Concurrent delayed temporal and posterior fossa epidural hematomas

1983 ◽  
Vol 59 (2) ◽  
pp. 351-353 ◽  
Author(s):  
Luis A. Cervantes
Keyword(s):  
Computerized Tomography ◽  
Posterior Fossa ◽  
Epidural Hematoma ◽  
Content Type ◽  
Fine Print

✓ A case of delayed epidural hematoma presenting in two different intracranial compartments is described. The presumptive mechanism of the lesion is discussed and the value of early reevaluation by computerized tomography is stressed.

Lead encephalopathy presenting as a posterior fossa mass

1986 ◽  
Vol 65 (5) ◽  
pp. 713-715 ◽  
Author(s):  
J. Frederick Harrington ◽  
Timothy B. Mapstone ◽  
Warren R. Selman ◽  
Pamela Galloway ◽  
Carl Bundschuh
Keyword(s):  
Computerized Tomography ◽  
Posterior Fossa ◽  
Content Type ◽  
Lead Encephalopathy ◽  
Fine Print

✓ A case of lead encephalopathy with clinical and computerized tomography evidence of a midline posterior fossa mass is presented. The pathophysiology and the predilection for posterior fossa involvement are discussed.

Diagnostic value of 201Tl—single-photon emission computerized tomography studies in cases of posterior fossa hemangioblastomas

2001 ◽  
Vol 95 (2) ◽  
pp. 292-297 ◽  
Author(s):  
Takeo Kondo ◽  
Toshihiro Kumabe ◽  
Shin Maruoka ◽  
Takashi Yoshimoto
Keyword(s):  
Computerized Tomography ◽  
Posterior Fossa ◽  
Single Photon ◽  
Photon Emission ◽  
Magnetic Resonance Images ◽  
Thallium 201 ◽  
Homologous Region ◽  
Single Photon Emission ◽  
Content Type ◽  
Fine Print

Object. The 201Tl uptake index was evaluated for its usefulness in formulating a diagnosis of hemangioblastoma. Thallium-201—single-photon emission computerized tomography (SPECT) studies were performed in nine patients harboring hemangioblastomas in the posterior fossa and in five patients (six lesions) with gliomas in the posterior fossa. Methods. The 201Tl uptake index was defined as the ratio of mean counts of isotope per pixel in the tumor to mean counts of isotope per pixel in the homologous region of the healthy brain. The 201Tl uptake indices of the early image (TlE) and that of the delayed image (TlD) were calculated. The isotope retention index (RI) was calculated as (TlE − TlD)/TlE. The TlE was 2.7 ± 0.7 in hemangioblastomas and 2.9 ± 1.7 in gliomas (mean ± standard deviation). The TlD was 1.5 ± 0.4 in hemangioblastomas and 2.4 ± 1.6 in gliomas. There were no significant differences between hemangioblastomas and gliomas when TlEs and TlDs were compared. The isotope RI was 0.43 ± 0.07 in hemangioblastomas and 0.15 ± 0.1 in gliomas, showing a significantly higher RI in hemangioblastomas compared with gliomas (p < 0.01). Conclusions. Thallium-201 washout is significantly faster in hemangioblastomas. Hemangioblastoma is biologically benign, but contains a rich capillary network that forms a hypervascular tumor bed. Variations in its appearance on magnetic resonance images may cause difficulties in the differential diagnosis of hemangioblastoma. Thallium-201 SPECT studies can be used to distinguish hemangioblastomas from gliomas in the posterior fossa.

Spinal intramedullary spread of medulloblastoma

1986 ◽  
Vol 65 (2) ◽  
pp. 253-255 ◽  
Author(s):  
Stanley L. Barnwell ◽  
Michael S. B. Edwards
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Computerized Tomography ◽  
Posterior Fossa ◽  
Diagnostic Information ◽  
Resonance Imaging ◽  
Content Type ◽  
Fine Print

✓ The case of an 11-year-old boy is reported in whom two intramedullary lesions developed at the thoracic-cervical and thoracic-lumbar junctions 2½ years after resection and irradiation of a medulloblastoma in the posterior fossa. There was no evidence of subarachnoid spread of the tumor. Magnetic resonance imaging was used to localize these lesions, and provided much better diagnostic information than either computerized tomography scans or myelograms.

