Cases reported "Brain Neoplasms"

Filter by keywords:



Filtering documents. Please wait...

1/159. Recurrent short rib-polydactyly syndrome with unusual associations.

    short rib-polydactyly syndrome (SRPS) is manifested by short-limb dwarfism, short ribs with thoracic hypoplasia, and polydactyly. This inheritable syndrome has distinct imaging findings on prenatal sonography, and ancillary findings on both pre- and postnatal assessments may enable individual cases to be classified into 1 of 4 subtypes. In this report, we present a recurrent case of SRPS that was associated with a cystic hygroma and choroid plexus cysts. Although cystic hygromas are not uncommonly seen in skeletal dysplasias, the presence of concomitant cystic hygroma and choroid plexus cysts suggests a chromosomal abnormality such as trisomy 18.
- - - - - - - - - -
ranking = 1
keywords = plexus
(Clic here for more details about this article)

2/159. A case of a malignant melanoma with late metastases 16 years after the initial surgery.

    We report a case of a pulmonary metastasis 16 years after the initial surgery for a malignant melanoma. The patient was a 58-year-old Japanese man. In 1976, he had a pigmented skin lesion with a diameter of 8 mm on his right third finger. He received an amputation of the finger and a dissection of the right axillary. Histological examinations of the tumor revealed a feature of a malignant melanoma with infiltration of the papillary layers of the dermis, 1.5 mm in thickness. The histological subtype was considered to be an acral lentiginous melanoma with a mixed spindle-epithelioid cell pattern. There was no regional lymph node metastasis. In December 1992, when he was 74-years-old, a round tumor in the left lower lung was discovered by chest radiography. In February 1993, he received a left lower lobectomy of the lung. Histological examination revealed a feature of a malignant melanoma with predominantly epithelioid cells and this was considered to be a metastasis from the initial skin lesion. Five months after the lobectomy, he died from a hemorrhage of a metastatic brain tumor. This case indicated the importance of periodic, life-long follow-up in treating malignant melanomas.
- - - - - - - - - -
ranking = 0.013803155211665
keywords = chest
(Clic here for more details about this article)

3/159. Cerebral metastasis presenting with altitudinal field defect.

    A 75-year-old man presented with a unilateral inferior altitudinal visual field defect and a history of weight loss and night sweats. The acuity in the affected eye was 20/200, otherwise his ocular examination was normal. neuroimaging demonstrated a post-fixed chiasm, with a frontal metastasis compressing the intracerebral portion of the optic nerve. A chest x-ray showed classical cannon ball lesions, secondary to malignant melanoma. This is the first case report of an intracerebral tumor producing an inferior altitudinal field defect.
- - - - - - - - - -
ranking = 0.013803155211665
keywords = chest
(Clic here for more details about this article)

4/159. October 1998--61 year old male with brain tumor and oral, lung, and palpebral masses.

    In Jan. 97 a gliosarcoma was diagnosed in a 61-year- old man after a 6-month history with neurological deficits. A total physical examination, laboratory tests, chest x-ray and abdominal ultrasound scanning revealed no gross abnormalities. Surgery was followed by brain radiation therapy and 6 months later there were metastases to the oral cavity, right palpebra and both lungs. The histological findings of the oral and palpebral metastases revealed only the sarcomatous component. We are aware of 15 cases of gliosarcoma with extraneural metastases, and in 4 of these, the metastases contained only the sarcomatous component. We believe that our case represents the fifth case of pure sarcomatous metastases.
- - - - - - - - - -
ranking = 0.013803155211665
keywords = chest
(Clic here for more details about this article)

5/159. Imaging features of intraventricular melanoma.

    We present the MR imaging findings in a patient with symptoms of increased intracranial pressure and a mass in the left lateral ventricle. The mass showed increased signal intensity on T1-weighted images and low signal intensity on T2-weighted images. The histologic diagnosis was that of melanoma, and detailed physical and funduscopic examinations disclosed no evidence of a primary lesion. We believe that the mass was a primary intraventricular melanoma, possibly arising from the choroid plexus, and we discuss the mechanisms that may be responsible for its occurrence in this location.
- - - - - - - - - -
ranking = 0.5
keywords = plexus
(Clic here for more details about this article)

6/159. The Chiari II malformation: lesions discovered within the fourth ventricle.

    Structural lesions associated with the Chiari II malformation have been identified within the fourth ventricle in 8 patients. During the 42-month period encompassing the operations of the 7 patients treated surgically, only 9 other patients were explored without the discovery of some associated structural lesion. The patients ranged in age from 2 to 26 years. The following lesions were identified: glial or arachnoidal cysts (3 patients), glial or choroidal nodules (3 patients) and subependymoma (2 patients). These lesions were all situated in the roof of the fourth ventricle adjacent to or interspersed with the choroid plexus. Only the cystic lesions were identified by preoperative imaging. In only 1 case did the associated lesion, a 2-cm cyst, seem to contribute to the patient's clinical presentation. Structural lesions of the fourth ventricle associated with the Chiari II malformation are common in patients who are submitted to decompression. These lesions may be dysplasias of developmental origin, or they may be reactive lesions related to chronic compression and ischemia. They do not necessarily required biopsy or excision.
- - - - - - - - - -
ranking = 0.5
keywords = plexus
(Clic here for more details about this article)

7/159. Preoperative PET activation for assessment of motor cortex area in precentral chondroma.

