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Toxicity and Characteristic Pathology 02

Topic: Pathology

Created on Wednesday, September 24 2008 by jdmiles

Last modified on Wednesday, September 24 2008.

Courtesy of Dr. Mark Cohen

A 34 year old man in previously good health is found at home, comatose and with bright red skin.Â After a few days in the ICU, the patient expires.Â An autopsy is performed. The brain is shown in the image above.
What was the cause of death?

A) Parkinson disease

B) Ruptured cerebral aneurysm

C) Carbon monoxide toxicity

D) Ischemic stroke

E) Ethylene glycol

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This question was created on September 24, 2008 by jdmiles.
This question was last modified on September 24, 2008.

ANSWERS AND EXPLANATIONS

A) Parkinson disease

This answer is incorrect.

The image shows lesions in the globus pallidus bilaterally. This is not the typical lesion seen in Parkinson disease, nor is this young patient's history typical of Parkinson disease. (See References)


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B) Ruptured cerebral aneurysm

This answer is incorrect.

The image shows bilateral lesions in the globus pallidus. This is characteristic of carbon monoxide poisoning. Bilateral pallidal aneurysms would be unlikely. (See References)


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C) Carbon monoxide toxicity

This answer is correct.

Bilateral globus pallidus lesions are a common finding in carbon monoxide poisoning. (See References)


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D) Ischemic stroke

This answer is incorrect.

The image shows bilateral lesions in the globus pallidus. This is characteristic of carbon monoxide poisoning, and would be unusual for ischemic stroke. Further, ischemic stroke would be unusual in this young patient. (See References)


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E) Ethylene glycol

This answer is incorrect.

This image shows lesions in the globus pallidus bilaterally. Such lesions have been reported after acute ethylene glycol intoxication. However, the patient's presentation (e.g., red skin) are suggestive of another etiology. (See References)


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References:

1. Prayson, R.A., and Goldblum, J.R. (Eds.) (2005). Neuropathology. Elsevier Churchill Livingstone, Philadelphia. (ISBN:0443066582)	Advertising:
2. Lapresle, J., and Fardeau, M. (1967). "The central nervous system and carbon monoxide poisoning. II. Anatomical study of brain lesions following intoxication with carbon monixide (22 cases)." Prog Brain Res, 24 31-74. (PMID:6075035)
3. Weydt, P. (2000). "Biomedical centre memorial to victims of Nazi research." Nature, 403(6772) 816. (PMID:10733384)
4. Caparros-Lefebvre, D., Policard, J., Sengler, C., Benabdallah, E., Colombani, S., and Rigal, M. (2005). "Bipallidal haemorrhage after ethylene glycol intoxication." Neuroradiology, 47(2) 105-7. (PMID:15714272)


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pathology
Toxicity and Characteristic Pathology 02
Question ID: 092408153
Question written by J. Douglas Miles, (C) 2006-2009, all rights reserved.
Created: 09/24/2008
Modified: 09/24/2008
Estimated Permutations: 600