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6571 Microbiology

False about Barrett’s oesophagus is

AIn sho - segment Barrett's there is less than 3 cm of columnar epithelium
BBarrett's ulcer occurs just above the squamocolumnar junction
CIf a peptic stricture occurs in Barrett's oesophagus it always occurs at the new squamocolumnar junction
DIt is a premalignant condition
Microbiology
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6579 Microbiology

A 7-year-old girl with sickle cell anemia was brought to her physician by her parents who reported that she seemed to be extremely fatigued and pale-looking. They stated that several of her classmates had recently had rashes and bright red cheeks. On examination, the doctor did not see a rash, but observed that her conjunctiva, gums, and nail beds were pale and that she had tachycardia. A CBC revealed that her hemoglobin level had fallen by 2 g/dL from her last result 3 months ago; her reticulocyte count was 0.05%. From which of the following is this child suffering?

AAplastic crisis from parvovirus B19 infection
BPericarditis caused by Coxsackievirus B
CGastroenteritis with bleeding caused by Norovirus
DExacerbated anemia from Colti virus infection
Microbiology
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