MRI imaging reveals a T2 heterogeneously hyperintense lesion with internal areas of low signal areas giving rise to a fascicular pattern typical for nerve sheath tumors. The lesion has a T2 hypointense capsule. The ipsilateral submandibular gland is compressed and displaced posterolaterally. The postcontrast study shows moderate enhancement, with no restriction on DWI.

On US correlation, the lesion appears heterogeneously hypoechoic with moderate internal vascularity on the color Doppler study. US demonstrates an entry of a nerve into the lesion, which is probably the hypoglossal nerve.

On biopsy, it was confirmed to be a schwannoma.