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Clin Imaging. 2013 Jan-Feb;37(1):143-6. doi: 10.1016/j.clinimag.2012.04.006. Epub 2012 Jun 8.

Organizing hematoma mimicking brain tumor.

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The Russell H. Morgan Department of Radiology, The Johns Hopkins Medical Institutions, Phipps B-100F, Baltimore, MD 21287, USA.


A 64-year-old man was referred to our hospital with progressive loss of function in his right upper and lower extremities. Unenhanced computed tomographic showed a high-density nodular lesion in the left basal ganglion with surrounding hypoattenuation. Brain magnetic resonance imaging demonstrated a predominantly cystic mass with multiple internal septa and an eccentric solid component showing enhancement. Histological examination revealed organizing blood clot and piloid gliosis. This unusual appearance of a mass-like organizing blood clot should be considered in the differential diagnosis when an encapsulated cystic mass with nodular component following the signal characteristics of old blood on MRI is encountered.

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