XI - Cestodes, Nematodes, Trematodes Flashcards
Taenia (+) rostellum, neurocysticercosis
Taenia solium
Taenia (-) rostellum 15-25 gravid proglottids, intestinal obstruction
Taenia saginata
Taenia, transmission
Undercooked meat
Taenia, infective stage
eggs, cystecrci
Taenia, diagnostic stage
Gravid proglottids
DOC for Taenia
Praziquantel
Megaloblastic anemia due to Vit B12 deficiency, parasite?
Diphyllobothrium latum
Diphyllobothrium, transmission
Undercooked fish
Diphyllobothrium, infective stage
Plerocercoid larave
Diphyllobothrium, diagnostic stage
Egg
DOC in Diphyllobothrium
Praziquantel
Cysts are SOL, rupture of cysts can cause anaphylaxis
Echinococcus granulosus
DOC in Echinococcus
Albendazole
Oriental blood fluke, reside in portal veins, causing PRE-sinusoidal portal hypertension
Schistosoma japonicum
Intermediate host in Schistosomiasis
snail (Oncomelania hupensis quadrasi)
Schistosomiasis, diagnostic stage
Eggs in feces, urine
Schistosomiasis, diagnostic technique
Kato-Katz
DOC in Schistosomiasis
Praziquantel
Lung fluke, mimics TB
Paragonimus westermani
Intermediate host in Paragonimus
Snail (Antemelania), crab (Sundathelphusa)
Bloody sputum, similar to TB, ring-shadow opacity on CXR
Paragonimus westermani
DOC in Paragonimiasis
Praziquantel
Diagnostic of choice in Paragonimiasis
3% NaOH
Asian liver fluke, may cause cholangiocarcinoma
Clonorchid sinensis
Most common and largest intestinal nematode
Ascaris lumbricoides
Loeffler’s syndrome (hypersensitivity pneumonitis)
Ascaris lumbricoides
DOC in Ascaris
Albendazole
Microcytic anemia due to blood loss,buccal spears in filariform larvae
Necator, Ancylostoma
Barrel-shaped eggs / Chinese lantern
Trichuris trichiura
Rectal prolapse due to increased perestalsis
Trichuris trichiura
DOC in Trichuris
Mebendazole
Whipworm
Trichuris trichiura
Pinworm, seatworm
Enterobius vermicularis
Most common soil-transmitted helminth in developed countries, cosmopolitan worm
Enterobius vermicularis
Diagnostic of choice in Enterobius
Scotch tape test
DOC in Enterobius
Pyantel pamoate
Stryongyloides, diagnostic stage
Rhabditiform larvae
Autoinfection
Strongyloides, Enterobius, Paragonimus, C. parvum, Capillaria
Diagnostic of choice in Strongyloides
Harada-Mori
Opportunistic intestinal protozoa, thick-walled oocyst, in immunocompromised
Cryposporidium parvum
DOC in Cryptosporidium
Nitazoxanide
Ping pong transmission, only as a trophozoite
Trichomonas vaginalis
Green vaginal discharge, strawberry cervix
Trichomonas vaginalis
DOC in Strongyloides
Ivermectin
Facultative parasite, serpiginous track
Strongyloides
Only nematode involving migratory birds in life cycle
Capillaria philippinensis
Peanut-shaped eggs, flattened bipolar plugs
Capillaria philippinensis
Autoinfection, severe malabsorption, borborygmus, protein-losing enteropathy
Capillaria philippinensis
DOC in Capillaria
Albendazole
Most debilitating nematode infection
Wuchereria, Brugia
Smooth curved, scrotal lymphatics, hydrocoele, more severe, widespread epidemiology, Bancroftian
Wuchereria
Kinky, with terminal nuclei, only in SEA, limb lymphatic, elephantiasis, Malayan
Brugia
Wuchereria, Brugia, infective stage
3rd stage larvae
Specimen collection in Wuchereria, Brugia
8pm-4am
Meyers-Kouvenaar bodies
Wuchereria, Brugia
DOC in Wuchereria, Brugia
Diethylcarbamazine
DOC in Trichinella spiralis
Thiabendazole
Hypersensitivity reaction due to lysis of worms
Mazzotti reaction
MCC of parasitic meningitis
Angiostrongylus cantonensis