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J Korean Neurosurg Soc. 2013 Feb;53(2):121-4. doi: 10.3340/jkns.2013.53.2.121. Epub 2013 Feb 28.

Granular cell tumor of the intradural extramedullary spinal cord : report of two cases with respect to radiological differential diagnosis.

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Department of Neurosurgery, Spine Center, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea.


Granular cell tumors (GrCTs) of the spinal cord are rare benign tumors with a high rate of local recurrence. Only 6 cases of spinal GrCTs have been reported. GrCT is difficult to distinguish from other benign tumors such as schwannoma using imaging. A radiological "speckled dots" sign may be a useful differentiating feature of GrCT based upon experience with two cases and a review of the literature.


Granular cell tumor; Intradural extramedullary tumor; Magnetic resonance imaging; Schwannoma; Spinal cord

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