نتایج جستجو برای: diagnosis of brain tumor
تعداد نتایج: 21291769 فیلتر نتایج به سال:
Today, high mortality rates due to brain tumors require early diagnosis in the early stages to treat and reduce mortality. Therefore, the use of automatic methods will be very useful for accurate examination of tumors. In recent years, the use of FMRI images has been considered for clarity and high quality for the diagnosis of tumor and the exact location of the tumor. In this study, a complete...
Glioblastoma multiforme (GBM) is a malignant adult brain tumor that visualized as an enhancing lesion on post-contrast magnetic resonance imaging (MRI). In this study, we present rare case of non-enhancing GBM required histopathological examination for definitive diagnosis. Our findings emphasize the critical role biopsy in diagnosis and treatment GBMs, particularly cases lesions MRI.
major salivary gland tumors are uncommon and the exact nature of these tumors is not obvious. this study was carried out to compare the histological results of intraoperative frozen sections against those of permanent reports for major salivary glands masses. one hundred thirty-nine patients with major salivary gland masses who were candidates for surgery underwent an intraoperative frozen sect...
ancient schwannomas rarely found in the central nervous system and ancient change in an intracranial schwannoma (intracranial portion of the trigeminal nerve) is extremely rare. a seventy-year man presented with headache of 3 months duration and one episode of generalized tonic-clonic seizures. imaging findings were suggestive of left temporal high grade lesion. during surgery there was well ca...
background: nodular hidradenoma or clear cell hidradenoma is a rare adnexal tumor arising from the eccrine glands. case report: a 60-year old female presented to the surgical out-patient clinic with complaints of breast lump of one year duration. fine needle aspirate (fna) of the lump yielded fluidly aspirate mixed with hemorrhage. on giemsa-stained smears, a possibility of benign cystic lesion...
Radiation induced sarcoma is a rare but recognized complication of radiotherapy and is associated with poor prognosis, frequently occurs 5 years after completion of treatment. We report radiation-induced sarcoma in a 42 years old male, involving the left parietooccipital scalp region following treatment of brain tumor with craniotomy and post-operative radiation with 60Co machine. Diagnosis of ...
purpose: to report a case of spinal cord tumor with visual symptoms and papilledema due to increased intracranial pressure. patient and findings: a 24-year-old woman was referred because of recent blurred vision in both eyes. visual acuity was 20/25 and 20/20 in the right and left eyes, respectively. fundoscopy revealed bilateral papilledema. other ophthalmic examinations were normal. visual fi...
Background: Contrary to adults, primary and metastatic involvement of CNS is a rare condition in pediatric malignant tumors. With CNS involvement the prognosis will be poor and practical treatment modalities will decline so new approaches must be reviewed. The aim of this study was to find out the incidence of CNS involvement in different childhood malignancies. Also the survival analysis w...
Primary and secondary malignant central nervous system (CNS) tumors are devastating invasive tumors able to give rise to many kinds of differentiated tumor cells. Glioblastoma multiform (GBM), is the most malignant brain tumor, in which its growth and persistence depend on cancer stem cells with enhanced DNA damage repair program that also induces recurrence and resists current chemo- and radi...
Abstract Glioma is the most prevalent type of primary brain tumor, and glioblastoma multiforme (GBM) highest deadly central nervous system (CNS) affecting a significant number patients each year, with median overall survival approximately 14.6 months after diagnosis. Despite intensive treatment, nearly all GBM experience recurrence, 5-year rate about 5%. The protective BBB high tumor heterogene...
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