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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Skeletal radiology 26 (1997), S. 615-618 
    ISSN: 1432-2161
    Keywords: Key words Ossifying fibromyxoid tumor of soft parts
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  This case report describes an ossifying tumor in the left musculus erector spinae in a 32-year-old man. Radiologically it showed irregular lamellar bone formation in the periphery, demonstrating as juxtacortical and macroscopically sarcoma-like features. Histologic it was diagnosed as an ossifying fibromyxoid tumor of soft parts (OFTSP). The CT features of this tumor have never previously been reported. This is the first time pulmonary metastases, malignant pleural effusion, and death of the patient directly related with an OFTSP have been described.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Der Radiologe 39 (1999), S. 584-590 
    ISSN: 1432-2102
    Keywords: Schlüsselwörter Nierenzellkarzinom ; Tumorstaging ; Spiral-CT ; MRT ; Key words Renal cancer ; Staging ; Spiral CT ; MRT
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The routine staging work-up for renal cancer includes a contrast-enhanced multiphasic spiral CT and a chest radiograph. If there is doubt regarding the presence and extent of (supradiaphragmatic) IVC thrombus, MR imaging should be performed. Dynamic contrast-enhanced MR imaging should be used in place of CT in any patient with severe renal dysfunction, symptomatic polycystic kidney disease, or a history of allergy to iodinated contrast media. Cavography is no longer needed in the era of (adaptive array detector) spiral CT and MR venography.
    Notes: Zusammenfassung Das diagnostische Routine Work-up für das Nierenzellkarzinom-Staging beinhaltet ein mehrphasisches Abdomen Spiral-CT und ein Thoraxröntgen. Bei unklarem Spiral-CT Befund in der Fragestellung intravenöse Tumorausdehnung kann die kontrastmittelverstärkte MRT eine wertvolle diagnostische Alternative darstellen. Die primären Indikationen zur renalen MRT stellen Patienten mit absoluter oder relativer Kontraindikation für nichtionische Röntgenkontrastmittel, Patienten im Stadium der kompensierten (noch nicht dialysepflichtigen) renalen Insuffizienz und Patienten mit symptomatischer polyzystischer Nierendegeneration dar. Die konventionelle Cavographie ist im Zeitalter der (Mehrzeilen-) Spiral-CT-Venographie und MR-Venographie obsolet.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1920
    Keywords: Ganglioneuroma, adult presentation ; Parapharyngeal tumours
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Ganglioneuroma, a rare benign tumour, very occasionally presents in adult life. We report a case with the additional unusual feature of a retropharyngeal location.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 40 (1998), S. 261-263 
    ISSN: 1432-1920
    Keywords: Key words Head and neck ; neoplasms ; Sarcoma ; synovial ; Computed tomography ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We present the CT and MRI findings of a histologically proven synovial sarcoma arising in the left parapharyngeal space of a 21-year-old man. CT was useful for confirming the presence of calcification within the tumour, which may be a favourable prognostic sign, and in excluding involvement of cortical bone. The CT and MRI findings were, however, nonspecific. MRI was superior to CT for assessing the topographical relationships of the tumour to the vessels and the invasion of neighbouring structures.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1920
    Keywords: Key words Chordoma chondroid ; Drop metastases ; Dumbbell tumours
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Metastasising chordomas are extremely rare and only four cases with drop metastases have been reported. We report a patient with an intracranial chondroid chordoma, typically involving the clivus, treated by repeated resection, percutaneous transluminal embolisation and radiosurgery. During follow-up with MRI asymptomatic intradural drop metastases were observed throughout the spine, with transgression of the intervertebral foramen, forming a “dumbbell”.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-1920
    Keywords: Key words Dermoid cyst ; nasal ; Nose ; tumours ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report a child with a nasal dermoid cyst, the intracranial extension of which was shown on contrast-enhanced MRI, facilitating complete surgical removal
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-1920
    Keywords: Key words Ganglioneuroma ; adult presentation ; Parapharyngeal tumours
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Ganglioneuroma, a rare benign tumour, very occasionally presents in adult life. We report a case with the additional unusual feature of a retropharyngeal location.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    European radiology 6 (1996), S. 704-706 
    ISSN: 1432-1084
    Keywords: Ovary, torsion ; Magnetic resonance imaging ; Adnexal torsion ; children
