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

Epithelial cysts in the posterior fossa are very rare, and only 22 cases have been reported in literatures. We report a case of epithelial cyst occurring on the anterior surface of the brain stem. A 31-year-old man was admitted to our hospital complaining of right hemiparesis and dysarthria. Plain CT showed a heterogeneous (isodense-hyperdense) mass in front of the pons, and was not enhanced after injection of contrast medium. As for findings of MRI, the tumor revealed as heterogeneous (isointense-hyperintense) mass on T1-weighted image and also heterogeneous (hypointense-hyperintense) mass on T2-weighted image. We removed partially the tumor which content was like yogurt. The histological findings of the cyst wall revealed a pseudostratified columnar ciliated epithelium.
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PMID:[Epithelial cyst occurring on the anterior surface of the brain stem--case report and review of the literatures]. 129 17

We report a case of AFP producing gastric cancer manifested by metastasis to the tentorium cerebelli. A 66-year-old male patient was admitted with dysarthria, occipital headache and nausea on May 1, 1990. Neurological examination revealed signs of increased intracranial pressure and the right-sided cerebellar hemispheric signs. CT and MRI showed a round tumor shadow 3cm in diameter, which originated in the right-side tentorium cerebelli and grew in the posterior fossa. Tumor stains fed by the right tentorial artery were recognized by angiography. Serum AFP level was 503.5ng/ml. The patient underwent an operation under general anesthesia in the prone position. The tumor was totally removed via the suboccipital transtentorial approach. Histological examination revealed AFP producing adenocarcinoma. The patient was found to have a gastric cancer after neurosurgical operation, and underwent subtotal gastrectomy by surgeons. Serum AFP level was 254.5ng/ml after removal of metastatic brain tumor, and 5.0ng/ml after subtotal gastrectomy.
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PMID:[AFP producing gastric cancer manifested by metastasis to the tentorium cerebelli; case report and review of the literature]. 137 52

A case of cystic optic glioma involving chiasma and bilateral posterior optic pathway was reported. A 26-year-old male was admitted to our hospital complaining of dysarthria and left hemiparesis. CT, MRI revealed a cystic tumor at the right basal ganglia to midbrain, a calcified one at the bilateral optic tract and left temporal to thalamic region, and a small one at the chiasma. Radiotherapy and chemotherapy were performed because anaplastic astrocytoma was suspected after stereotactic biopsy of the tumor at the right basal ganglia. The subsequent MRI showed continuity among the above three lesions to be well defined. About 2 years later, however, enlargement of the cyst, tumor invasion beyond the optic pathway and growth of the chiasmal lesion were noted, and direct surgery to the chiasmal lesion was performed. The chiasma was swollen and grayish soft tumor tissue was partly resected after aspiration of the intrachiasmal cyst. The definitive pathological diagnosis was pilocytic astrocytoma. This case was designated as a peculiar optic glioma in the following respects; the patient was an adult man suffering from dysarthria and left hemiparesis, the tumor involved not only the chiasma and the bilateral optic tract, but also the outside optic pathway and was accompanied by a large cyst.
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PMID:[A case of cystic optic glioma involving chiasma and bilateral posterior optic pathway]. 144 96

A rare case of cavernous angioma located in the fourth ventricular floor occurred in a 44-year-old female complaining of occipital headache, vomiting, diplopia, and dysarthria. Computed tomographic scans demonstrated a high-density area in the fourth ventricle and slight hydrocephalus. Magnetic resonance (MR) imaging showed a mixed intensity mass on T2-weighted images and high- or isointensity regions on T1-weighted images. The tumor was totally removed and histologically diagnosed as cavernous angioma. Postoperatively, ataxic gait, nausea, and vomiting disappeared gradually. MR imaging was useful to accurately evaluate the anatomic relationship between the lesion and the brainstem.
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PMID:Cavernous angioma in the fourth ventricular floor--case report. 171 36