Posterior fossa xanthogranuloma

1979 ◽  
Vol 51 (5) ◽  
pp. 718-722 ◽  
Author(s):  
Jesús Vaquero ◽  
Guillermo Leunda ◽  
José M. Cabezudo ◽  
Manuel de Juan ◽  
José Herrero ◽  
...  
Keyword(s):  
Choroid Plexus ◽  
Computerized Tomography ◽  
Posterior Fossa ◽  
Lateral Ventricle ◽  
Content Type ◽  
Similar Density ◽  
The Right ◽  
Fine Print

✓ A large subdural xanthogranuloma was removed from the posterior fossa of a 53-year-old woman with symptoms of Hand-Schüller-Christian disease. Two additional masses with similar density on computerized tomography were found in the hypothalamus and in the choroid plexus of the right lateral ventricle.

Observations on 82 patients with extradural hematoma

1981 ◽  
Vol 54 (2) ◽  
pp. 179-186 ◽  
Author(s):  
Francisco Cordobés ◽  
Ramiro D. Lobato ◽  
Juan J. Rivas ◽  
María J. Muñoz ◽  
Diego Chillón ◽  
...  
Keyword(s):  
Computerized Tomography ◽  
Epidural Hematoma ◽  
Ct Scanning ◽  
Accurate Diagnosis ◽  
The Other ◽  
Extradural Hematoma ◽  
Cerebral Lesions ◽  
Content Type ◽  
Fine Print

✓ A consecutive, unselected series of 82 patients with epidural hematoma treated between 1973 and 1980 is presented. Forty-one patients were managed before the advent of computerized tomography (CT) and the other 41 after this neuroradiological method was available. Mortality and disability rates which were 29.2% and 31.7% during the pre-CT period decreased to 12.1% and 19.5%, respectively, with the aid of CT scanning. This technique allowed a more rapid and accurate diagnosis of the hematomas than angiography, and defined better the presence and the evolutional changes of the associated cerebral lesions. As a consequence, surgery has been more effectively planned and executed during the CT era.

Symptomatic subependymoma of the fourth ventricle

1981 ◽  
Vol 55 (5) ◽  
pp. 841-844 ◽  
Author(s):  
Angelo Gandolfi ◽  
Riccardo E. Brizzi ◽  
Filomeno Tedeschi ◽  
Paolo Paini ◽  
Pellegrino Bassi
Keyword(s):  
Differential Diagnosis ◽  
Computerized Tomography ◽  
Posterior Fossa ◽  
Fourth Ventricle ◽  
Frozen Section ◽  
Surgical Removal ◽  
Tumor Type ◽  
Content Type ◽  
Direct Involvement ◽  
Fine Print

✓ Symptomatic subependymomas of the fourth ventricle are rare and usually not included in the preoperative differential diagnosis of tumors in this region. The case of a 63-year-old man with fourth ventricle subependymoma is described. For several years he had suffered with nausea and vomiting, and now presented signs of direct involvement of the posterior fossa. He was investigated preoperatively with computerized tomography, but the ultimate diagnosis was not suspected at that time. The tumor was diagnosed as an subependymoma at operation and was totally excised. This tumor type can easily be recognized on intraoperative frozen section, and its diagnosis should always lead to an attempt at complete surgical removal.

