Cerebral Arteriovenous Malformations (AVM) are the most common type of intracranial vascular malformation and are the second most common cause (after cerebral aneurysms) of intracranial hemorrhage. Endovascular embolization and Stereotactic Radiosurgery as a single or combined treatment are useful alternatives for the management of AVMs high risk for surgery, however adequate training, equipment and experience in these technologies are necessary.

Cerebral vasospasm can be defined as the focal or diffuse narrowing of the large and medium caliber capacitance arteries at the base of the brain that follows a hemorrhage in the subarachnoid space. Aneurysmal subarachnoid haemorrhage is the major etiology for vasospasm, although it has also been seen after bleeding from an arteriovenous malformation, tumors, or traumatic brain injury. Its diagnosis is not always easy and may have a temporary course.

The authors report a rare case of dorsal-lumbar spine hydatidosis. The patient is a 15-year-old girl from Ica, Peru who presented persistent low back pain and severe progressive paraparesis of one year of evolution, she was transferred to the Hospital Maria Auxiliadora. Radiographs, computed tomography and MRI studies showed multiple vertebral cystic images at L1 and L2 levels with severe spinal canal invasion which were reported as probable aneurysmal bone cyst.

The authors present a technique in which cervical disectomy is performed without fusion and instrumentation. According to them, this technique is a suitable surgical treatment for the majority of cases of prolapsed cervical disc, does not require fusion and avoids specific problems and complications associated with instrumentation and fusion. They continue the follow-up study of these patients, but until these publication date no considerable late problem has become evident.