نتایج جستجو برای: diagnosis of brain tumor
تعداد نتایج: 21291769 فیلتر نتایج به سال:
background diffusion-weighted imaging (dwi) is a form of magnetic resonance imaging (mri) based on measuring the random brownian motion of water molecules within the biological tissues and is particularly useful in tumor characterization. objectives the purpose of this study was to evaluate the diagnostic value of dw mri and the apparent diffusion coefficient (adc) for preoperative grading of a...
neurofibromatosis type 2 is an inherited disease. the main manifestation of the disease is the development of symmetric, non-malignant brain tumors in the region of the cranial nerve viii usually as schwannoma. we report here a 20-year-old woman with primary intracranial malignant nerve sheath tumor located in the left cerebellopontine angle. histologically, the tumor showed malignant spindle c...
Introduction: Behcet's disease is a chronic disease with multisystem involvement characterized clinically by oral and genital aphthae, cutaneous lesions and ophthalmologic, neurologic and gastrointestinal manifestation. Nervous system involvement occurs in 5.3 – 30% of patients, mostly in brain stem and basal ganglia. The common manifestations are pyramidal signs, central nervous plegia, pseudo...
In accordance with Article 2 of the Executive Bylaw of Organ Transplantation Law, diagnosis and confirmation of brain death shall be made by a neurologist, an internist, and an anesthesiologist. On the basis of the civil liability, those individuals who declare brain death; should indemnify the damages if they impose as a result of their diagnosis in this process. Islamic criminal law 1375 (199...
Introduction: Microcystic adnexal tumor is a rare sclerosing variant of ductal carcinoma of eccrine sweat gland which is deeply invasive. This tumor which is said to have high recurrence rate is often misdiagnosed as other benign or malignant skin lesions and improper treatment is administered. Case Report: We report herein a 59-year-old man who underwent incisional biopsy for a congenital ...
introduction: skull base meningiomas constitute a large proportion of the meningiomas, which are the most common benign brain tumors. the treatment of skull base meningiomas is specially challenging and controversial due to the proximity of these tumors to the vital brain structures. radiosurgery is now emerging as an efficient alternative treatment modality which involves the ablation of tumor...
We describe a 51-year-old woman with a cerebral infarction that showed transient accumulation of thallium-201. On admission, this lesion was well-enhanced by gadolinium injection and gradually expanded, mimicking a malignant brain tumor. A cerebral angiogram, however, did not indicate the presence of a malignant brain tumor. Ethyl cysteinate dimer single photon computerized tomography showed pe...
Leydig stromal cell tumor is a rare ovarian tumor that belongs to the group of sex-cord stromal tumors. They produce testosterone leading to hyperandrogenism. We present a 41yr old woman with symptoms of virilization and a mass of right adenex via ultra Sonography, and a rise of total and free serum testosterone. An ovarian source of androgen was suspected and a surgery performed. A diagnosis ...
Introduction Brain tumor is due to the growth of abnormal cells in the brain. Brain tumor in its final stage is converted as brain cancer, which leads to death. Survival rate can be increased if the tumor is detected and diagnosed in the initial stages. The detection of the tumor in MR images of the brain can be done using segmentation. These brain tumors exist in different types which make the...
Tuberculoma is one of the Causes of the space occupying lesions in brain. Its manifestations can mimic many diseases such as tumor, vasculitis, and multiple sclerosis.A Patient with brain tuberculoma secondary to epidymitis is reported. His symptoms and signs were verysimilar to the patients with multiple sclerosis. The physicians must keep in mind this disease in the differentialdiagnosis with...
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