Isolated ventricles following intraventricular hemorrhage

1985 ◽  
Vol 62 (3) ◽  
pp. 357-362 ◽  
Author(s):  
Theodore W. Eller ◽  
Joseph F. Pasternak
Keyword(s):  
Computerized Tomography ◽  
Posterior Fossa ◽  
Fourth Ventricle ◽  
Intraventricular Hemorrhage ◽  
Clinical Signs ◽  
Premature Neonate ◽  
Content Type ◽  
Isolated Ventricle ◽  
Tomography Scanning ◽  
Fine Print

✓ Panventricular enlargement often follows intraventricular hemorrhage in the premature neonate. During a recent 12-month period, the authors identified five infants who required shunting because of symptomatic post-hemorrhagic hydrocephalus, which was progressive despite serial lumbar punctures and the use of indwelling subcutaneous ventricular reservoirs. In the first 6 months following placement of the initial shunt, four of the infants required an additional shunt for isolated ventricles. Two children had isolation of the lateral ventricles and required bilateral shunts. Two other children had isolation of the fourth ventricle from the lateral ventricular system and required posterior fossa shunts. All of the children were treated successfully using multiple shunts. In all cases, progressive dilation of the isolated ventricle was unaccompanied by the usual clinical signs of shunt malfunction. It appears that isolated ventricular systems are common following post-hemorrhagic hydrocephalus and these children must be followed closely with ultrasound and computerized tomography scanning.

Supratentorial intracerebral hemorrhage following posterior fossa surgery

1978 ◽  
Vol 49 (6) ◽  
pp. 881-886 ◽  
Author(s):  
Stephen J. Haines ◽  
Joseph C. Maroon ◽  
Peter J. Jannetta
Keyword(s):  
Differential Diagnosis ◽  
Intracerebral Hemorrhage ◽  
Computerized Tomography ◽  
Posterior Fossa ◽  
Diagnostic Method ◽  
Posterior Fossa Surgery ◽  
Content Type ◽  
Level Of Consciousness ◽  
Fine Print

✓ Five cases of supratentorial intracerebral hemorrhage following posterior fossa surgery are reported. Possible etiologies are discussed, but in only one case can a definite etiology (hypertension) be found. The differential diagnosis of declining level of consciousness after posterior fossa surgery must include supratentorial intracerebral hemorrhage, and computerized tomography seems to be the diagnostic method of choice.

Epidural hygroma of the posterior fossa

1983 ◽  
Vol 58 (4) ◽  
pp. 586-588 ◽  
Keyword(s):  
Computerized Tomography ◽  
Posterior Fossa ◽  
Preoperative Diagnosis ◽  
Clinical Presentation ◽  
Mechanism Of Formation ◽  
Content Type ◽  
Correct Preoperative Diagnosis ◽  
Wallenberg’S Syndrome ◽  
Wallenberg's Syndrome ◽  
Fine Print

✓ A case of posttraumatic epidural hygroma is reported. This child presented with occipital injury. Slowly but progressively he developed bilateral Wallenberg's syndrome and retrocollis. Correct preoperative diagnosis was made with the aid of computerized tomography. The case is discussed with emphasis on the mechanism of formation of an epidural hygroma and its clinical presentation.

Diverticulum of the lateral ventricle causing cerebellar ataxia

1983 ◽  
Vol 59 (5) ◽  
pp. 895-898 ◽  
Author(s):  
Susumu Wakai ◽  
Junichi Narita ◽  
Kazumasa Hashimoto ◽  
Masakatsu Nagai
Keyword(s):  
Cerebellar Ataxia ◽  
Computerized Tomography ◽  
Posterior Fossa ◽  
Ventriculoperitoneal Shunt ◽  
Lateral Ventricle ◽  
Medial Wall ◽  
Content Type ◽  
Ventricular Diverticulum ◽  
Fine Print

✓ A case of ventricular diverticulum causing cerebellar ataxia is presented. Computerized tomography clearly demonstrated the aperture of the diverticulum in the medial wall of the trigone and its extension into the posterior fossa. The diverticulum regressed and the cerebellar ataxia disappeared after placement of a ventriculoperitoneal shunt.

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