usmleasr
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A 24-year-old AIDS patient develops chronic abdominal pain,
low-grade fever, diarrhea, and malabsorption. Oocysts are demonstrated
in the stool. Which of the following organisms is most likely to be
the cause of the patient's diarrhea?
A. Diphyllobothrium latum
B. Entamoeba histolytica
C. Giardia lamblia
D. Isospora belli
E. Microsporidia
explain the ans please :roll:
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| asmi
Forum Hero
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D ..isosopra belli is most often associated with HIV+ pt complaining of watery diarrohea and abd. cramps .
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| usmleasr
Forum Guru
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u r correct...asmi..i was wondering why not giardia....how did u reach the ans..is it by symptomatology? or oocysts?explain me please :oops:
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| asmi
Forum Hero
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http://www.cdfound.to.it/HTML/iso1.htm
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| peekay
Forum Guru
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CLUE IS OOCYST. GIARDIA HAVE TOPHOZITE IN FECES
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| ceci
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I agree. Giardia lambilia is the cause. In fact, it gives malabsortive syndrome and also ooquist . You can also see the protozoarian in biopsy when upper endoscopy and biopsy are performed.
Isopora belli, the watery diarrhea is present and not malabsortive synd and you need see the bugs in fresh material fecal smear using special dye.
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| usmleasr
Forum Guru
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yes..i agree with ceci.. in that case..is it in AIDS means should i choose...isospora??
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| Colombia
Forum Guru
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I think that Isospora belli is the answer because:
:arrow: AIDS patient
:arrow: Isospora produces oocyst whereas Giardia cysts.
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| asmi
Forum Hero
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:arrow: in AID's pt with watery diarrohea+ abd cramp + oocytes in stool.........always think about isospora belli.
:idea: if hint like acid fast oocysts is given....always think of cryptosporidum.It can cause chronic diarrohea in AID's pts .
:idea: if they mention fatty diarrohea or foul smelling diarrohea in a malabsorption pt.....think of giardia .
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| Colombia
Forum Guru
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Excellent asmi :icon_queen:
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