Naganuma T, Yasumoto R, Kawano M, Yamakoshi Y, Masuda C, Kyo M, Kawashima H, Sugimura K, Wada S, Yamamoto K, Kishimoto T
Department of Urology, Osaka Munisipal Juso-shimin Hospital.
Hinyokika Kiyo. 1998 Nov;44(11):833-7.
We report 2 cases of leiomyoma of the urinary bladder. A 41-year-old female visited our hospital with the complaint of pollakisuria. A solid tumor of the urinary bladder was found by ultrasonography. A large shadow defect at the left-anterior wall was shown by drip infusion pyelography (DIP). Computed tomographic scan (CT) and magnetic resonance imaging (MRI) also revealed a large tumor. T1-weighted image revealed a homogeneous low intensity tumor and T2-weighted image disclosed heterogeneous low intensity tumor. Cystoscopy revealed a large submucosal tumor. Partial cystectomy was performed, and she has had neither recurrence nor metastasis for 36 months. A 32-year-old male was referred to our hospital with the complaint of macrohematuria. A solid tumor of the urinary bladder was found by ultrasonography. A shadow defect was not clearly detected by DIP. A large tumor was detected on the anterior wall by MRI. T1-weighted image showed a homogeneous low intensity tumor and T2-weighted image disclosed a high intensity tumor. Cystoscopy revealed a submucosal tumor on the anterior wall. Urine cytology did not suggest a malignancy. The biopsied specimens revealed only an inflammatory change in the mucosa. Partial cystectomy was carried out. He has had neither recurrence nor metastasis for 29 months. Histological diagnosis in both cases was leiomyoma of the urinary bladder.
我们报告2例膀胱平滑肌瘤。一名41岁女性因尿频主诉前来我院就诊。超声检查发现膀胱有实性肿瘤。静脉滴注肾盂造影（DIP）显示膀胱左前壁有一大片阴影缺损。计算机断层扫描（CT）和磁共振成像（MRI）也显示有一个大肿瘤。T1加权图像显示肿瘤呈均匀低信号，T2加权图像显示肿瘤信号不均匀且呈低信号。膀胱镜检查发现一个大的黏膜下肿瘤。行膀胱部分切除术，术后36个月无复发及转移。一名32岁男性因肉眼血尿主诉转诊至我院。超声检查发现膀胱有实性肿瘤。DIP未清晰检测到阴影缺损。MRI显示膀胱前壁有一个大肿瘤。T1加权图像显示肿瘤呈均匀低信号，T2加权图像显示肿瘤呈高信号。膀胱镜检查发现前壁有一个黏膜下肿瘤。尿细胞学检查未提示恶性病变。活检标本仅显示黏膜有炎症改变。行膀胱部分切除术。术后29个月无复发及转移。两例的组织学诊断均为膀胱平滑肌瘤。
