Abnormal pons morphology Punctate pontine perivascular enhancement 2024-07-20T13:25:59Z The lesions may extend into adjacent CNS structures, caudally to the medulla oblongata or the cervicothoracal spinal cord, rostrally to the midbrain, and even involve supratentorial regions such as the thalami, capsula interna, basal ganglia, corpus callosum and cerebral white matter. See Figure 1 of PMID:24028073. Multiple punctate (speckled, patchy spot-like) and/or curvilinear areas of gadolinium enhancement distributed around blood vessels in the pons.