“…For patients with renal anastomosing hemangioma, as with other vascular tumors, the occurrence of hematuria can prompt earlier detection and potentially enable more conservative approaches. 11,14,21,22,25 Although CT and magnetic resonance imaging may yield highly suggestive results, these may still not provide definitive diagnoses for 29 Clinical and imaging characteristics denoting a neoplastic condition, particularly Wilms' tumor among pediatric patients, therefore still provide compelling indications for nephrectomy or chemotherapy. Whereas neoadjuvant chemotherapy, in accordance with the SIOP protocol, has the potential advantage of making the eventual excision simpler and safer, it foregoes with having a more accurate pretreatment histologic diagnosis and would expose patients with possibly benign lesions to chemotherapy-associated risks.…”