MR imaging of paragangliomas
نویسندگان
چکیده
منابع مشابه
MR imaging of paragangliomas.
MR imaging of 15 paragangliomas in 10 patients was compared with CT of 13 of the lesions in eight patients. All lesions were confirmed with angiography. All lesions were detected by MR and CT with the exception of one small glomus tympanicum tumor that was seen only in retrospect with MR. CT better demonstrated subtle osseous changes of the skull base and the relation of the tumor to the middle...
متن کاملMR imaging features of benign retroperitoneal paragangliomas and schwannomas
BACKGROUND To determine whether MRI feature analysis can differentiate benign retroperitoneal extra-adrenal paragangliomas and schwannomas. METHODS The MRI features of 50 patients with confirmed benign retroperitoneal extra-adrenal paragangliomas and schwannomas were retrospectively reviewed by two radiologists blinded to the histopathologic diagnosis. These features were compared between two...
متن کاملCT and MR Imaging Findings of Pancreatic Paragangliomas
Previous studies on pancreatic paraganglioma, a rare neoplasm, have primarily reported its ultrasound and routine and contrast-enhanced computed tomography (CT) findings. To our knowledge, we are the first to report the contrast-enhanced magnetic resonance imaging (MRI) and diffusion-weighted imaging (DWI) sequence findings of pancreatic paraganglioma. A male patient, ages 41 years, was admitte...
متن کاملModern nuclear imaging for paragangliomas: beyond SPECT.
Paragangliomas are rare neuroendocrine tumors that may arise anywhere along the paraganglial system, with a high frequency of hereditary forms or multifocal disease. Most often, paragangliomas are benign and progress slowly, but metastases may occur in about 10% of patients. In this respect, nuclear imaging in combination with anatomic imaging may be required to fully delineate the extent of th...
متن کاملParagangliomas of the jugular bulb and carotid body: MR imaging with short sequences and Gd-DTPA enhancement.
Twenty-six patients with glomus jugulare (16), glomus tympanicum (three), or carotid glomus (seven) tumors were examined with contrast-enhanced CT scans and MR scans without and with Gd-DTPA. MR and CT scans had similar sensitivities, but the enhanced MR scans were diagnostically more specific than either CT or nonenhanced MR. Dynamic MR scanning permitted measurement of the degree of Gd-DTPA e...
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ژورنال
عنوان ژورنال: American Journal of Roentgenology
سال: 1987
ISSN: 0361-803X,1546-3141
DOI: 10.2214/ajr.148.1.201