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FIG 3. A 19-year-old female patient who complained of retro-orbital pain.
A, Coronal section at the cerebral peduncle. Round and ovoid PV spaces are visible at the level of the MDJ. The largest size is graded 1.
B, Coronal section two sections posterior to Figure 2A. Small PV spaces are visible at the PMJ and at the level of tentorial margin. The largest one is grade 0.
C, Axial section at the lower midbrain. Ovoid and linear PV spaces are visible between the cerebral peduncle and substantia nigra and in the cerebral peduncle.
D, Axial section, two sections rostral to Figure 3C. Small PV spaces are visible behind the cerebral peduncle.
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