RESUMO
To evaluate the experience of the university of Jordan hospital regarding knee magnetic resonance imaging and to compare our findings with those published in the medical literature. 575 knee magnetic resonance imaging exams for 569 patients performed over the period of 10 years were reviewed. 109 patients, 66 males and 43 females with a percentage of [19.1%] had normal knee magnetic resonance image and were excluded from the study while the remaining 460 patients [80.9%] with variable abnormalities were included in our study. Variable knee pathologies were noted, the most common was knee fluid found in 381 patients representing [81.7%] of the pathologies detected, followed by bone marrow edema in 240 patients [51.5%], while cruciate ligament tear of the knee was found in 205 patients [43.99%], followed by meniscal tear in 184 patients [39.48%] and meniscal degeneration in 135 patients [28.96%]. Finally, osteoarthrosis which was the least common finding seen in 63 patients [13.5%]. Patients referred for knee magnetic resonance imaging scanning in the university of Jordan hospital showed diverse imaging findings with the most common abnormality detected being joint fluid followed by bone marrow edema and cruciate ligament tear. The great benefit from knee magnetic resonance imaging was in diagnosing meniscal tear, staging fractures and characterization of other miscellaneous pathologies. The prevalence of knee pathologies among our patients as revealed by knee magnetic resonance imaging was not in concordance with what is published in the literature especially for gender distribution of anterior cruciate ligament tear
RESUMO
Meningiomas are the most common benign intracranial tumor, accounting for 15-30% of all primary intracranial tumors. They are usually diagnosed between 40-60 years and they are more common in females, but the aggressive type is more common in men and children. Pathologically, Meningiomas are divided into three grades: 1-Benign [90%] 2-Atypical [5-7%] 3-Anaplastic [3-5%]. The gross appearance of Meningioma is usually globular mass with regular surfaces and attached to the dura, but there is a certain type called meningioma en plaque, has a flattened appearance that conforms to the curves of the brain and the inside of the skull. Studying the immunohistochemistry and the biological activity of this tumor showed the presence of Epithelial Membrane Antigen [EMA] in 80% of cases, in addition to the presence of progesterone receptors in 57- 67% of cases which is associated with a good histological grade, lower frequency of recurrence, and overall favourable prognosis. Many causes are thought to be associated with meningioma like trauma, viral infection, radiation and genetic factors. The signs and symptoms are variable, and some of them are specific to the location of the tumor. The diagnosis of meningioma is done by CT scan and MRI, in addition to nuclear imaging and MRSpectroscopy. In many cases, angiography is also done either conventional or via MRAngiography. The treatment methods depend on the size and site of tumor, patient's age and clinical presentation starting by clinical observation and ending by surgical management. This article will discuss all of the above in detail with review of the medical literature