USMLE Step 1 First Aid Practice Test Questions and Answers
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Course
USMLE
Institution
USMLE
"wire loop" appearance on Light microscopy- diagnosis?
lupus nephropathy
what is the defect in Job's syndrome?
neutrophil chemotaxis abnormality - due to failure of IFN-gamma production by helper T cells
xanthochromia of CSF - diagnosis?
subarachnoid hemorrhage
4 most common brain tumors in a...
"Orphan Annie" nuclei - diagnosis? papillary carcinoma of the thyroid
painless jaundice - diagnosis? pancreatic cancer (of head)
most common liver disease alcoholic liver disease
"brown tumor" of bone - possible hyperparathyroidism or osteitis fibrosa cystica (von Recklinghausen's disease)
diagnoses? - color is due to hemorrhage in cysts
- what causes the brown color?
renal epithelial casts in urine - diagnosis? acute toxic/viral nephrosis
most common location of brain tumors in infratentorial
kids
cardiomegaly with apical atrophy - Chagas' disease
diagnosis?
most common mets to bone breast, lung, thyroid, testes, prostate, kidney
most common mets to brain lung, breast, skin (melanoma), kidney (renal cell carcinoma), GI
most common mets to liver colon, gastric, pancreatic, breast, lung carcinomas
most common motor neuron disease ALS
Charcot's triad of cholangitis jaundice, RUQ pain, fever
Charcot-Leyden crystals - diagnosis? bronchial asthma - eosinophil membranes
- what are they?
what is the defect in Chediak-Higashi phagocyte deficiency
disease?
what are Cheyne-Stokes respirations, and central apnea in CHF and increased intracranial pressure
in what circumstance do they occur?
Schiller-Duval bodies - diagnosis? yolk sac tumor
what does chronic atrophic gastritis gastric carcinoma
predispose to?
what is Sezary syndrome? cutaneous T-cell lymphoma
DES (diethylstilbesterol- prescribed to clear cell adenocarcinoma of the vagina
pregnant women in 60s) exposure in
utero predisposes to what?
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