What are extramedullary lesions?
An intradural extramedullary tumor is a spinal cord tumor that causes spinal cord compression — nerves in and around the spinal cord are compressed as the tumor grows in size. The vast majority of these tumors are benign and treated with surgery.
What are intramedullary lesions?
Intramedullary spinal cord tumors (IMSCTs), like the one depicted in the image below, refer to a subgroup of intradural spinal tumors that arise from cells within the spinal cord, as opposed to adjacent structures such as the nerve roots or meninges.
What is intradural extramedullary lesion?
Intradural-Extramedullary tumors grow within the spinal canal but outside of the nerves. These tumors are usually slow-growing and benign, but can cause some pain and weakness.
What is extramedullary disease?
(2) Extramedullary disease is secondary to a hematogenous spread and refers to soft-tissue tumors arising from, or the PC infiltration of, an anatomical site distant from the bone marrow (mostly liver, skin, CNS, pleural effusion, kidneys, lymph nodes, and pancreas).
Which is the mainly intramedullary tumor?
Ependymomas and astrocytomas are the most commonly encountered intramedullary spinal cord tumors, followed by hemangioblastomas.
What is the most common type of extramedullary spinal neoplasm?
Etiology. The most common primary intradural extramedullary neoplasms are meningioma (20-30%) and schwannoma (15-50%), followed by neurofibroma 1. Less common entities include solitary fibrous tumor/hemangiopericytoma and malignant peripheral nerve sheath tumor.
What is extramedullary disease in AML?
Extramedullary leukemia is the presence of leukemic cell aggregates in the form of solid tumor outside that of bone marrow (1). It is most commonly seen with acute myeloid leukemia and less commonly with other forms of leukemia like acute lymphoblastic leukemia (2).
Can MRI detect cauda equina syndrome?
MRI scan for cauda equina syndrome These symptoms should prompt medical practitioners to suspect cauda equina syndrome. However, the only way a firm diagnosis can be achieved is with an MRI scan. A patient should therefore be sent for an emergency MRI scan, meaning within around four hours of presenting to hospital.