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  • Title: Thoracolumbar spinal angiolipoma demonstrating high signal on STIR imaging: a case report and review of the literature.
    Author: Reyes D, Candocia FJ.
    Journal: Spine J; 2013 Nov; 13(11):e1-5. PubMed ID: 24071036.
    Abstract:
    BACKGROUND: Angiolipomas are rare benign tumors, accounting for 0.14% to 1.2% of all tumors of the spinal axis with vascular and fatty histological features. Spinal angiolipoma (SAL) is most commonly found in the thoracic region and has high signal on contrast enhanced fat-saturated T1-weighted imaging. Although the international literature is extensive, there are few cases reported in United States. OBJECTIVE: To present a case of SAL located in the thoracolumbar region without high signal on contrast enhanced fat-saturated T1-weighted imaging and to review previously reported cases. STUDY DESIGN/METHODS: Case report and review the literature. RESULTS: Magnetic resonance imaging obtained in a 68-year-old man with a long history of lumbago showed a heterogeneous mass (T10-L1) hyperintense on T1-weighted imaging but not enhancing on suppression fat sequences, suggesting epidural hematoma. Surgical excision of the lesion was performed, and SAL was diagnosed and confirmed by pathology. The patient became asymptomatic. CONCLUSIONS: The predominance of either vascular or fatty components inside the tumor might alter the expected results on magnetic resonance imaging with suppression fat sequences.
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