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Query: UMLS:C0027651 (tumor)
 685,946 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Preoperative vertebral angiography is advised when the vertebral artery may be compromised by a large cervical neurinoma. The surgical removal of this type of tumor, particularly when its foraminal extension involves the vertebral artery, is facilitated by the use of the operating microscope.
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PMID:Vertebral arteriography and microsurgery in the management of dumbbell cervical neurinomas. 117 49

A malignant Schwannoma of the cauda equina has been studied in long-term organotypic culture. Electron-microscopic observation demonstrates that, along with tissue organization, characteristic cell differentiation was retained in this type of culture, but with some morphological changes. As in the biopsy, the tumor cells were elongated and had abundant cell processes in vitro. An increase in the quantity of cytoplasmic filaments and changes in the form of cell processes were observed. Thus organotypic culture of human Schwann cell tumors provides a method of investigating factors which affect their development and differentiation.
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PMID:Electron-microscopie observations of a human schwannoma in organotypic culture. 119 83

Two cases of a large schwannoma of the lesser omental sac are described. One arose from the lesser omentum itself. This schwannoma also had roentgenographically visible calcifications, a finding never before reported to have been seen in the abdomen. Emphasis is upon the uniqueness of the site of the tumor.
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PMID:Benign, solitary schwannomas of the lesser peritoneal sac. 120 Feb 38

In cases of a pre-operatively diagnosed mediastinal tumour, but with no symptoms of its penetrating the vertebral canal via the intervertebral foramen, and with the surgeon suddenly discovering during anterio-lateral or lateral transpleural thoracotomy the tumor's spur going deep into the intervertebral foramen then it is a modification of the operation involving an effective removal of the mediastinal-intravertebral newgrowth, as described in this report, is most appropriate. This operation is performed in a single-stage fashion both on the level of the thoracic cavity and on that of the vertebral canal by undertaking a through examination of the intervertebral foramen from both sides. The authors believe this modification of the operative intervention to present advantages over the classical Guleke procedure, even in cases with an exactly established diagnosis of neurinoma, when one of its major node lies in the posterior mediastinum and the second--in the vertebral canal. Three cases in which this modification of the operation was applied with success are reported.
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PMID:[A combined method of removing hourglass shaped neurogenic mediastinal-intravertebral tumors]. 121 Jan 68

The author examined 506 operated upon patients for unilateral neurinoma of the acustical nerve of a different size. The content of the protein in the CSF was in a direct correlation with the size of the tumor and degree of involvement into the pathological process of the vessels in the brain structures, adjacent to the tumor. A disturbance in the permeability of the CSF spaces was determined by the size of the tumor node.
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PMID:[Cerebrospinal fluid studies in acoustic neurinoma]. 121 Sep 59

Spinal cord tumor of children is a rare occurrence and infancy it is extremely rare. Experience with a 3-month-old female case of intraspinal extradural neurinoma was reported. This is the youngest reported case in the domestic literature. The tumor, which was solid and extended from the level of 11th thoracic vertebra to the /th lumbar vertebra, was successfully removed. Preoperative symptoms, such as sensory and motor disturbances of bilateral lower extremities and urinary and fecal incontinences, disappeared postoperatively. The patient is quite healthy 7 years after the operation. The domestic literature consisting of 73 cases of spinal cord tumor of children was reviewed and statistically observed. Histopathologically, teratoma and teratoid tumors were the major constituents. Neurinoma, which is a major entity in adult cases was observed only in 12 cases (16.4%). In infancy early diagnosis is often difficult due to absence of subjective complaints and, in about half of the reported cases, motor disturbance was the first noticed clinical sign. In the present case, the parents noticed crying of the baby on lifting up the limbs to change diaper and the presence of some sort of sensory disturbance was suggested. Thus in suspicious cases, diagnostic procedures such as myelography should be done in early stage and early operation should be undertaken.
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PMID:[Spinal cord tumor of children--a cured case of infantile spinal cord tumor and review of domestic literature (author's transl)]. 123 39

