Cerebellopontine angle tumor

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see Cerebellopontine angle lesion classification

The 62-year-old woman, a former smoker for 2 years, has a history of two cesarean sections, underwent polypectomy by hysteroscopy, and had a curettage procedure. She also has a medical history of Type 2 Diabetes Mellitus, hypothyroidism, hypertension (HTA), and dyslipidemia (DLP).

Right-sided sudden hearing loss.

Space-occupying lesion in the right cerebellopontine angle, extending to the ipsilateral internal auditory canal, measuring approximately 22 x 24 mm in maximum diameters on the axial plane (oblique axes) and 17 mm in the long axis. The lesion diffusely enhances with intravenous contrast, presenting a dural tail towards the anterior region, consistent with cerebellopontine angle meningioma vs. vestibular schwannoma. It produces a discreet impression on the adjacent cerebellar parenchyma without edema. The anterosuperior edge of the lesion is immediately adjacent to the cisternal course of the right V cranial nerve, without clear compression.

The acoustico-facial bundle and cistern of the left cerebellopontine angle are without alterations. The fourth ventricle and cerebellar tonsils are normal. No signal changes are observed in the brainstem or cerebellum.