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At least 541 records · Page 30Linked to original sources
PubMed2006

Unusual magnetic resonance characteristics of a cerebellopontine angle epidermoid cyst with upper cervical spinal canal extension.

We present a 27-year-old woman with an epidermoid cyst at the cerebellopontine (CP) angle with caudal extension into the upper cervical spinal canal. The lesion showed unusual hyperintensity on T1-weighted images, and hypointensity on T2-weighted images. We used microneurosurgical techniques for tumour dissection and excision. To our knowledge, this is the fifth example in Index Medicus/MEDLINE of histopathologically proven CP angle epidermoid with cervical spine extension.

Adult↗
PubMed2006

Subdural spinal haematoma after epidural anaesthesia in a patient with spinal canal stenosis.

A 60-year-old male with a past history of T12 fracture had epidural analgesia for a radical prostatectomy. It was unknown prior to epidural insertion that the patient had a canal stenosis at T12 from the previous injury. The patient developed severe bilateral buttock pain after epidural catheter removal. Magnetic resonance imaging demonstrated a spinal subdural haematoma from T10 to L2 with mild cord compression. The patient made a successful recovery with conservative management. Neuraxial blockade should be approached with caution in patients with previous back injury, and only after a thorough assessment has been obtained to exclude spinal canal stenosis.

Anesthesia, Epidural↗
PubMed2005

Artificial pedicle screw reconstruction of the cervical spine after lateral paramedian transpedicular approach for lesions of the ventral cervical spinal canal.

OBJECTIVE: We describe in detail the anatomic and surgical principles of a lateral cervical paramedian transpedicular approach, a novel technique that provides access to the ventral cervical spinal canal. We also describe single-stage posterior column reconstruction of the cervical spine in which traditional cervical lateral mass screws are used simultaneously to reconstruct the cervical pedicle and to allow for three-column stabilization in a continuous posterior screw-rod construct after this approach. METHODS: This technique is a modification of traditional thoracic posterolateral extracavitary approaches and has been used by our group for the resection of intradural and extradural spinal lesions, as we illustrate. RESULTS: This approach is particularly useful in cases where significant pathological characteristics of the trachea or esophagus preclude an anterior approach to the cervical spine and in cases in which multiple levels are involved. CONCLUSION: Cervical spinal stability is enhanced, because all cervical levels are incorporated into the final screw-rod construct.

Adult↗
PubMed1986

[Meningiomas of the spinal canal. Clinical aspects and long-term results].

Within a period of 27 years a total of 102 patients (93 women, 9 men) were operated on because of a spinal meningioma. With a mean duration of the disease of 25 months, about two thirds of the meningioma carriers were operated on in an advanced stage of the disease. In the period of follow-up examinations of at least three years an improvement occurred in 68.8 per cent of the patients. Of these 53.9 per cent were able to walk by themselves and 14.7 per cent needed help, 18.6 per cent became fit for work in their professions or trades. Fourteen patients (13.7%) were in a condition requiring special care. The total mortality rate related to three years post operationem was 17.6 per cent. The prognosis for the benign meningiomas in the spinal canal is clearly diminished by a retarded recognition.

Adult↗
PubMed1995

Haemodynamic changes in lumbar nerve root entrapment due to stenosis and/or herniated disc of the lumbar spinal canal--a magnetic resonance imaging study.

A prospective MRI study was carried out to assess the secondary changes in patients with stenosis and/or herniated disc of the lumbar spinal canal. The study covered 100 patients who had low back and leg pain due to such processes. Of these, 60 patients (group A) had a monoradicular pain pattern, average duration 2 months, due to a herniated lumbar disc. The remaining 40 patients (group B) had acute exacerbation of their chronic low back and leg pain, due to stenosis and herniated disc. As a control group, 5 asymptomatic volunteers with neither stenosis nor herniated disc on MRI were examined. All the patients and volunteers were examined by MRI with several sequences: partial saturation recovery with phase contrast PS (500/10), spin echo SE (500/20), short TI inversion recovery STIR (1900/135/30) and, for the dynamic study, field-gradient echo sequences FAST (50/15): 10 frames in 200 s. In all participants, Gd-DTPA was administered intravenously. In 8 of the patients of group B capillarisation in the protruded nucleus tissue was demonstrated on the PS sequence after Gd-DTPA administration. This tissue also showed decreased signal intensity on the STIR sequence. The capillarisation extended into the centre of the disc. Venous stasis could be verified in all of the 100 patients. An oedema could be verified in all patients of group A; in 20%, its size exceeded that of the herniated disc. In group B, an oedema was seen in only 12 patients. In the control group, no haemodynamic changes were seen. Using MRI, it is possible to define the border between herniated disc tissue and perifocal oedema.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗
PubMed1990

Adrenal cortical adenoma in the spinal canal of an 8-year-old girl.

An ectopic adrenal cortical adenoma containing high levels of androstenedione but without clinically detectable virilizing effects was found in the spinal intradural space of an 8-year-old girl. The tumor, which was located at the L2 level, manifested itself clinically by a short history of bilateral leg pain. It was well encapsulated; therefore, total surgical removal was accomplished. The light microscopic appearance of the tumor was typical of adenomatous adrenal cortical tissue. Ultrastructurally, it also showed characteristic features of steroid-producing tumors, including very abundant smooth endoplasmic reticulum and giant mitochondria with tubulovesicular and circular cristae. Frozen tissue analyzed by radioimmunoassay was found to contain almost 20 times the normal tissue level of androstenedione. There was no elevation of cortisol or aldosterone levels in the tumor. Postoperative magnetic resonance imaging (MRI) scan of the retroperitoneum showed no abnormalities in the patient's adrenal glands. Serum androstenedione levels were normal. We postulate that the adenoma developed from congenital ectopic rests of intraspinal adrenal tissue. Although ectopic occurrence of adrenal cortical tissue has been recorded in other areas, neither such rests nor tumors developing from them have been previously reported within the spinal canal.

Adenoma↗