Inflammatory myofibroblastoma of the kidney
- VernacularTitle:肾脏炎性肌纤维母细胞瘤
- Author:
Tao LI
;
Shurong GONG
;
Zifu CHEN
- Publication Type:Journal Article
- Keywords:
Kidney neoplasms;
Myofibroblast;
Pathology;
Immunohistochemistry
- From:
Chinese Journal of Urology
2001;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To report the diagnosis and treatment of a case of renal inflammatory myofibroblastoma. Methods A 30-year-old man presented with space-occupying lesion of the kidney with no symptoms in physical examination.No abnormality was found in the laboratory tests.B-ultrasound showed a clear-edged,solid mass which was 4.5 cm?3.7 cm in size and had heterogeneous echo in the upper,middle part of the left kidney.CT showed a similar value of the mass to that of the normal tissue.Enhanced MRI showed heterogeneous intensification of the mass whose signal was slightly lower than that of the normal tissue.Preliminary diagnosis of renal cancer was made. Results Nephrectomy was performed.On pathological examination the tumor was mainly composed of spindle-shaped,fibrous cells, and positive staining for Vimentin,SMA and HHF35 were observed immunohistochemically.Inflammatory myofibroblastoma of the kidney was diagnosed.Follow-up of 54 months showed no recurrence and metastasis of the tumor. Conclusions Inflammatory myofibroblastoma is a kind of rare,benign or low-grade malignant tumor of the kidney, and the clinical diagnosis is often difficult.Definite diagnosis relies on pathology.For the sake of avoidance of resecting the kidney by mistake, pathological examination is the preferred choice during operation.
