Cestodes (tapeworms)

Question 1

diphyllobothrium latum

Answer 1

2 intermediate hosts- infection by ingesting inadequately cooked fish with plerocercoid
GI irritation- weakness
B12 def. resulting in pernicious anemia from worms outcompeting for binding sites
scolex with lateral sucking grooves

Question 2

diphyllobothrium latum diagnosis

Answer 2

microexam of stool for eggs/proglottids
operculate eggs
tx: praziquantel

Question 3

taenia solium

Answer 3

Infectious form is cyst found in muscle of pig
abdominal discomfort/irritation of intestinal wall
Cysticerosis occurs from human ingestion of eggs- RARELY AUTO-INFECTION

Question 4

taenia saginata

Answer 4

beef tapeworm- same symptoms as solium without possibility of cystercicosis
tell difference not based on eggs but by proglottids in feces
impt b/c of clinical relevance