Ganong's Review of Medical Physiology, 23rd Edition

180 SECTION III Central & Peripheral Neurophysiology
4. A 50-year-old woman undergoes a neurological exam that indicates
loss of pain and temperature sensitivity, vibratory sense,
and proprioception in both legs. These symptoms could be
explained by
A) a tumor on the medial lemniscal pathway in the sacral spinal
cord.
B) a peripheral neuropathy.
C) a large tumor in the sacral dorsal horn.
D) a large tumor affecting the posterior paracentral gyri.
E) a large tumor in the ventral posterolateral and posteromedial
thalamic nuclei.
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