1/120. Numerous transorbital wooden foreign bodies in the sphenoid sinus.A very rare case of numerous transorbital wooden foreign bodies penetrating into the sphenoid sinus in a 47-year-old male is reported. His right eye was nonreactive to light, and the oculomotor, trochlear and abducens nerves were completely disturbed. Although a minor injury was observed on the inner side of the right eyebrow, the wound was not serious or infectious. Computed tomographic scanning of the orbit and parasinus revealed an isodense linear shadow to muscle and an irregular shadow of the lamina papyracea. However, the findings were difficult to discriminate from an optic canal fracture preoperatively. We detected foreign bodies penetrating the optic nerve rise, which were successfully removed in combination with an endoscopic transethmoidal and transorbital approach. Various and careful imaging examinations are recommended to diagnose and manage paraorbital trauma, when a penetrating wound of the face is observed.- - - - - - - - - - ranking = 1keywords = fracture (Clic here for more details about this article) |
2/120. blindness from bad bones.Progressive visual loss is the most common neurologic finding in osteopetrosis. Several mechanisms may explain this phenomenon, including compression of the optic nerves caused by bony overgrowth of the optic canals and retinal degeneration. We report a child with osteopetrosis and progressive visual loss, even though patent optic canals were demonstrated by computed tomography and digital holography. This patient's visual loss was caused by increased intracranial pressure secondary, to obstruction of cerebral venous outflow at the jugular foramen. This case points to the importance of a full evaluation of the skull base foramina in the diagnostic workup of visual loss in patients with osteopetrosis.- - - - - - - - - - ranking = 0.50686998417219keywords = compression (Clic here for more details about this article) |
3/120. immobilization hypercalcemia crisis.Profound hypercalcemia associated with immobilization is rare. Hypercalcemic crisis occurring as a result of immobilization in which there was not a coexisting, contributing medical condition has not, to our knowledge, been reported previously. Failure to consider hypercalcemia as the source of progressive anorexia, nausea, vomiting, and irritability resulted in a respiratory arrest and nearly fatal outcome in the case of a 13-year-old boy one month after a simple femoral fracture. Therapy consisting of the intravenous administration of fluids and corticosteroids was successful in lowering the serum calcium level until mobilization could be accomplished. review of previously reported cases emphasizes the difficulty in recognition and diagnosis of this unusual condition. Surgeons treating patients with fractures should be aware of this complication and familiar with its appropriate therapy.- - - - - - - - - - ranking = 2keywords = fracture (Clic here for more details about this article) |
4/120. Visual recovery after a year of craniopharyngioma-related amaurosis: report of a nine-year-old child and a review of pathophysiologic mechanisms.BACKGROUND: The probability of visual recovery in tumor-related optic neuropathy usually correlates with the severity and duration of optic pathway compromise. Recovery of visual acuity to normal levels is unexpected after profound loss of vision extending for a period of weeks and months. methods: A 9-year-old girl who had neurosurgical resection of a craniopharyngioma compressing the optic chiasm and optic tract was followed up serially with neuroimaging and clinical examinations over a 6-year period. RESULTS: Within 3 months of the diagnosis of craniopharyngioma, the girl's vision was reduced to no-light-perception blindness when she viewed with the more involved eye. The blindness correlated with an amaurotic (i.e., >3.6 log unit) relative afferent pupillary defect and an absence of any response when tested with visual field perimetry. After more than a year of total blindness and cessation of all neurosurgical and radiation therapy, visual acuity recovered to a normal level (20/25), the afferent pupillary defect improved, and sensitivity in a portion of the temporal hemivisual field was restored. In the follow-up that has extended for 5 years from the time of recovery, stability of the restored vision has been documented. CONCLUSION: Children who have tumor-related loss of vision due to damage to the anterior visual pathways may be capable of recovery after intervals of blindness that would be considered irreversible in adults. The mechanism of the recovery in our patient may have been decompression-related restoration of axoplasmic flow, followed by gradual remyelination of visual fibers, which allowed reorganization of connections to the lateral geniculate nucleus to optimize synaptic transmission.- - - - - - - - - - ranking = 0.50686998417219keywords = compression (Clic here for more details about this article) |