    BACKGROUND: A main problem in the preoperative planning for precentral tumors is the exact assessment of the spatial relationship between the tumor and the functionally relevant brain areas, which may be difficult using only morphologically oriented imaging (CT, MRI). Therefore, we applied motor activation PET and PET/MRI overlay in a patient with a precentral tumor. DESCRIPTION: We report the case of a 21-year-old woman suffering from progressive right-sided headache and intermittent dysesthesia of the left leg. MRI showed a hypointense tumor with inhomogenous contrast enhancement in the right precentral area. For preoperative assessment of the spatial relationship between the tumor and the motor cortex area, the patient underwent two F-18-fluorodeoxyglucose positron emission tomography (PET) scans (1. resting condition and 2. motor activation of the left leg) and subsequent calculation of subtraction images of activation minus rest. Fusion of PET and MRI data (PET/MRI overlay) was performed for bimodal function and morphology presentation. PET revealed an activation pattern behind and below the tumor, indicating that the motor cortex area was shifted to the back. PET findings were confirmed by intraoperative electrophysiology. Cortical stimulation combined with intraoperative neuronavigation localized the motor area of the left foot and leg exactly at the dorsal border, below and lateral to the lesion. After complete resection of the solid tumor, histopathological examination revealed a chondroma. The postoperative course was uneventful, and the patient was discharged without neurological deficits. CONCLUSIONS: This case shows that biomodal imaging (PET/MRI) provides a noninvasive exact assessment of functionally important cortex areas for preoperative planning in patients with cerebral lesions.
- - - - - - - - - -
ranking = 0.27214788873521
keywords = behind
(Clic here for more details about this article)

8/159. Fatal pulmonary embolism in a child undergoing extra-ventricular drainage surgery--a case report.

    thromboembolism is rather common in neurological patients and patients with brain tumor, who are bed-ridden or with partial immobile limb. In serious instances morbidity and mortality are inevitable. We present a case report on a fatal pulmonary embolism in a 2-year-old girl who underwent extra-ventricular drainage procedure under general anesthesia for occipital subdural effusion, a sequela of the former surgery undertaken to remove the choroid plexus papilloma 13 days ago. Sudden cardiac arrest occurred during induction of anesthesia and she finally succumbed in spite of vigorous cardiopulmonary resuscitation. Transthoracic and transesophageal echocardiography performed in the course of resuscitation disclosed thrombi of various sizes scattering in right atrium, the right ventricle, main pulmonary trunk, and the left pulmonary artery. The cause of death was thought to be severe obstruction of right ventricular outflow tract by large thrombi. The etiological factors which possibly led to the thrombosis were discussed, and the methods of diagnosis and treatment were also explored.
- - - - - - - - - -
ranking = 0.5
keywords = plexus
(Clic here for more details about this article)

9/159. Planning and simulation of neurosurgery in a virtual reality environment.

    OBJECTIVE: To report our experience with preoperative neurosurgical planning in our stereoscopic virtual reality environment for 21 patients with intra- and extra-axial brain tumors and vascular malformations. methods: A neurosurgical planning system called VIVIAN (Virtual Intracranial Visualization and Navigation) was developed for the Dextroscope, a virtual reality environment in which the operator reaches with both hands behind a mirror into a computer-generated stereoscopic three-dimensional (3-D) object and moves and manipulates the object in real time with natural 3-D hand movements. Patient-specific data sets from multiple imaging techniques (magnetic resonance imaging, magnetic resonance angiography, magnetic resonance venography, and computed tomography) were coregistered, fused, and displayed as a stereoscopic 3-D object. A suite of 3-D tools accessible inside the VIVIAN workspace enabled users to coregister data, perform segmentation, obtain measurements, and simulate intraoperative viewpoints and the removal of bone and soft tissue. RESULTS: VIVIAN was used to plan neurosurgical procedures primarily in difficult-to-access areas, such as the cranial base and the deep brain. The intraoperative and virtual reality 3-D scenarios correlated well. The VIVIAN system substantially contributed to surgical planning by 1) providing a quick and better understanding of intracranial anatomic and abnormal spatial relationships, 2) simulating the craniotomy and the required cranial base bone work, and 3) simulating intraoperative views. CONCLUSION: The VIVIAN system allows users to work with complex imaging data in a fast, comprehensive, and intuitive manner. The 3-D interaction of this virtual reality environment is essential to the efficient assembly of surgically relevant spatial information from the data derived from multiple imaging techniques. The usefulness of the system is highly dependent on the accurate coregistration of the data and the real-time speed of the interaction.
- - - - - - - - - -
ranking = 0.27214788873521
keywords = behind
(Clic here for more details about this article)

10/159. Midline developmental anomalies with lipomas in the corpus callosum region.

    Three children with complete or partial callosal aplasia and intracranial lipoma in the corpus callosum region were investigated. Two lipomas were tubulonodular; one replaced the entire corpus callosum structure. Accompanying anomalies affected the cingulate gyrus, septum pellucidum, and choroid plexus. In one case, diagnosis was made in utero in the 25th gestational week by ultrasonography; in the second case it was made on the first day of life, also by screening ultrasonography. Two children had mild spastic distal diparesis; one complained of chronic headache. electroencephalography showed no abnormalities; epilepsy anamnesis was negative. Somatosensory and visual evoked potentials showed prolonged conduction in two cases. Surgery was not indicated. Because of the risk of developing epileptic seizures, regular electroencephalographic follow-up investigations are essential.
- - - - - - - - - -
ranking = 0.5
keywords = plexus
(Clic here for more details about this article)
| Next ->


Leave a message about 'Brain Neoplasms'


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