Mesenchymal tumors of adult kidney

Mesenchymal tumors of the kidney, although infrequently encountered, constitute a wide spectrum of lesions. The relative rarity of these tumors means that in some instances criteria to differentiate between benign and malignancy are currently incompletely defined. More recently a variety of novel stromal tumors have been characterized, with hemagioblastoma and myopericytoma being notable examples. The identification of a subset of spindle cell tumors as synovial sarcoma, on the basis of the presence of a characteristic genetic translocation, has facilitated the correct classification of a number of tumors previously labelled as fibrosarcoma, malignant fibrous histiocytoma, or more recently cystic embryonal sarcoma.
Source: Seminars in Diagnostic Pathology - Category: Pathology Authors: Source Type: research