ABSTRACT
Objective To study the radiological,clinicopathological features and prognosis of metanephric adenoma.Methods Two cases were selected,which underwent partial and radical renal resection.Examined the microscopic,immunohistochemical and radiological features of 2 metanephric adenoma cases.All patients were examined by ultrasound,CT and magnetic resonance imaging.Results They were lack of blood supply in imaging examination.The tumor cells were uniform with few eosinophilic cytoplasm.The chromatin is exquisite and lack pathological mitotic figure.The tumor cells were arranged in small tube or alveolar and locally showed papillary hyperplasia.Sometimes psammoma bodies were shown..Metanephric adenoma showed positive to Vimentin and CK.Conclusions Metanephric adenoma is a rare renal tumor mostly occur in single renal.And its morphological characteristic is diversity,so it's easy being misdiagnosed as malignant tumor.The pathologists should be careful and have the concept of metanephric adenoma when diagnosis.