Parasitosis
制作：张绘宇
Amoebiasis
? Amoebiasis is a disease of
the large intestine resulting from
infection with the protozoan
entamoeba histolytica.
一,Intestinal
amoebiasis
Etiological factor and
pathogenesis
Pathological changes
and clinical pathology
1 Acute pathological
changes
Naked eye
Microscop
2 Chronicity
pathological changes
Complication
① Intestinal Bleed
② Intestinal perforation
③ Intestinal obstruction
④ Ameba anal fistula
二,Extraintestinal
amoebiasis
1 Amoebic liver
abscess
2
Amoebic
lung
abscess
?3 Amoebic brain abscess
Schistosomiasis
（一） Etiological factor
?Schisoma
Pathological changes
?1 cercaria
?2 schistosomulum
?3 imago
?4 egg
Acute
Chronicity
1
Colon
2 Liver
?3 Spleen
?4 Lung
?5 Brain
?6 Kidney