Brain magnetic resonance imaging of a patient with rhombencephalitis due to Listeria monocytogenes

(A) Axial fluid-attenuated inversion recovery image shows a homogenous hyperintense area in the central portion of the midbrain. The anterior part of the peduncles and the collicular area are spared.
(B) Axial T1-weighted image following contrast administration shows a nodular area of enhancement with poorly defined margins within the lesion. Note the small anterior satellite nodule (arrow).