Parasitology Flashcards
Maximun time between collection and examination of formed stool
24 hours
Parasitic stage recovered in formed stool
Cysts
Parasitic stage recovered in soft / semi solid stool
Cysts and trophozoites
Parasitic stage recovered in watery / liquid / loose stool
Trophozoites
Giant intestinal roundworm
Ascaris lumbricoides
Pinworm
Enterobius vermicularis
Whipworm
Trichuris trichiuria
Oriental liver fluke, Chinese liver fluke
Clonorchis sinensis
Profile of a man
Schistosoma mansoni
Beef tapeworm
Taenia saginata
Pork tapeworm
Taenia solium
“3rd Taenia”
Taenia asiatica
Dwarf tapeworm
Hymenolepis nana
Double-pored tapeworm
Dipylidium caninum
Hydatid worm
Echinococcus granulosus
Barrel / football / Japanese lantern with bipolar plugs egg
Trichuris trichiuria
“D-shaped” / flattened on one side egg
Enterobius vermicularis
Similar to hookworm eggs, but has pointed appearance and larger eggs
Trichostrongylus spp.
Thick striated wall, hexacanth embryo, resembles POLLEN GRAINS egg
Taenia spp.
Has bipolar thickenings and POLAR FILAMENTS egg
Hymenolepis nana
Has bipolar thickenings but NO HAIR-LIKE FILAMENTS egg
Hyemenolepis diminuta
Has OPERCULIM and abopercular protruberance similar to P. westermani egg
Diphyllobothrium latum
Small LATERAL knob/spine egg
Schistosoma japonicum
Has a TERMINAL SPINE; seen in URINE egg
Schistosoma haematobium
Longer than S. haematobium, acid-fast, seen in FECES egg
Schistosoma intercalatum
Has LARGE LATERAL spine shaped like rose thorns egg
Schistosoma mansoni
“Old fashion electric bulb”, “CHINESE VASE”, operculated with comma-shaped abopercular knob egg
Clonorchis sinensis
Has a thick cuticle and large uterus with rhabditoid larvae
Adult Dracunculus medinensis
Female has “BARBER’S POLE PATTERN”
Adult Angiostrongylus cantonensis
7-15 fingerlike branches proglottids / strobila
Taenia solium
15-20 tree-like branches proglottids / strobila, released following ALCOHOL INGESTION
Taenia saginata
Rice grain proglottids / strobila
Dipylidium caninum
Rosette-like coiled uterus of proglottids / strobila
Diphyllobothrium latum
Cestode with cephalic cone
Adult Fasciola hepatica