5/120. Visual loss associated with fibrous dysplasia of the anterior skull base. Case report and review of the literature.The authors present a case of visual loss associated with fibrous dysplasia of the anterior skull base and the surgical management of this case. Preoperative computerized tomography scanning in this patient demonstrated a patent optic foramen and a rapidly growing cystic mass within the orbit, which was responsible for the patient's visual loss. A literature review revealed that this case is typical, in that cystic mass lesions of various types are frequently responsible for visual loss associated with fibrous dysplasia. The authors did not find significant evidence in the literature to support the notion that visual loss associated with fibrous dysplasia is the result of progressive optic canal stenosis, thus raising questions about the value of prophylactic optic canal decompression. Instead, as demonstrated by this case and those uncovered in the literature review, most instances of visual loss result from the rapid growth of mass lesions of cystic fibrous dysplasia, mucoceles, or hemorrhage. Findings of the literature review and the present case of fibrous dysplasia of the anterior skull base support a role for extensive surgical resection in these cases and indicate a need for additional prospective analysis of a larger number of patients with this disease.- - - - - - - - - - ranking = 0.50686998417219keywords = compression (Clic here for more details about this article) |
6/120. Traumatic optic neuropathy. A case report.A case of visual loss following cranio-maxillofacial trauma is reported. The patient had a sudden partial blindness associated with a fracture of the roof, medial and lateral orbital walls. Access to the orbit was achieved through a transethmoidal approach using the Howarth-Lynch medial incision and resecting the bone fragments which impinged on the optic nerve. The patient had total return of visual acuity, without surgical complications. The role of orbital and optic decompression in the management of patients with traumatic optic neuropathy is discussed. Its indications are controversial and the procedure should be considered only within the context of the specific needs of the individual patient.- - - - - - - - - - ranking = 1.5068699841722keywords = fracture, compression (Clic here for more details about this article) |
7/120. Progressive visual loss and ophthalmoplegia.A 51-year-old woman with hyperthyroidism presented with a 4-week history of bilateral progressive visual loss despite treatment with oral prednisone. Her visual function improved after bilateral orbital decompression. The indications for and advantages and disadvantages of radiation therapy and orbital decompression in TAO are discussed. The management of intraocular pressure, strabismus, and lid abnormalities in TAO is also addressed.- - - - - - - - - - ranking = 1.0137399683444keywords = compression (Clic here for more details about this article) |
8/120. Unilateral blindness as a complication of intraoperative positioning for cervical spinal surgery.The authors report a case of unilateral blindness after surgical vertebral stabilization for C5-C6 subluxation. The blindness resulted from ischemia of the retina caused by prolonged compression of the eyeball on the surgical bed. This injury can be serious and irreversible, so it must be prevented by placing the patient in the proper position. The anesthetist must pay particular attention to avoid the consequences of possible intraoperative movement.- - - - - - - - - - ranking = 0.50686998417219keywords = compression (Clic here for more details about this article) |
9/120. Craniofacial fibrous dysplasia complicated by acute, reversible visual loss: report of two cases.We report two cases of craniofacial fibrous dysplasia which presented with acute visual loss. The first patient had a sphenoid sinus mucocele compressing the optic chiasm. In the second patient the optic canal was narrowed by dysplastic bone. In both cases optic nerve decompression restored vision to normal.- - - - - - - - - - ranking = 0.50686998417219keywords = compression (Clic here for more details about this article) |
10/120. Upside-down orbitopathy: unilateral orbital dependent-tissue oedema causing total visual loss.The case is reported of a 24-year-old man who was involved in a road traffic accident and became trapped upside down with the right side of his face being the most dependent part of his body. Marked hemifacial tissue oedema was associated with right acute compressive orbitopathy and vascular compromise. Acute dysfunction of al orbital nerves was found on examination. Such neuropathy is usually related to the consequences of direct trauma, fractures or haemorrhage; however, computed tomography scanning demonstrated no evidence of orbital fracture or haemorrhage. Immediate anterior surgical orbital decompression was performed in the emergency room in addition to high dose intravenous steroids. Dependent orbtal tissue oedema is proposed as a mechanism of compressive orbitopathy with consequent ischaemic damage to all orbital nerves, total visual loss and complete ophthalmoparesis. Good recovery of other orbital nerves has occurred and the globe has reperfused. Despite intervention, no visual function has returned.- - - - - - - - - - ranking = 2.5068699841722keywords = fracture, compression (Clic here for more details about this article) |
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