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Torsion of the adnexa can be the cause of abdominal pain. An immediate diagnosis is very important because early surgical intervention is the only way to save the ovary from necrosis. Torsion of a normal adnexa is rare, but occurs more frequently than is generally appreciated. If US findings are equivocal, MRI can provide additional information. In our case the MRI findings leading to the diagnosis of ovarian torsion were: (a) A medial ovarian mass existed with dislocation of the uterus to the affected side with hyperintense, cystic lesions on T2-weighted images at the periphery of the ovary. (b) Beaked protrusion of the mass continuing in a band-like structure connecting it with the uterus obviously represented the Fallopian tube. (c) Low and inhomogeneous signal intensity of the stroma on T1- and T2-weighted images and lack of gadolinium uptake were indicative of infarction.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1279-8517
    Keywords: Paranasal sinuses, anatomy ; Paranasal sinuses, childhood ; Paranasal sinuses, MR-Imaging ; Sphenoid bone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Afin de démontrer les aspects fondamentaux du développement du sinus sphénoïdal pendant l'enfance, nous avons revu l'aspect en IRM du sinus sphénoïdal de 401 patients agés de moins de 15 ans. L'étude de la moelle osseuse, le développement de la pneumatisation, la croissance et le cloisonnement du sinus sphénoïdal ont été explorés en séquences pondérées en T1 et en T2. Le sinus sphénoïdal se présente, en séquence pondérée en T1, avec un signal faible et uniforme (moelle osseuse rouge) chez tous les enfants agés de moins de 4 mois. Ce signal hypo-intense devient hyper-intense (transformation de la moelle osseuse) à partir du 4 ème mois. Le début de la pneumatisation est noté à 13–15 mois. A l'âge de 43–48 mois, la partie antérieure du sinus sphénoïdal est pneumatisée chez 85 % des enfants. La pneumatisation est complète chez tous les patients agés de plus de 10 ans. La croissance dans chaque direction de l'espace est caractéristique. L'apparition d'un septum médian est observée à une fréquence variable par tranche d'âge, avec un maximum de 77 %. Les variations existent dans 4,5 % à 20 % des cas. La connaissance de ce phénomène peut servir de référence pour évaluer le développement normal et anormal du sinus sphénoïdal et être d'un grand intérêt dans le diagnostic et le traitement des affections du sinus sphénoïdal et des régions voisines chez l'enfant.
    Notes: Summary To obtain baseline standards of normal age-related development of the sphenoid sinus during childhood magnetic resonance images of the sphenoid sinus in 401 patients less than 15 years old were reviewed. T1-weighted sagittal and T2-weighted axial scans were evaluated for bone marrow conversion, development of pneumatization, spatial enlargement and septation of the sphenoid sinus. The sphenoid sinus had a uniformely low signal intensity (red bone marrow) on T1-weighted images in all children less than 4 months old. Signal intensity changes from hypo- to hyperintense (bone marrow conversion) started at age of 4 months. Onset of pneumatization was observed in 12% of the patients at age 13–15 months. By age 43–48 months, 85% of the patients showed pneumatization of the anterior part of the sphenoid bone. Pneumatization was complete in all patients older than 10 years. Enlargement of the sinus showed a characteristic profile in each dimension. Median septation was observed irregularly with age, with a maximum of 77%. Septum variants were noticed between 4.5% and 20%. The recognition of this phenomenon may serve as a reference for evaluating normal and abnormal development of the sphenoid sinus and may be of great value for diagnostic and therapeutic management of pathologic conditions of the child's sphenoid sinus and its surrounds.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Pediatric radiology 20 (1989), S. 67-71 
    ISSN: 1432-1998
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract 45 children presenting with acute hip pain were prospectively evaluated with conventional radiography, radioisotope bone scan, and magnetic resonance imaging (MRI). The final diagnoses were transient synovitis (n=17), septic arthritis (n=2), Legg-Calve-Perthes disease (LCPD,n=13), epiphyseal dysplasia (n=2), other conditions (n=4), and normal findings (n=7). In the work-up MRI provided more morphologic information than other techniques and enlarged the diagnostic possibilities. It was the only imaging technique able to give an early indication of bone marrow involvement in systemic diseases. For the early diagnosis of LCPD, MRI was as sensitive as isotope bone scan and more precise than conventional radiography. In the follow-up of LCPD patients MRI was not able to indicate the start of revascularisation of the necrotic area, which bone scans showed reliably in six patients: but MRI provided excellent evaluation of the position, form and size of the femoral head and the surrounding soft tissues.
    Type of Medium: Electronic Resource
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