LSB500 Review Tutorial Quiz
I
Question 1.
This
specimen is a tissue imprint from a liver biopsy performed on a 35 year old
female patient recently migrated from India. She suffers from recurrent fever
and feelings of lethargy. Small pale patches of skin are apparent on parts of
her body. Blood smears have revealed no evidence of malaria.
1) Identify
the parasite indicated on the field (genus and species)
(2 marks)
2)
Name the stage of the parasite shown on the field
(1 mark)
3) What is
the name of the clinical disease caused by this infection ?
(1
mark)
4) What is the vector of this parasite (genus only)
(1
mark)
Question 2.
The
specimen provided is a thin film of blood taken from a 75 year-old war veteran
who served time during the second world war in New Guinea and Borneo. He now
lives in a small town just west of Mackay, where he enjoys a reasonably
independent life. He reports having periods of feeling "a bit crook every now
and then" (fevers and chills) and remembers being treated for malaria when he
returned home from service, but was not followed up for treatment. He normally
does not seek medical advice during these ill periods. He has not left Australia
since the war.
1) Identify the parasite indicated (genus only)
(1
mark)
2) Identify the stage of the parasite shown on the field
(1
mark)
3) What is the definitive host of this parasite
(1 mark)
4)
Is it likely that he contracted the infection in Australia ?
Discuss.
(2 marks)
Question 3.
The
specimen provided is a faecal sample from a community health nurse, stricken
with acute diarrhoea. The patient had recently returned from a trip to a station
in far north Queensland. He described conditions at the station as "squalid" and
made a report to his supervisors, detailing the lack of proper sanitation.
1) Identify the parasite indicated (genus, species and stage)
(3
marks)
2) Describe how this parasite is transmitted
(1 mark)
3)
Detail which criteria you used to make your diagnosis
(1 mark)
Question 4.
The
specimen provided is of a bronchial aspirate taken from a patient suffering from
a debilitating pneumonia. The patient was diagnosed as HIV positive some three
years ago and is starting to show signs of AIDS related syndromes, such as
Kaposi's sarcoma, and a chronic infection of Cryptosporidium.
1) Identify
the parasite indicated (genus, species and stage)
(3 marks)
2) Could
the appearance of this organism be related to the patient's HIV status
?
(1 marks)
3) Does this parasite pose a risk to health workers
handling the specimen ?
(1 mark)
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II
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