PMC5124665_01
MRI of the head and neck: axial and coronal views of mass. The lesion with 2,8*2,3 cm size on the front of musculus sternocleidomastoideus and internal carotid artery.
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The lesion which pushes parotid gland towards the front was starting from the inferior part of the posterior digastric muscle and progressing up to the C4 level (Figure 1).
(a) Intraoperative view of the neurogenic mass. (b) The lesion with 4 cm size after the total excision. (c) Upper part of the nerve was held by the clamp.
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The total mass was extracted (Figure 2).
Photomicrographs showing more than 50% of tumor tissue in this case composed of Schwannian stroma and neuropil-like islands, differentiating neuroblasts, and immature and dysplastic ganglion cells. H&E (a and b), original magnification (a) 10x and (b) 40x.
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In addition, differentiation neuroblasts and immature and dysplastic ganglion cells were observed under microscopic examination (Figure 3).