Angioblastoma is a highly vascular differentiated benign tumor arising from the nerves of the brain and spinal cord. Most hemangioblastomas arise from a single lesion. There are two basic forms of hemangioblastoma, including solid and vesicular. Solid tumors are composed almost entirely of cells, while vesicular tumors are composed of a small number of cells accompanied by a large number of vesicles. What tests should be done for hemangioblastoma? Angioblastoma can be diagnosed by contrast-injected computed tomography or magnetic resonance imaging. In these tests, hemangioblastoma will appear as a bright white lesion in the brain or spinal cord after the injection of contrast. Angioblastoma often resembles tumors such as meningiomas, metastatic brain tumors or vascular lesions such as arteriovenous malformations. Angiography of the brain can sometimes be used to help diagnose hemangioblastoma because of the abundance of blood vessels in these tumors. What are the most common confusions for hemangioblastoma? 1. Cerebellar astrocytic glioma: When cystic lesions are predominant, the wall nodules are often large and may have calcification. MR can sometimes show vascular shadows in the tumor of hemangioblastoma, which can provide more information for its differential diagnosis. 2. Metastases: nodular or circumferential enhancing masses, often with regular and smooth edges and more obvious peri-tumor edema. It is generally not difficult to distinguish.