case_images: PMC4959406_01
case_images: Contrast-enhanced magnetic resonance imaging, T1-weighted fat saturated coronal image shows a large isointense signal intensity mass admixed with hyperintense signal intensity
case_images: JSTCR-7-17-g001.jpg
case_images: PMC4959406_01_JSTCR-7-17-g001.jpg
case_images: F1
case_images: Fine-needle aspiration (FNA) cytology revealed paraganglioma and magnetic resonance imaging (MRI) demonstrated a tumor thought to be a vagal schwannoma with its morphology, and its relation to the surrounding structures [Figure 1].
case_images: Section showing a well-encapsulated benign spindle cell tumor with characteristic Verocay bodies, consistent with schwannoma (H and E, x5)
case_images: JSTCR-7-17-g002.jpg
case_images: PMC4959406_01_JSTCR-7-17-g002.jpg
case_images: F2
case_images: The vascular channels were lined by pleomorphic, endothelial cells showing large ovoid nuclei, heterogenous chromatin, and prominent nucleoli [Figure 2].
case_images: Immunohistochemistry - CD 31 - positive staining of atypical endothelial cells
case_images: JSTCR-7-17-g003.jpg
case_images: PMC4959406_01_JSTCR-7-17-g003.jpg
case_images: F3
case_images: The final histopathological diagnosis was angiosarcoma arising in a benign schwannoma [Figure 3].