[Elizabeth_Zeibig]_Clinical_Parasitology__A_Practi(z-lib.org)

CHAPTER 10 The Cestodes
261
CASE STUDY 10-2
UNDER THE MICROSCOPE
Renota, a 51-year-old Slavic woman, lived in Romania
with her family on a pig farm. She routinely slaughtered
pigs and cooked pork for family meals. She had a wide
variety of recipes that called for pork. A few days after
preparing one of her famous pork dishes, Renota experienced
diarrhea, abdominal pain, and chronic indigestion.
She went to her family physician and explained her symptoms
to him. The physician, who knew the family well and
was familiar with the family business, immediately suspected
a bacterial or parasitic infection. A stool sample
for routine bacterial culture and O&P study was collected
from Renota and submitted to the local diagnostic
laboratory.
Routine processing procedures were conducted on
the stool sample. Gross examination of the stool revealed
a portion of the infecting worm (Fig. A). An egg,
measuring 36 by 25 um (Fig. B), was seen on the
permanent O&P slide. No intestinal bacterial pathogens
were isolated.
A
1
2
Questions and Issues for Consideration
1. What is the morphologic form of Figure A? (Objective
10-11A)
2. Label the designated structures in Figures A and B.
(Objective 10-10A)
3. Which genus of organism do you suspect? Which
species? (Objective 10-11A)
4. What is the common name for this parasite? (Objective
10-11A)
5. Which of the figures shown here, A or B, is most helpful
for speciating this parasite? Why? (Objective 10-9)
6. Note the differential characteristics of this species
compared with those of its closest relative species.
(Objective 10-9)
4
B
3