Fotios N Tzortzidis

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BACKGROUND CONTEXT Lumbar radiculopathy after lumbar spine surgery is an alerting sign usually caused by either a recurrent disc herniation or epidural hematoma. However, pressure on a spinal nerve root may also be exerted by a retained piece of Surgicel used to achieve hemostasis during lumbar spine surgical procedures. PURPOSE To describe a case of(More)
Internuclear ophthalmoplegia (INO) is a common sign of multiple sclerosis in young patients and of vascular diseases in older people. Traumatic bilateral internuclear ophthalmoplegia following severe head injuries may occur. We present the unusual case of a young patient suffered from bilateral INO as an isolated finding after a minor head injury, without(More)
BACKGROUND Intrathecal morphine pumps are being increasingly used in patients with benign pain who have a longer life expectancy than cancer patients. Newer complications may be encountered. CLINICAL PRESENTATION We report a complication that occurred in a 48-year-old woman who presented with intractable lower back pain 18 months after morphine pump(More)
AIM The challenge in large cranial base meningiomas is total resection of the tumor with the least possible mortality and morbidity. During the last two decades the technical approaches for anterior skull base tumors have shown a considerable progress, providing a wide exposure with minimal brain retraction. The purpose of this study is to present our(More)
OBJECTIVE To evaluate patient clinical outcome and survival at long-term follow-up after aggressive microsurgical resection of chondrosarcomas of the cranial base. METHODS Over a 20-year period, 47 patients underwent 72 operative procedures for resection of cranial base chondrosarcomas. Thirty-three patients were previously untreated, whereas 14 patients(More)
Glomus jugulare tumors always invade the jugular bulb and sigmoid sinus, making it difficult to resect these tumors totally without sacrificing the involved sinus. Although the sinus can be sacrificed safely in most patients, a few patients will have serious consequences. Reconstruction of the jugular bulb using a saphenous vein graft may enable tumor(More)
Neoplasms of the sellar region are entities with a large differential diagnosis. Although paraganglionic cells have not been demonstrated in the pituitary or adjacent structures, the existence of sellar region paragangliomas is well-documented. To elucidate, in this area the nature of these unusual tumors is relatively difficult. Clinical history, physical(More)
A 36-year-old woman presented with severe frontal headache, fever, left palpebral swelling, and proptosis. Radiographic studies showed a giant frontoethmoidal osteoma, that extended intracranially into the frontal lobe and was associated with two abscesses, one within the lesion and the other in the right frontal lobe. The tumour was excised and the(More)
Intraventricular cavernoma (IVC) is a rare intracranial vascular malformation and only 100 cases of IVC have been described in the literature. Although IVCs share some common characteristics with intraparenchymal cavernomas, they also have some distinct features involving structure, clinical symptoms, radiologic appearance, and onset of symptoms. This(More)
BACKGROUND Osteoblastomas are rare benign bone tumors that are mostly found in the posterior spinal elements; about 20% are located in the cervical spine. OBJECTIVE The case of a destructive cervical osteoblastoma at C5 is reported in a 19-year-old man who initially presented with spastic quadriparesis. CASE REPORT A 19-year-old man was self-referred,(More)