Abstract
Purpose: The objective of this study was to differentiate the magnetic resonance (MR) imaging appearance of benign peripheral nerve sheath tumors (PNSTs) from that of malignant PNSTs. Materials and methods: Twenty-six patients who underwent MR imaging and had a histologic diagnosis of benign (schwannoma, n=16; neurofibroma, n=1) or malignant (n=9) PNST were retrospectively reviewed. The size, location, shape, margin, and signal intensities of the tumors on precontrast and gadolinium-enhanced MR imaging were analyzed. In each patient, the presence or absence of split fat, target, and fascicular signs was determined. Results: The mean size of the benign PNSTs (3.4 cm, S.D.=2.5 cm) was significantly smaller than that of the malignant tumors (8.2 cm, S.D.=3.1 cm) (P1-weighted, T2-weighted, and contrast-enhanced MR images. The split fat and target signs were present more frequently in the benign PNSTs than in the malignant PNSTs (P
Original language | English |
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Pages (from-to) | 121-127 |
Number of pages | 7 |
Journal | Clinical Imaging |
Volume | 32 |
Issue number | 2 |
DOIs | |
Publication status | Published - Mar 2008 |
Keywords
- Fascicular sign
- Magnetic resonance (MR) imaging
- Peripheral nerve sheath tumor
- Split fat sign
- Target sign
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging