PMC5025953_01
Preoperative contrast enhanced magnetic resonance imaging
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F1
Both lesions were T1 hyperintense enhancing lesions with a mixed iso and hypointense signal on T2 [Figures 1 and 2].
Preoperative T2 magnetic resonance imaging
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F2
Both lesions were T1 hyperintense enhancing lesions with a mixed iso and hypointense signal on T2 [Figures 1 and 2].
Preoperative angiogram
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F3
A cerebral angiogram confirmed obstruction of the right sigmoid sinus and jugular vein at the level of the jugular foramen with recanalization distally [Figure 3].
Postoperative contrast enhanced magnetic resonance imaging
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F4
The patient was treated with stereotactic radiosurgery at 6 months (22 Gray in three fractions) and has been stable on MRI imaging for 12 months [Figure 4].
Pathology slides, (a, b) from the scalp lesion and (c, d) from the cerebellopontine angle lesion
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F5
Marked intracellular and extracellular melanin deposition was noted [Figure 5].