Case of inverted papillary urothelial carcinoma in the ureter

被引：0

作者：

Nirei, Takuma ^{[1
]}

Nakaigawa, Noboru ^{[1
]}

Matsumura, Mai ^{[2
]}

Kataoka, Toshiaki ^{[2
]}

Nagasaka, Takahiro ^{[1
]}

Aomori, Kota ^{[1
]}

Ito, Yusuke ^{[1
]}

Muraoka, Kentaro ^{[1
]}

Yao, Masahiro ^{[1
]}

机构：

[1] Yokohama City Univ Med, Dept Urol, 3-9 Fukuura,Kanazawa Ku, Yokohama, Kanagawa 2360004, Japan

[2] Yokohama City Univ Med, Dept Pathol, Yokohama, Kanagawa, Japan

来源：

IJU CASE REPORTS | 2022年 / 5卷 / 02期

关键词：

inverted papilloma; ureteral neoplasms; ureteroscopy; urologic neoplasms; urothelial carcinoma; GROWTH-PATTERN; URINARY-BLADDER; CLASSIFICATION; LESIONS; TUMORS;

D O I：

10.1002/iju5.12403

中图分类号：

R5 [内科学]; R69 [泌尿科学（泌尿生殖系疾病）];

学科分类号：

1002 ; 100201 ;

摘要：

Introduction: Urothelial neoplasms with a varus growth pattern are rare, and few urologists have encountered inverted urothelial carcinoma of the ureter. Case presentation: An 82-year-old man was referred to our hospital for investigation of gross hematuria. Magnetic resonance imaging revealed nodules measuring 1-2 mm in diameter in the left upper ureter with slight reduction in signal intensity on diffusion-weighted imaging. Ureteroscopy showed a pedunculated smooth tumor that had the appearance of an inverted papilloma rather than the papillary shape typical of urothelial carcinoma. The tumor was biopsied and histopathological examination revealed a noninvasive, low-grade urothelial carcinoma with inverted multiple layers. Laparoscopic radical nephroureterectomy was subsequently performed, and a pedunculated tumor measuring 20 mm in diameter was found in the left upper ureter. The histopathological diagnosis was inverted papillary urothelial carcinoma, low-grade, pTa, pN0. Conclusion: This report provides the first clinical description of inverted papillary urothelial carcinoma of the ureter.

引用

页码：95 / 98

页数：4

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