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