Filter by keywords:



Filtering documents. Please wait...

1/102. Lobular capillary hemangioma of the cauda equina. Case report.

    This 56-year-old woman presented with a 1-year history of low-back pain, sciatica, and paresthesias in the right S-1 dermatome. On examination the patient was shown to have a right-sided Lasegue's sign, normal strength, hypalgesia in the right S-1 dermatome, and a slight diminution of the right achilles tendon reflex. magnetic resonance imaging revealed a 2-cm intradural enhancing lesion at the level of the L-4 vertebra. laminectomy of L3-L5 vertebrae was performed, and intradural exploration disclosed a blueberry-appearing tumor that was surrounded by an intense arachnoiditis and attached to the right S-1 nerve root. A cystic collection of cerebrospinal fluid was seen caudal to the tumor. Complete removal required transection of the adherent nerve root fascicles. Histological analyses indicate that the lesion was a lobular capillary hemangioma, which, to the authors' knowledge, appears to be one of the first recorded examples of such a case.
- - - - - - - - - -
ranking = 1
keywords = back pain, back
(Clic here for more details about this article)

2/102. Plexiform neurofibroma of the cauda equina. Case report.

    Plexiform neurofibroma of the cauda equina has been reported only twice previously. The authors report the first pediatric patient in whom such a tumor has been found. A 4-year-old boy presented with low-back pain that radiated bilaterally into the L-4 and L-5 dermatomes. A dermal sinus noted at the midthoracic level was surrounded by a hemangiomatous lesion. magnetic resonance imaging confirmed the presence of the dermal sinus and revealed a well-defined lumbosacral mass that showed heterogeneous intensity with irregular enhancement. Intraoperatively, a solid mass, which engulfed the entire cauda equina, could not be dissected from the roots. The dermal sinus tract, however, was excised from the thoracic spine. The patient underwent radiotherapy to control the tumor and relieve his pain. Plexiform neurofibromas of the cauda equina are characterized by an insidious and progressive clinical course. The tumor mass may engulf all the roots of the cauda equina. No plexiform neurofibroma of the cauda equina has been reported to be associated with neurofibromatosis Type 1. The authors assume that the thoracic-level dermal sinus observed in this child was an incidental finding.
- - - - - - - - - -
ranking = 1
keywords = back pain, back
(Clic here for more details about this article)

3/102. Intraneural synovial sarcoma of the median nerve.

    Intraneural synovial sarcomas are extremely rare in the main nerve trunks of the upper limb. We report on a 16-year-old youth who presented with a painless mass on the flexor aspect of the wrist with the clinical appearance of a ganglion. At operation there was a tumour of the median nerve that was shown on histology to be an intraneural synovial sarcoma.
- - - - - - - - - -
ranking = 0.021422868652935
keywords = upper
(Clic here for more details about this article)

4/102. Pulmonary thromboembolism after spinal instrumentation surgery.

    A 57-year-old woman was hospitalized because of gait disturbance and dysuria. Close examination revealed a cauda equina tumor at the level of L2 and L3. Tumor resection was performed, with posterolateral fusion and spinal instrumentation. On the eleventh day after the surgery, she experienced dyspnea and chest pain during standing and walking exercise. Pulmonary thromboembolism was diagnosed, based on: (1) blood gas analysis findings of hypoxemia and (2) defective images in both of the upper lobes on urgent pulmonary blood flow scintigram. Her clinical status improved with urgent thrombolytic therapy (with tisokinase and urokinase) and anticoagulation therapy (with heparin and warfarin), and her life was saved. When pulmonary thromboembolism occurs, early diagnosis by pulmonary blood flow scintigram and early thrombolytic and anticoagulative therapies are necessary. Special attention should be paid to symptoms of pulmonary thromboembolism in patients after spinal surgery.
- - - - - - - - - -
ranking = 0.035735519374807
keywords = upper, chest
(Clic here for more details about this article)

5/102. MR appearance of paraganglioma of the cauda equina. case reports.

    PURPOSE: To investigate the value of MR imaging for preoperative diagnosis of paraganglioma of the cauda equina. MATERIAL AND methods: A retrospective review of 2 cases of paraganglioma of the cauda equina examined with MR imaging was undertaken. Features assessed included the homogeneity of the lesions, presence or absence of serpiginous flow void and thin hypointense margins. RESULTS: In case 1, the tumor was hyperintense on the postcontrast examination and serpiginous flow void suggested vessels in the upper pole of the tumor. In case 2, the tumor was encapsulated by a thin hypointense margin on both T1- and T2-weighted images, which suggested hemosiderin. CONCLUSION: The MR appearance may be of great value in the preoperative diagnosis of paraganglioma of the cauda equina.
- - - - - - - - - -
ranking = 0.021422868652935
keywords = upper
(Clic here for more details about this article)

6/102. Giant cauda equina schwannoma. A case report.

