Biomedical subjects
Publications and source records attributed to E Geusens.
Cervical spinal arteriovenous malformations and fistulas are rare but important entities because they are potentially curable. MRI and angiography are the most useful imaging modalities for the diagnosis. On contrast-enhanced CT imaging, they can mimic a tumor. A case report of cervical spinal arteriovenous malformation, initially believed to be a tumor, is presented.
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We describe a case of mucocele of the appendix, observed incidentally in a 42-year-old man. The plain film, ultrasound and CT features are reviewed. Adequate diagnosis and resection are important because of the risk of rupture and development of pseudomyxoma peritonei.
Cystic lesions of the adrenal gland are rare entities. Pseudocysts account for 40% of all cystic tumors of the adrenal glands, and are a consequence of hemorrhage and degeneration. Clinical signs are aspecific. On US and CT, a well defined large mass with cystic appearance is found. Thickening and irregularity of the cystic wall areas of different attenuation values within the cyst and central calcifications are due to hemorrhage. The more complex pseudocysts should be distinguished from cystic degeneration in adrenal malignancy and from cystic hypernephroma in the renal upper pole.
MRI findings are described in two patients with subdural haematomas isodense on CT. In one patient, admitted 6 weeks after trauma, a chronic subdural haematoma showed extreme hypointensity on T2-weighted images, suggesting acute trauma, and therefore acute rebleeding. In the second patient with severe anaemia, an acute subdural haematoma was hyperintense on T2-weighted images, suggesting chronic trauma; this may be explained by the low haematocrit and a possible mixture of blood with cerebrospinal fluid. The MRI features of subdural haematomas and hygromas have to be kept in mind, in order not to misjudge the age of the haematoma.