The authors report a case of glioblastoma in which MR images with Gd-DTPA enhancement changed rapidly during the early stage. A 61 year-old male presented with sudden right facial spasm and dysarthria. However, both a plain and an enhanced CT failed to demonstrate any abnormal lesions. On the other hand, T2 weighted MR image revealed a well circumscribed high intensity lesion in the left frontal lobe without mass effect. This lesion could not be differentiated from cerebral infarction, since no contrast enhanced lesion was able to be observed in T1 weighted MR image with Gd-DTPA. His symptoms gradually became aggravated and at 3 months from the onset, MR image with Gd-DTPA disclosed a small enhanced lesion in the left frontal lobe near the cortical surface. After 6 months from the onset, he suffered from right hemiparesis and motor aphasia. The MR image with Gd-DTPA at this time showed a large enhanced lesion in the left frontal lobe with mass effect. He was admitted to our hospital, and subtotal removal of the tumor and intraoperative radiation was carried out. The patient did well postoperatively without additional neurological deficit, and then he received additional radiation therapy. It should be noted that Gd-DTPA enhanced MR image might fail to reveal the lesion of glioblastoma in its early stage, while T1 weighted image discloses only the gyral swelling.
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PMID:[A case of glioblastoma in which early diagnosis was difficult by MRI]. 194 85

This report describes a rare complication after the resection of a tumor of the posterior fossa, the "one-and-a-half" syndrome. The one-and-a-half syndrome is a disturbance of horizontal eye movements in which patients have lateral gaze palsy in one direction and internuclear ophthalmoplegia in the other direction. The patient was a 54-year-old woman who developed headaches, diplopia, and blurred vision over 6 months. Computed tomographic scans and magnetic resonance imaging demonstrated an enhancing, mixed density, midline mass of the cerebellum. After a resection of the mass, an anaplastic astrocytoma, the patient complained of more severe diplopia and facial weakness. An examination disclosed a left one-and-a-half syndrome, left peripheral facial paralysis, dysarthria, dysphagia, mild left hemiparesis, dysmetria of the left upper limb, and truncal ataxia. The brain stem showed no abnormalities on postoperative computed tomographic scans. After 4 months of follow-up, the one-and-a-half syndrome had not improved, even though other signs had improved or resolved. This syndrome is caused by damage to structures within the pontine tegmentum: the medial longitudinal fasciculus, the ipsilateral paramedian pontine reticular formation, or the ipsilateral abducens nucleus. Multiple sclerosis and brain stem infarction are the most common causes of the one-and-a-half syndrome. Less frequently, it is caused by primary and metastatic tumors of the brain stem and cerebellum. Rarely, the one-and-a-half syndrome can develop postoperatively after the removal of tumors of the posterior fossa. The mechanism of pontine tegmental injury remains unknown.
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PMID:"One-and-a-half" syndrome after a resection of a midline cerebellar astrocytoma: case report and discussion of the literature. 196 11

Three patients aged 5 1/2 to 9 years old with mutism after posterior fossa surgery are presented. The entity is discussed with a review of 15 additional previously reported cases in children aged 2 to 11 years. In all 18 patients, a large midline tumor of the posterior fossa (medulloblastoma in nine cases, astrocytoma in five, and ependymoma in four), often attached to one or both lateral recesses of the fourth ventricle, was removed. Mutism developed 18 to 72 hours after the operation (mean 41.5 hours) in patients with no disturbance of consciousness and no deficits of the lower cranial nerves or of the organs of phonation. All of these children had spoken in the first hours after surgery. The disorder lasted from 3 to 16 weeks (mean 7.9 weeks). Speech was regained after a period of dysarthria in six of the 10 cases for whom this information was available. The various hypotheses advanced to explain the pathogenesis of this speech disorder are analyzed.
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PMID:Mutism after posterior fossa surgery in children. Report of three cases. 218 60

