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  • 11
    Digitale Medien
    Digitale Medien
    Giant-cell tumour of the sphenoid bone: case report (1996)
    Springer
    Neuroradiology 38 (1996), S. 650-653 
    Details
    ISSN: 1432-1920
    Schlagwort(e): Key words Giant cell tumour ; Sphenoid bone ; Computed tomography ; Magnetic resonance imaging
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract We report an 18-year-old woman with a giant cell tumour of the sphenoid bone. CT demonstrated a lytic soft-tissue mass arising from the sphenoid body, extending to the left petrous apex and into the nasopharynx. On MRI the tumour had nonspecific signal intensity, but there was contrast enhancement on both examinations. CT was better for showing the extent of the osseous disease, whereas MRI was more accurate as regards soft-tissue extension.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002340050326
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  • 12
    Digitale Medien
    Digitale Medien
    Is there a dural wall between the cavernous sinus and the pituitary fossa? Anatomical and MRI findings (1998)
    Springer
    Neuroradiology 40 (1998), S. 627-630 
    Details
    ISSN: 1432-1920
    Schlagwort(e): Key words Pituitary gland ; Cavernous sinus ; Dura mater ; Anatomy ; Magnetic resonance imaging
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract We compared MRI studies of the sellar area and embryological and adult histological studies of the cavernous sinuses and pituitary fossa. MRI studies were performed in 50 normal subjects with coronal sections using a fast inversion-recovery sequence to demonstrate the dural walls of the cavernous sinus and pituitary fossa. With this sequence, dura mater appears as a high-signal linear structure. The lateral and superior walls of the cavernous sinus was easily identified on all studies, but demonstration of a dural wall separating the cavernous sinus from the pituitary fossa was not possible. These results correlated well with embryological and adult histological studies obtained from 14 specimens. The absence of a strong separation between the pituitary fossa and the cavernous sinus explains the high incidence of extension of pituitary tumours to the cavernous sinuses and vice versa.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002340050653
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  • 13
    Digitale Medien
    Digitale Medien
    CT and pneumographic studies of membranous occlusion of the aqueduct of Sylvius. A case report (1979)
    Springer
    Neuroradiology 18 (1979), S. 53-55 
    Details
    ISSN: 1432-1920
    Schlagwort(e): Aqueduct malformation ; Aqueduct stenosis ; Hydrocephalus
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary A case of membranous occlusion of the aqueduct of Sylvius with malformation of the skull and associated hydrocephalus is reported. The diagnosis was made with the help of CT, pneumoencephalography and ventriculography. In the literature membranous occlusion of the aqueduct has been considered to be a rare cause of hydrocephalus.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00346213
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  • 14
    Digitale Medien
    Digitale Medien
    Anatomy and radiology of the sellar spine (1981)
    Springer
    Neuroradiology 21 (1981), S. 5-7 
    Details
    ISSN: 1432-1920
    Schlagwort(e): Sella turcica ; Hypophysis ; Radiology of sella turcica ; Notochord ; Malformation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Five anatomical and radiological observations of a spine protruding into the pituitary fossa are reported. This osseous spine, about 4 mm long, arises in the midline from the inferior part of the anterior aspect of the dorsum sellae and extends upward and forward. The possible origins of this malformation are discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00518787
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  • 15
    Digitale Medien
    Digitale Medien
    CT findings in malignant meningiomas (1982)
    Springer
    Neuroradiology 23 (1982), S. 207-209 
    Details
    ISSN: 1432-1920
    Schlagwort(e): Computed tomography ; Meningiomas ; Brain neoplasms
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Recurrent meningiomas are due usually to incomplete removal as in the case of basal meningiomas where the tumour surrounding vessels and nervous structures cannot be completely excised. Recurrent meningiomas of the convexity are rare after resection. In most recurrent cases histological changes are noted which may explain the rapid growth, the aggressive nature and also the malignancy of the tumour. These changes include increased mitotic activity, necrosis and invasion of the adjacent brain parenchyma. CT findings in malignant meningiomas are related to the microscopic appearance of these tumours: tumoral necrosis determines heterogeneous enhancement; brain invasion explains the irregular outline of the tumour and sometimes the absence of surrounding low attenuation area. The authors report 5 malignant meningiomas in which the CT findings are correlated with the microscopic findings.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00342542
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  • 16
    Digitale Medien
    Digitale Medien
    Percutaneous puncture of spinal cysts in the diagnosis and therapy of syringomyelia and cystic tumors (1982)
    Springer
    Neuroradiology 24 (1982), S. 59-63 
    Details
    ISSN: 1432-1920
    Schlagwort(e): Spinal cord ; Neoplasms ; Myelography ; Metrizamide ; Syringomyelia ; Cysts ; Computed tomography ; Chiari malformation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary The experience with percutaneous puncture of intraspinal cystic lesions is reported in four cases: an extradural cyst demonstrated with air, a spinal cord tumor with lipiodol and two cases of syringomyelia with metrizamide. Percutaneous puncture of cystic lesions makes possible an accurate delineation of the lesion and a histological approach through biochemical and cytological analysis of the aspirated cystic fluid, while aspiration of the fluid of cystic tumors decompresses the spinal cord and thus plays a therapeutic role.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00344586
