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AJNR - American Journal of Neuroradiology

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Intracranial Solitary Fibrous Tumors: Imaging Findings in 6 Consecutive Patients

Y.C. Weon^a,c, E.Y. Kim^a, H.-J. Kim^a, H.S. Byun^a, K. Park^b and J.H. Kim^c

^a Departments of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
^b Neurosurgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
^c Department of Radiology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam-si, Korea

View larger version (45K): [in this window] [in a new window]   Fig 1. A 62-year-old man with headache and memory disturbance for 2 years. A, Noncontrast CT shows a heterogenous hyperattenuated multilobulated tumor in left middle cranial fossa. B, Contrast-enhanced CT, intense but inhomogeneous contrast enhancement is noted. C, T1-weighted axial MR image, a large lobulated mass is seen in the left paraclinoid portion to the tentorium. D, T2-weighted axial MR image reveals 2 different signal intensity portions of the mass, hyposignal intensity and hypersignal intensity to gray matter. E and F, Gadolinium-enhanced T1-weighted axial and coronal MR images show marked and heterogenous enhancement. The tumor is partially implanted on the surface of the tentorium (arrows). Memory disturbance might be because of the mass effect on the limbic system. G, Selective injection of the left internal carotid artery (capillary phase); the tumor is supplied at its periphery by pial branches. H, Selective injection of the left external carotid artery; there is tumor blushing with dysplastic dilation of the tumor vessels. There is no demonstrable significant arteriovenous shunt or early venous drainage.

View larger version (32K): [in this window] [in a new window]   Fig 2. A 52-year-old man with headache and dizziness for 6 months. A, T1-weighted axial MR image, a homogeneous low signal intensity mass is noted in the right cerebellum. B, T2-weighted axial MR image shows 2 different signal intensity portions of the mass: the peripheral hyposignal intensity and the central hypersignal intensity to gray matter. Mass effect on the fourth ventricle is also noted due to peritumoral edema. C, Gadolinium-enhanced T1-weighted axial MR image shows marked homogenous enhancement.