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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Acta neurochirurgica 108 (1991), S. 40-44 
    ISSN: 0942-0940
    Keywords: Pineal cyst ; enlarged pineal gland ; infratentorial supracerebellar approach ; MRI ; occlusive hydrocephalus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Seven patients with non-neoplastic symptomatic lesions of the pineal gland have been operated on in our department since 1988. Clinical symptoms were slight and there were intermittent signs of a space occupying lesion in the quadrigeminal area, i.e. visual and gait disturbances. In three patients, obstructive hydrocephalus with related symptoms was found. Diagnosis was confirmed by use of MRI in sagittal planes, revealing a cystic lesion in five and a solid tumour in two patients. All patients were operated on without complications using an infratentorial supracerebellar approach. Histological examination showed glial cysts of the pineal gland in five patients. In the two solid specimens, normal pineal tissue was found. These lesions seem to be of special interest, as the only pathological property are their size: Both lesions — “too large pineal glands” — caused obstruction of the outlet of the third ventricle with subsequent hydrocephalus. Surgical treatment was curative in all cases with prompt relief of the symptoms. Clinical symptoms and signs, diagnostic and pathological findings, as well as the surgical results of these cases will be reported.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European radiology 5 (1995), S. 568-571 
    ISSN: 1432-1084
    Keywords: Infantile desmoid-type fibromatosis ; Skull ; CT ; MRI
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Infantile desmoid-type fibromatosis is a rare, benign, infiltratively growing tumor of the soft tissue. The histological classification is often confusing due to various patterns. Although surgical excision is the treatment of choice, local recurrence is high. Ultrasound, CT, and MRI cannot differentiate the different types of fibrous lesions, but are very essential, showing the localization and infiltrated tissues. We report an unusual case of desmoid-type fibromatosis destroying the temporal bone in a now-5-year-old boy. The literature contains only few reports of radiolological findings in patients with infantile fibromatosis.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-2102
    Keywords: Schlüsselwörter ADEM ; Akute demyelinisierende Enzephalomyelitis ; Multiple Sklerose ; Pathologie ; Radiologie ; Keywords ADEM ; Acute disseminated Encephalomyelitis ; Multiple sclerosis ; Pathology ; Radiology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract Among non-neoplastic lesions of the central nervous system, demyelinating pseudotumors of the group of acute disseminated encephalomyelitis (ADEM) most frequently occasion neurosurgical intervention for purposes of definitive diagnosis and thus enter the domain of the surgical pathologist. Typically, ADEM presents with multifocal, bilateral lesions in an asymmetrical distribution. Especially monolocular manifestations may be diagnostically challenging. Due to the acuteness of clinical symptoms and the expansive, space-occupying character of the lesions a diffuse glioma, a metastatic disease, a primary cerebral Non-Hodgkin's lymphoma, brain abscess, a parasitosis or an ischemic brain tissue necrosis may be suspected. This impression is supported by uptake of contrast-medium most pronounced at the periphery of the lesion and the subcortical location. The histomorphologic feature of relative axonal preservation in areas with acute myelin breakdown and lymphocytic infiltrates make the diagnosis of an acute primary demyelinating disease probable. A diagnosis of glioma may be prompted by the florid, cytologically atypical astrogliosis especially in intraoperative request. Based on a series of 14 cases of radiologically and bioptically documented cases of ADEM typical examples will be demonstrated and discussed.
    Notes: Zusammenfassung Demyelinisierende Pseudotumoren aus dem Formenkreis akuter disseminierter Enzephalomyelitiden (ADEM-Gruppe) gehören zu den häufigsten nichtneoplastischen Läsionen, die zumal in der bildgebenden neuroradiologischen Diagnostik das Bild einer Neoplasie vortäuschen können. Typischerweise handelt es sich bei der ADEM um multifokale, bilaterale asymmetrische Läsionen. Differenzialdiagnostisch sind v. a. seltene monolokuläre Manifestationen bedeutsam, bei denen aufgrund der akuten klinischen Symptomatik sowie des expansiven raumfordernden Charakters der Läsionen klinisch-radiologisch nicht selten ein hirneigener glialer Tumor, eine Karzinommetastase oder ein primär zerebrales Non-Hodgkin-Lymphom, gelegentlich auch eine ischämische Hirngewebsnekrose oder ein Abszess vermutet wird. Diese Annahmen werden durch die subkortikale Lokalisation und die marginal betonte Anreicherung von Kontrastmittel unterstützt. Der bioptische Nachweis einer relativ frischen Markschädigung und einer lymphozytären Entzündungsreaktion bei relativer Unversehrtheit axonaler Strukturen macht die Diagnose einer akuten primären Entmarkungserkrankung wahrscheinlich. Die floride reaktive Astrogliose mit z. T. pleomorphen tumorverdächtigen Reizformen der Astroglia kann so ausgeprägt sein, dass im Rahmen der intraoperativen Schnelldiagnostik ein Gliom in Erwägung gezogen wird. Exemplarisch werden Befunde einer Serie 14 radiologisch und stereotaktisch-bioptisch dokumentierter ADEM vorgestellt und diskutiert.
    Type of Medium: Electronic Resource
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