Three cases of trigeminal neurinoma originating from the Gasserian ganglion were reported. The findings observed on plain roentgenograms, cerebral angiograms and pneumoencephalograms were described in detail. Neuroradiologic examinations used routinely our department for the diagnosis of the skull base tumors were as follows; (1) plain skull examinations, including lateral, straight posterior-anterior, anterior-posterior half axial (Towne), axial, Stenvers, optic canal as well as tomograms in frontal, sagittal and axial projections; (2) angiographies by transfemoral catheter technique including selective internal carotid, external carotid and vertebral angiograms, and orbital-cavernous sinus venography via frontal and femoral veins; (3) pneumoencephalography with tomography. Bone destruction of the middle fossa including foramen ovale, foraman spinosum and lateral aspect of the sella was seen in all cases. Superior orbital fissure, optic canal and anterior surface of the petrous bone were also eroded depending upon the extent of tumors. Sharply circumscribed erosion of the petrous apex was seen in one of 3 cases, indicating the tumor extention into the posterior fossa. A soft tissue mass in the sphenoid sinus and ethmoidal air cells was recognized in all cases. Selective internal and external carotid angiograms demonstrated tumor vessels in 2 of 3 cases. Orbital-cavernous sinus venography was helpful for the interpretation of the lesion extending to the cavernous sinus and its neighboring structures. Conventional gas encephalography showed elevation of the temporal horn, and the concave arch formed by the supracornual cleft and lateral cleft was directed basally and medially in all of the cases. Tomography was also useful in the more detailed analysis of temporal horn. It should be stressed that the plain skull features are most important for deciding which contrast examination should be performed further.
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PMID:[Neuroradiologic diagnosis of trigeminal neurinoma originating from the gasserian ganglion (author's transl)]. 124 Jun 7

This report is a case of intracranial neurinoma of the jugular foramen. A 21-year-old woman was admitted to our hospital with complaints of headache, nausea, tinnitus on the left and deafness on the left. The neurological examination revelaed bilateral choked disc, Bruns Cushing nystagmus, hearing disturbance on the left, slight disturbance of vestibular function on the left, diminished gag reflex on the left, curtain sign on the left, loss of taste on the posterior third of the left side of the tongue, and deviation of the tongue to the left on protrusion, accompanied with atrophy and fasciculation on the left. Skull-XP showed the enlargement of the jugular foramen. Pneumoencephalogram showed the enlargement of the fourth ventricle combined with the superior, posterior displacement of it's floor. We confirmed the diagnosis of the jugular foramen neurinoma on the left. By suboccipital craniectomy a walnutsized tumor was disclosed at the jugular foramen. The tumor was encapsuled with smooth, thick capsule and was colored in dark rouge. This tumor was removed totally and the postoperative course was uneventful. The pathological diagnosis was neurinoma. We consider that this tumor originated in the ninth or tenth cranial nerve.
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PMID:[Intracranial neurinoma of the jugular foramen-a case report (author's transl)]. 124 Nov 11

Neurilemmoma is the most common tumor arising from peripheral nerves. Although infrequently encountered, it must be included in the differential diagnosis of soft tissue tumors. Because of its cystic consistency, a neurilemmoma in the hand or wrist may be mistaken for a ganglion. In this series of 17 neurilemmomas, 6 were present in the forearm, and 11 were in the hand and wrist. There were 5 tumors in fingers, 1 in the thumb, 3 in the palm, and 2 in the wrist. In the forearm, 3 tumors involved the median nerve, 2 involved the ulnar nerve, and 1 arose from a small sensory branch of the radial nerve. Neurilemmomas arise from a benign proliferation of the Schwann cells and rarely disturb the function of the involved nerve. The tumors are well encapsulated and may be easily enucleated from the parent nerve. Resection of the involved nerve is seldom necessary except when small nerves are extensively involved.
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PMID:Neurilemmomas of the forearm and hand. 126 Nov 14

Two cases of schwannoma limited to the jugular foramen are described. This entity may clinically and radiologically resemble glomus jugulare tumors so closely, that only careful histological examination of an adequate surgical tumor specimen can provide a definitive diagnosis. Since documentation of this form of neurogenic tumor is lacking in the literature, it suggests that the entity is very rare or that such tumors may be erroneously classified as glomus jugulare tumors. The two cases in this study were managed surgically by subtotal removal via a wide transmastoid approach.
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PMID:Schwannoma of the jugular foramen. 126 26


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