Vertigo is caused by each of the following, except

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Vertigo is caused by each of the following, except:

A. otosclerosis B. cerberollopontine angle tumor C. meniere's disease D. acute labyrinthitis

Correct Answer: A

Rationale: Otosclerosis causes hearing loss, not vertigo; the others affect vestibular function.

All of the following are true of CNS toxoplasmosis, except:

A. may be congenital in origin B. is produced by a virus C. calcification may be noted in the cerebral cortices D. may show chorioretinitis

Correct Answer: B

Rationale: Toxoplasmosis is caused by a protozoan (Toxoplasma gondii), not a virus.

bronchogenic carcinoma in the apex may produce:

A. Horner's syndrome B. congestion & edema of the face neck & arms C. vasomotor crises in the arm D. all the above

Correct Answer: A

Rationale: Pancoast tumors (apical bronchogenic carcinoma) cause Horner's syndrome and neuritic pain from nerve invasion.

Features of sarcoidosis include all but one of the following:

A. mild symptoms with massive organ involvement B. Cutaneous allergy C. arthralagia D. Erythema nodosum

Correct Answer: B

Rationale: Cutaneous allergy is not a feature of sarcoidosis; the others are common.

the most common co-existing disease with klebsiella pneumonia is:

A. tuberculosis B. glomerulonephritis C. alcoholism D. pyelonephritis

Correct Answer: C

Rationale: Alcoholism predisposes to severe Klebsiella pneumonia.

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