Extradural Benign Tumors

Published on 02/04/2015 by admin

Filed under Neurosurgery

Last modified 02/04/2015

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Chapter 1 Extradural Benign Tumors

VERTEBRAL HEMANGIOMA

RADIOLOGY

On plain films, the thickened vertical trabeculae of hemangiomas cause parallel linear densities described as having “jail bar” or “corduroy” appearance, or may show lytic foci with honeycomb trabeculations.3 The classic “honeycombing” or vertically oriented vertebral lucencies separated by thickened trabecular bone are indicative of a vertebral hemangioma (Fig. 1-3).

MR is extremely sensitive in detecting spinal hemangiomas. On both T1- and T2-weighted images, these lesions tend to have increased signal intensity, reflecting the adipose tissue rather than the hemorrhagic component. The hyperintense stroma surrounds foci of very low signal intensity, which represent the thickened vertical trabeculae (Fig. 1-5).3 In cases of hemangiomas that are rich in vascular element, the signal change is high on T2-weighted images (T2WI), low on T1-weighted images (T1WI), and shows homogenous enhancement with contrast (Figs. 1-6 and 1-7).

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