Lyme disease other imaging findings

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Single photon emission computed tomography is one of the major other imaging modalities of Lyme disease. In Lyme patients, cerebral hypoperfusion of frontal subcortical and cortical structures has been found.

Other Imaging Findings

Single Photon Emission Computed Tomography (SPECT)

  • Global cerebral hypoperfusion deficits on SPECT in the presence of characteristic neuropsychiatric features of Lyme disease should raise suspicion of Lyme encephalopathy among patients who inhabit or have traveled to endemic areas, regardless of patient recall of a tick bite.
  • Late stage Lyme disease can occur many years after initial infection.
  • The average time from symptom onset to diagnosis in these patients is about 4 years.
  • Seronegative disease can occur, and because CSF testing is often normal, Lyme encephalopathy often becomes a diagnosis of exclusion.
  • Aberrant SPECT patterns are caused by cerebral vasculitis. Brain biopsy is not commonly performed for these cases, as opposed to other types of cerebral vasculitis.

References

  1. Sumiya H, Kobayashi K, Mizukoshi C; et al. (1997). "Brain perfusion SPECT in Lyme neuroborreliosis". J. Nucl. Med. 38 (7): 1120–2. PMID 9225802.
  2. Logigian EL, Johnson KA, Kijewski MF; et al. (1997). "Reversible cerebral hypoperfusion in Lyme encephalopathy". Neurology. 49 (6): 1661–70. PMID 9409364.
  3. Fallon BA, Das S, Plutchok JJ, Tager F, Liegner K, Van Heertum R (1997). "Functional brain imaging and neuropsychological testing in Lyme disease". Clin. Infect. Dis. 25 Suppl 1: S57–63. PMID 9233666.


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