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  • 17
    Digitale Medien
    Digitale Medien
    Radiology of posterior lumbar apophyseal ring fractures: Report of 13 cases (1988)
    Springer
    Neuroradiology 30 (1988), S. 337-344 
    Details
    ISSN: 1432-1920
    Schlagwort(e): Spine ; Apophyseal ring ; Intervertebral disc ; Herniation ; Trauma ; Scheuermann's disease ; Computed tomography
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary The authors report radiological findings in 13 cases of avulsion of the posterior lumbar apophyseal ring. The lesion affected young adults in 10 cases and adolescents in 3 cases. The lesion involved the inferior endplate of L4 in 11, and of L5 in 1 patient, and of L3 in 1 patient. 6 patients presented with unilateral sciatica, 3 with bilateral sciatica, and 4 with low back pain. Acute spinal trauma was evident only in 2 adolescents. Radiological recognition of the lesion was possible on plain films in 9 cases. CT demonstrates association of avulsion of the posterior vertebral apophyseal ring and herniated disc in all cases. Avulsion of the posterior apophyseal ring has to be differentiated from posterior longitudinal ligament, annulus, or herniated disc calcifications, as well as from posterior degenerative ridge osteophytes. Controversy about physiopathology of the lesion remains: weakness of the apophyseal ring during childhood and in patients with Scheuermann's disease may explain avulsion of the apophyseal ring in association with median disc herniation.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00328185
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  • 18
    Digitale Medien
    Digitale Medien
    MR findings in mannosidosis (1990)
    Springer
    Neuroradiology 32 (1990), S. 485-487 
    Details
    ISSN: 1432-1920
    Schlagwort(e): MRI ; Brain ; Sella turcica ; Mucolipidoses ; Mannosidosis
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary MR findings are reported in three patients presenting mannosidosis. Among a family of 8 children, 4 presented typical clinical and biological abnormalities related to mannosidosis. Brain MR examinations including sagittal T1 and axial T2 sections were obtained in three patients of this family (one 25-year-old male, one 34-year-old female, and one 35-year-old female). MR scans demonstrate seven types of modifications: (1) brachycephaly, (2) thick calvaria, (3) verticalization of the chiasmatic sulcus, (4) poor pneumatization of the sphenoid body, (5) partial empty sella turcica (6) cerebellar atrophy, and (7) white matter signal modifications. High signal abnormalities involving the parieto-occipital white matter are identified on axial T2-weighted scans in the three patients and are probably related to demyelination and associated gliosis as described previously by several authors on specimens.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02426460
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  • 19
    Digitale Medien
    Digitale Medien
    Thoracic intradural arachnoid cyst: possible pitfalls with myelo-CT and MR (1991)
    Springer
    Neuroradiology 33 (1991), S. 90-91 
    Details
    ISSN: 1432-1920
    Schlagwort(e): Spinal cord ; Intradural arachnoid cyst ; MR ; Myelography ; CT
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary A thoracic intradural arachnoid cyst presenting as an intradural extramedullary mass highly suggestive of psammoma on myelogram and myelo-CT is reported in a 34-year-old female. High densities of the cyst were related to collection of contrast media within the cyst. However MR examination of the thoracic spinal cord including sagittal T1 (without and with contrast) and T2 studies failed to demonstrate the mass. Lack of MR changes were related on one hand to the small size of the cyst and to the absence of mass effect on the spinal cord, and on the other hand to a CSF-like signal of the contents of the cyst. Only combination of myelography, myelo-CT and MR allows precise diagnosis of small intradural arachnoid cysts; however MR is the method of choice for evaluation of large intradural subarachnoid cysts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00593348
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  • 20
    Digitale Medien
    Digitale Medien
    High signal in the adenohypophysis on T1-weighted images presumably due to manganese deposits in patients on long-term parenteral nutrition (1998)
    Springer
    Neuroradiology 40 (1998), S. 793-796 
    Details
    ISSN: 1432-1920
    Schlagwort(e): Key words Brain ; basal ganglia ; Pituitary gland ; Manganese ; Parenteral nutrition ; Magnetic resonance imaging
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Hypermanganesaemia is reported in patients on long-term parenteral nutrition. Deposition of manganese, giving high signal on T1-weighted images, may involve the basal ganglia. MRI in nine patients (mean age 51 years, range 31–75 years) on long-term parenteral nutrition (mean duration 30 months, range 6–126 months), demonstrated high signal in the anterior pituitary gland on T1-weighted sagittal and coronal images. The gland appeared normal on T2-weighted images. Signal intensity in the basal ganglia on T1-weighted images was increased in all patients. Endocrine assessment showed no significant abnormality. Neurological examination showed a mild parkinsonian movement disorder in one patient. Hypermanganaesemia was present in all nine (1.3–2.8 μmol/l, mean 1.87 μmol/l). The high signal in the anterior pituitary gland was probably related to deposition of paramagnetic substances, especially manganese.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002340050686
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