Inflammatory Pseudotumor of the Urinary Bladder: Case Report with Image Findings

膀胱炎性假瘤：病例報告及影像特徵

黃彥霖(Yen-Lin Huang)；楊斐適(Fei-Shih Yang)

中華放射線醫學雜誌

33卷4期（2008 / 12 / 01）

265 - 270

英文

膀胱炎性假瘤是一種罕見的良性疾病，但臨床表現以及影像的呈現常與惡性膀胱腫瘤不易區分。我們報告了一位66歲男性病患因血尿來求診，初步影像上看似一個從膀胱頂部長出來的惡性腫瘤，但最終開刀後的病理結果是炎性假瘤。病人在求診過程中接受了靜脈注射尿路造影、電腦斷層攝影、核磁共振檢查。文中我們將描述膀胱炎性假瘤的特徵以及影像上的表現。

Inflammatory pseudotumor of the urinary bladder is a rare entity that mimics a malignant bladder tumor both clinically and radiographically. We report a 66-year-old man, presented with gross haematuria. Intravenous urography (IVU), computed tomography (CT), and magnetic resonance imaging (MRI) all demonstrated a pedunculated polypoid mass originated from the dome of the bladder and invaded the bladder wall. On MRI, the lesion exhibited intermediate signal intensity on T1WI image and a rim of low signal intensity with a high signal core on T2WI image, suggesting a sarcomatoid tumor with a myxoid core. The tumor was removed by partial cystectomy and the pathologic report revealed a benign pseudosarcomatous fibromyxoid tumor.