Introduction: Chondrosarcoma is a tumour with a cartilaginous matrix frequently encountered in long bones and the pelvis with rare sinonasal location. Patient and methods: We report the case of a 25-year-old patient who was referred to us for an extension work-up for sinonasal chondrosarcoma confirmed by anatomopathological examination. Results: Facial magnetic resonance imaging (MRI) confirmed by a CT scan showed an osteolytic tumour process of the hard palate and walls of the left maxillary sinus that was locally advanced. Conclusion: The sinonasal location of a chondrosarcoma is rare. Characterized by cross-sectional imaging, confirmation was provided by histological assessment.
Cauda equina syndrome is a rare neurological disease caused by compression of the cauda equina. The ponytail consists of the spinal nerves L2-L5, S1-S5 and the coccygeal nerve. We carried out a retroprospective study over a period of two years (24 months), ranging from January 01, 2020 to December 31, 2021 from the files of patients referred for lombosacral magnetic resonance imaging (MRI) or CT scan exploration in the context of low back pain or sciatica resistant to disabling medical treatment, neurological deficit of the lower limbs associated or not with the bladder and / or rectal sphincter disorders, without any notion of trauma, with as judgment criterion the demonstration of an anomaly responsible for compression of the roots of the ponytail. We collected seventy-six (76) patients, with an average age of 53.5 years old and as extremes ages 15 years and 89 years. We noted a female predominance with a sex ratio of 1.5 in favor of female sex. The most of patients were axplored with MRI, in 89 % of cases. Our patient history was dominated by cancer pathologies, with breast cancer in 24% of cases and prostatic cancer in 18% of cases. The symptomatology presented by the patients was mainly represented by sphencteric disorders in 47% of cases and lumboscialitica in 28% of cases. The conflicting disc herniation dominated the etiologies in 36 % of cases followed by secondary vertebral neoplasic lesions in 20% of cases . MRI and CT scans are very important radiological modalities in characterizing lesions responsible for cauda equina syndrome in adults. The CT scan is effective in the study of bone and the MRI in the study of nerve roots, intervertebral discs and paravertebral soft tissues.
Introduction: Epidermoid cysts of the temporal bone are rare, benign and slow-growing lesions. Patient and Methods: We report the case of a 69-year-old female patient followed up for a symptomatic intradiploic epidermoid cyst of the temporal scale and left mastoid region, which had been operated on but recurred. Results: MRI demonstrated a well-limited lesion seen as a hyposignal on T1-weighted images, hypersignal on T2-weighted images, on FLAIR and on diffusion-weighted images not enhanced by gadolinium. The tumour was compressive, and bone lysis was seen on CT. Conclusion: Epidermoid cysts of the temporal bone are rare, benign lesions whose diagnosis is based on fluid signals seen on MRI but absent on FLAIR sequences.
La myélinolyse centropontine (MCP) correspond à un état neurologique sévère.La physiopathologie exacte de la constitution des syndromes de démyélinisation osmotique est encore mal connue.Chez l'homme, la MCP survient généralement lorsque la correction du taux de sodium sérique dépasse 12 mEq/l/jour. LIRM est limagerie de choix pour le diagnostic. Nous rapportons le cas dun patient admis au service de neurologie pour tableau de paraplégie dinstallation progressive associé à des troubles de déglutition et dysarthrie avec à lIRM des hypersignaux T2 et FLAIR et diffusion centropontiques symétriques sétendant au niveau des pédoncules cérébelleux supérieurs faisant évoquer une MCP , sans anomalie du bilan sodique mais plutôt un déséquilibre glycémique chronique qui aurait eu les mêmes effets quune perfusion rapide de sérum salé hypertonique sur hyponatrémie.
The giant aneurysm of the subclinoid portion of the internal carotid artery is a relatively rare disease that can present serious complications. We present the case of a 40-year-old guy who was suffering from a headache and had complete ophthalmoplegia in his right eye. A brain scan shows a right temporal subdural hematoma, associated with subarachnoid hemorrhage, and total Sylvian subacute ischemic stroke. CT angiography and MRI showed a ruptured and partially thrombosed aneurysm of the subclinoid portion of the right internal carotid artery complicated by subarachnoid hemorrhage, a right subdural temporal hematoma, and total Sylvian ischemic stroke. Our purpose is to recognize the possibility of an aneurysmal rupture when evaluating an acute subdural hematoma, alone or in combination with Ischemic stroke.
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