case_images: PMC6817676_01
case_images: Brain magnetic resonance imaging (MRI). (A-C) Diffusion-weighted imaging (DWI) and T2 fluid-attenuated inversion recovery (FLAIR) imaging showed high signal, while long signal was shown in T1-weighted imaging and T2-weighted imaging of the posterior limb of the internal capsule. (D,E) Magnetic resonance angiography examination of the intracranial and cervical vascular was normal.
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case_images: PMC6817676_01_fneur-10-01102-g0001.jpg
case_images: F1
case_images: Diffusion-weighted imaging (DWI) revealed focal infarction in the posterior limb of the internal capsule, and cranial and cervical magnetic resonance angiography was normal (Figure 1).
case_images: (A,C,D) Old and new acneiform folliculitis behind the ears (A) and on the face (C) and back (D). (B) Recurrent multiple and painful oral ulcers.
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case_images: F2
case_images: The physical examination revealed that the old and new acneiform folliculitis were alternated on the face and back and behind the ears (Figure 2); also, a scar was shown at the venous puncture site (Figure 3).
case_images: Scar at the venous puncture site.
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case_images: PMC6817676_01_fneur-10-01102-g0003.jpg
case_images: F3
case_images: The physical examination revealed that the old and new acneiform folliculitis were alternated on the face and back and behind the ears (Figure 2); also, a scar was shown at the venous puncture site (Figure 3).
case_images: (A) 3D Cube T1 enhancement shows slightly thickened walls of the terminal portion of the M1 segment of the right middle cerebral artery. (B) 3D-TOF-MRA shows no abnormalities.
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case_images: F4
case_images: High-resolution magnetic resonance imaging (HRMRI) of the brain suggested that some blood vessel walls were slightly thickened, including the terminal portion of the left internal carotid artery, V4 segment of the bilateral vertebral artery, P2 segment of the right posterior cerebral artery (Figure 4), the terminal portion of M1 segment of the right middle cerebral artery (MCA), M2 and M3 segments of bilateral MCA, and A2 segment of the bilateral anterior cerebral artery.
case_images: Extensively perivascular inflammatory cell infiltration with pathological biopsy of the skin lesion.
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case_images: PMC6817676_01_fneur-10-01102-g0005.jpg
case_images: F5
case_images: Pathological biopsy of the skin lesion showed that some regions were infiltrated by extensively perivascular inflammatory cells, suggesting small vessel vasculitis (Figure 5).