    STUDY DESIGN: Case report. OBJECTIVES: To present a rare case of a giant schwannoma of the cauda equina. SUMMARY OF BACKGROUND DATA: Giant spinal schwannoma of the cauda equina, which involves many nerve roots, is rare and there is usually no ossification in the schwannoma. It is unknown whether or not complete excision is preferable if the tumor is located in the lumbar lesion. methods: A 57-year-old woman had a 10-year history of low back pain. Scalloping of the posterior surface of the vertebral bodies from L3 to the sacrum was found. magnetic resonance imaging disclosed a giant cauda equina tumor with multiple cysts. Central ossification revealed by computed tomography and an unusual myelogram made the preoperative diagnosis difficult. RESULTS: The patient underwent incomplete removal of the tumor, decompression of cysts, and spinal reconstruction. The tumor was proved to be a schwannoma. The postoperative course was uneventful and she has been almost free from low back pain for 3 years and 4 months. CONCLUSIONS: Giant schwannoma in the lumbar spine region is usually excised incompletely, because complete removal had the risk of sacrificing many nerve roots. In spite of the incomplete removal of the tumor, the risk of recurrence is low.
- - - - - - - - - -
ranking = 2
keywords = back pain, back
(Clic here for more details about this article)

7/102. Intraneural perineurioma involving the median nerve.

    Intraneural perineurioma is a rare clinical entity, which tends to affect major nerve trunks in the upper extremities. On light microscopy, numerous pseudo-onion-bulb structures having a central clear area are surrounded by concentric layers of eosinophilic elongate cells having spindled nuclei. immunohistochemistry of concentric cells stains positive for epithelial membrane antigen but negative for S100 protein. Because of the small number of cases, no consensus has been made on proper treatment of this entity. Although none of the patients who have had excision of tumor with nerve grafting have had sensory nerve recovery, we believe each patient should be individualized until more data are available regarding this tumor.
- - - - - - - - - -
ranking = 0.021422868652935
keywords = upper
(Clic here for more details about this article)

8/102. ganglioneuroblastoma of the cauda equina.

    A 39-year-old lady presented with low back pain and neurogenic claudication. Magnetic resonance imagining revealed an intradural neoplasm in the cauda equina region. The patient underwent lumbar laminectomy and total excision of the neoplasm. biopsy showed it to be a ganglioneuroblastoma, which is rare in the spinal canal and so far does not appear to have been reported in the region of the cauda equina. Its management is discussed.
- - - - - - - - - -
ranking = 1
keywords = back pain, back
(Clic here for more details about this article)

9/102. A rapidly growing benign intrathoracic neurofibroma after lung lobectomy.

    A 67-year-old male underwent a right upper lung lobectomy for lung cancer in January 1993. Follow-up chest x-rays revealed a progressive and rapidly growing intrathoracic mass in the right thorax. The mass, however, did not resemble a tumor recurrence, and the patient complained only of shortness of breath. Computerized tomography and magnetic resonance imaging confirmed the presence of the intrathoracic mass and its associated compression of the residual lung. A right thoracotomy was performed in January 1998, and a mass found arising from the sympathetic nerve trunk was resected. Microscopic examination revealed stellate or spindle-shaped cells in myxoid stroma with sparsely distributed collagen fibers. Immunohistochemically, the cells were positive for neuron-specific enolase, and the tumor was identified as neurofibroma. The patient did not suffer from von Recklinghausen's disease, and there was no family history of the disease. After resection of the neurofibroma, the compressed lung was able to re-expand, and the patient's shortness of breath disappeared. At one year postoperative, the patient remains well, and there is no evidence of recurrence.
- - - - - - - - - -
ranking = 0.035735519374807
keywords = upper, chest
(Clic here for more details about this article)

10/102. Lipofibromatous hamartoma and related peripheral nerve lesions.

    Three unusual cases of a rare, tumor-like condition, lipofibromatous hamartoma, are reported. This lesion is composed of fibrous and fatty tissue that infiltrates peripheral nerves, typically on the volar aspect of the upper extremities of children and young adults. All three patients had a painless soft tissue mass of the wrist and/or hand, which followed nerve distribution, and only one patient had neurologic symptoms due to compression. Diagnosis was made by open biopsy and histologic examination.
- - - - - - - - - -
ranking = 0.021422868652935
keywords = upper
(Clic here for more details about this article)
| Next ->


Leave a message about 'Peripheral Nervous System Neoplasms'


We do not evaluate or guarantee the accuracy of any content in this site. Click here for the full disclaimer.