Proliferating Character of Inverted Papilloma of the Urinary Bladder

Tsujimura, Akira; Y, Takano; Oka, Toshitsugu; Tei, Norihide; Satoh, Eiichi; Gotoh, Takayasu; Takaha, M; Kurata, Akihiko; Matsumiya, Kiyomi

doi:10.5980/jpnjurol1989.88.618

Cited by 3 publications

(4 citation statements)

References 10 publications

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“…Among our cases, 92.3% developed in the bladder, consistent with previous reports. In the literature, the reported incidence of IP ranges between 1.6% and 4.5% [15,16]. During the period of the present study, the number of operations for urinary tumor in our clinic was 319 and the incidence of IP was 4.07%, similar to the levels reported by other investigators [3,12].…”

Section: Resultssupporting

confidence: 87%

“…Finally, these authors pointed out two major problems in the clinical management of this disease: the tendency to recur (7-41.4%) [4,19] and the potential for malignant transformation (1-10.34%) into urothelial carcinoma [7,19]. In our study, the recurrence rate was similar to those in previous studies [7][8][9][10][11][12][13][14][15][16][17][18][19].…”

Section: Resultssupporting

confidence: 87%

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Evaluation of Urinary Inverted Papillomas: A Report of 13 Cases and Literature Review

Kilciler

Bedir

Erdemır

et al. 2008

The Kaohsiung J of Med Scie

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Inverted papilloma (IP) of the urothelium accounts for 2.2% of urothelial neoplasms. The aim of this study was to report the results of 13 patients with urinary IP, pointing out the clinical features, presentations, treatment options and outcomes. The mean age and mean follow-up periods of the patients were 60.23 +/- 3.25 (range, 44-81) years and 30 (range, 6-42) months, respectively. There was no coexistence of urothelial carcinoma with IP at presentation. Cystoscopy showed a solitary papillary tumor in the bladders of 11 patients and solid pedunculated tumors in the remaining two patients. The site of development was the bladder in 12 cases (92%) and ureter in one (8%) case. Transurethral bladder tumor resection was performed in 12 cases. For the case with IP in the ureter, nephroureterectomy was performed. Pathologic examination demonstrated that seven of the 13 cases were of the trabecular type and six were of the glandular type. Of the 13 cases, two (7%) had recurrence, at 1 year and 1 month and 1 year and 5 months from initial resection. The male to female ratio was 5.5:1. Initial symptoms included macroscopic hematuria in five cases, microscopic hematuria in four, and dysuria and microscopic hematuria in three; one case was asymptomatic. IPs of the urinary bladder are benign tumors that can be treated successfully by transurethral resection and fulguration of the tumor bed. In addition, these lesions must be followed up closely for recurrence and malignant transformation.

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Section: Resultssupporting

confidence: 87%

Section: Resultssupporting

confidence: 87%

Evaluation of Urinary Inverted Papillomas: A Report of 13 Cases and Literature Review

Kilciler

Bedir

Erdemır

et al. 2008

The Kaohsiung J of Med Scie

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“…In the literature, the reported incidence of IP ranges between 1.6% and 4.5%. [14,15] During the period of the present study, the number of operations for bladder tumor in our hospital was 663 and the incidence of IP was 3.6%, similar to the levels reported by other investigators. [8] In addition, a significant number of patients in the current study (75%, 18 of 24 cases) had a smoking history, suggesting a possible link between tobacco smoking and IP.…”

Section: Discussionsupporting

confidence: 84%

Inverted papilloma of the urinary bladder: Rigorous surveillance needed? An Indian experience

et al. 2010

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“…The typical gross appearance of inverted urothelial papilloma of the bladder has been reported to be that of a nonpapillary noninvasive smooth-surfaced polypoid lesion with or without a stalk, and the morphologic appearance of the tumor on MRI was consistent with both the gross appearance of and the cystoscopic findings for the inverted urothelial papillomas of the bladder evaluated in this study [1,11]. Because urothelial carcinoma of the bladder typically has a papillary surface, the smooth nonpapillary surface of inverted urothelial papilloma of the bladder, as observed on MRI, might be a useful finding for differentiating inverted urothelial papillomas from papillary urothelial carcinoma of the bladder.…”

Section: Discussionsupporting

confidence: 78%