Analysis of histologic characteristics of inflammatory myofibroblastic tumor in urinary bladder
10.3760/cma.j.issn.1006-9801.2011.06.001
- VernacularTitle:膀胱炎症性肌纤维母细胞性肿瘤病理特征分析
- Author:
Shan ZHENG
;
Xingang BI
;
Dong WANG
;
Jun TIAN
;
Xiuyun LIU
;
Jianhui MA
;
Ning Lü
- Publication Type:Journal Article
- Keywords:
Urinary bladder;
Inflammatory myofibroblastic tumor;
Immunohistochemistry
- From:
Cancer Research and Clinic
2011;23(6):361-363,371
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the pathologic features, diagnosis and differential diagnosis of inflammatory myofibroblastic tumor (IMT) in urinary bladder. Methods It was retrospectively reviewed for the characters of pathologic features and immunohistochemistry type in 3 patients diagnosed IMT in urinary bladder. Results 3 patients including 1 female and 2 male were 15, 36 and 60 years old (mean age 37),respectively. All patients underwent partial cystectomy. All cases presented single or multiple, polypoid or nodular mass(es), ranging in size from 1.8 to 5.5 cm. Microscopically, the tumor cell grew in invasive pattern, and were spindled with prominent nucleoli. The lesions varied from highly myxoid to highly cellular lesions. The mitotic rates were invisible. AE1/AE3, CK18 and ALK were positive in IMT. Follow-up was available for 3 patients (2, 18 and 18 months, respectively). None developed recurrences or metastasis. Conclusion IMT in urinary bladder are rare tumors. IMT grows in invasive pattern, and are spindled with prominent nucleoli.The main differential diagnosis of IMT includes embryonal rhabdomyosarcoma in juvenile, sarcomatoid urothelial carcinoma and leiomyosarcoma in adult.
