© 2002 by Society
© 2002 by the Society forNeuro-Oncology
Paraneoplastic chorea: Case study with autopsy confirmation
Neuro-Oncology Department (I.W.T.-L., P.G.,M.D.G.), Sections of Neuropathology andImmunocytochemistry (G.N.F.), the University of Texas M.D. Anderson CancerCenter, Houston, TX 77030; and AnatomiaPatológica, Universitat de Barcelona, Barcelona, Spain(T.R.)
1 Address correspondence and reprint requests to Morris D. Groves, Department ofNeuro-Oncology, the University of Texas M.D. Anderson Cancer Center, Houston,TX 77030.
| Abstract |
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A 67-year-old man presented with a 7-month history of insidiouslyprogressive chorea, ataxia, and vertigo. Neurologic examination revealeddeficits referable to the basal nuclei, cerebellar vermis, and vestibularnuclei. Small-cell lung cancer was diagnosed by fine-needle biopsy of aparahilar mass. After chemotherapy, the patient's chorea worsened. Anti-Huantibodies were present in serum and cerebrospinal fluid. Microscopicexamination of the brain at autopsy revealed diffuse perivascular lymphocyticinfiltrates, microglial activation, and neuronophagia throughout the neuraxis,including the brainstem, cerebellum, lenticular nuclei, striatum, and cerebralcortex. Prominent loss of Purkinje cells was seen in the cerebellar vermis andhemispheres to a lesser degree. Chorea is extremely rare as a paraneoplasticmanifestation of cancer. The florid presentation and the positive findingscontrasted with an unremarkable MRI of the brain. This case illustrates thepreeminence of symptoms and signs over negative MRI findings in paraneoplasticencephalitis.
Received December 4, 2001; Accepted March 12, 2002
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