi H, Oishi Y. Clinical studies on inverted papilloma of the urinary tract: report of 48 cases and review of the literature. J Urol. 2003. 170:1209–1212.