Conclusion
Renal inflammatory myofibroblastic
tumor (IMT) is extremely rare, when it occurs in children, it is
difficult to distinguish from nephroblastoma both clinically and
radiologically, and the final diagnosis and differential diagnosis rely
on pathology and immunohistochemistry. The analysis of their reliable
imaging characteristics is of great importance to determine the
appropriate diagnosis and patient management to avoid excessive
treatment. In addition, IMT should be considered as a differential
diagnosis when presented as a large renal mass in children with pain and
fever. Furthermore, the features of MRI signal could probably predict
pathological classifcation in a certain sense.