Neurological disorders associated with a malignant neoplasm, which is not caused by a direct effect such as metastasis, infiltration or compression, is called carcinomatous neuromyopathy. Subacute cerebellar degeneration recognized in this category is characterized by acutely or subacutely progressive cerebellar ataxia and widespread loss of Purkinje cells. There have been several reports of subacute cerebellar degeneration in lung carcinoma, ovarian carcinoma and Hodgkin's disease, but rare in urogenital malignancies. We present a patient with neurological disorder considered subacute cerebellar degeneration associated with HCG-beta positive seminoma. A 29-year-old man noticed a left intrascrotal mass in the summer of 1984. The mass began to grow in April, 1985 and diplopia, gait disturbance and dysarthria appeared late in May. He consulted our hospital on July 20, 1985. Serum human chorionic gonadotropin (HCG)-beta was elevated to 200 ng/ml but alpha-fetoprotein and carcinoembryonic antigen were normal. Left high orchiectomy was performed and the tumor was diagnosed histologically as typical seminoma. Bulky metastatic tumor was recognized in retroperitoneum on abdominal CT but brain CT was normal. VAB VI chemotherapy was performed. The retroperitoneal metastatic tumor disappeared and HCG-beta was normalized and complete remission achieved, but cerebellar symptoms still remain 14 months after remission. This case is considered to be subacute cerebellar degeneration associated with seminoma and is the second case with testicular carcinoma reported.
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PMID:[Subacute cerebellar degeneration with HCG-beta positive seminoma of the testis]. 245 60

A 42-year-old woman suffered unexplained weight loss followed by action tremor and difficulty initiating gait. Three months after onset of symptoms, infiltrating ductal carcinoma of the breast, metastatic to liver and lymph nodes, was diagnosed and treated briefly with cyclophosphamide, methotrexate, and 5-flourouracil (5FU). Severe symmetric action and postural tremor with a myoclonic component developed, with minimal rest tremor, severe dysarthria and dysphagia, small-stepped and slightly ataxic gait progressing to a bedbound state, and severe widespread dystonic posturing. The latter began as a typical parkinsonian posture of trunk and upper extremities and progressed to a fixed and painful flexion of the elbows and wrists and extension of fingers and neck. Sinemet, anticholinergics, baclofen, diazepam, and plasmapheresis gave no benefit. The patient died of complications of immobility 5 months after neurologic symptom onset. Autopsy revealed many pigment-laden macrophages in substantia nigra and moderate loss of pigmented neurons. Inflammation, Lewy bodies, and tumor were absent. Cerebellar Purkinje cells were moderately depleted. Mild neuronal loss and gliosis were present in globus pallidus and cerebellar cortex. Stains for anti-human IgG, IgM, kappa, and lambda were negative. This, to our knowledge, is the first report of paraneoplastic degeneration of substantia nigra or paraneoplastic parkinsonism.
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PMID:Paraneoplastic degeneration of the substantia nigra with dystonia and parkinsonism. 254 19

The first case was a 5-year-old girl treated with a total of 6000 rads after total removal of a left temporoparietal tumor extending into the basal ganglia. About 4 years after completion of the radiation therapy, she showed left hemiplegia and deterioration in her level of consciousness. A plain CT scan showed calcification in the region of the bilateral basal ganglia and low density area in the right fronto-parietal region. An enhanced CT revealed gyral enhancements in the pre- and postcentral gyrus of the right hemisphere. Left carotid angiograms showed a narrowing of the horizontal portion and an occlusion of the distal portion of the left anterior cerebral artery. The distal portion of the right anterior cerebral artery was filled through the anterior communicating artery. Right carotid angiograms revealed an occlusion of the terminal portion of the internal carotid artery, retrograde filling of the anterior and middle cerebral arteries by leptomeningeal anastomosis via the posterior cerebral artery, and partial filling of the anterior cerebral artery via the anterior falx artery. Preoperative arteriography did not show occlusion and stenosis of the cerebral arteries. Superficial temporal artery-middle cerebral artery anastomosis in the right hemisphere was performed. Regional cerebral blood flow measured during operation increased from 34 to 72 ml/100 gr/min due to the surgery. About two weeks after surgery, left hemiplegia disappeared completely. The second case was a 67-year-old man who had received radiotherapy, following surgery of a chromophobe pituitary adenoma. About one year after irradiation he began to complain of gait disturbance and dysarthria.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:[Therapeutic irradiation of brain tumor and cerebrovasculopathy]. 266 7


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