Intestinal Taeniasis and cysticercosis

Presentation on theme: "Intestinal Taeniasis and cysticercosis"— Presentation transcript:

1 Intestinal Taeniasis and cysticercosis

2 肠绦虫病 Intestinal Taeniasis

3 病原学 猪肉绦虫 Taenia solium 牛肉绦虫 Taenia saginata 短膜壳绦虫 Hymenolepis nana
长膜壳绦虫 Hymenolepis diminuta 阔节裂头绦虫 Diphyllobothrium latum 犬复孔绦虫 Dipylidium caninum

4 Morphology Adult tapeworms have three major parts: The scolex The neck
The proglottids

5 Morphology of proglottids
tegument microvilli Two muscle layers The nervous system The excretory system There is no digestive system. Male and female gonads

6 Characteristics of T.saginata and T. solium
T. saginata T. Solium Scolex big small square ball 4 suckers suckers no hooks rostellum with hooks Segment <1000 Length m m Egg radially striate radially striate Mature segment Ovary large lobes small and 2 large Gravid segment Uterine branch

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8 Life cycle

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10 Epidemiology 1.传染源：病人 2.传播途径：食入 3人群易感性：普遍 4.流行情况：

11 Pathogenesis obstruction tissue invasion

12 Clinical Picture subclinical The finding of proglottids
fullness, diarrhea, constipation, appetite.

13 诊断 1 流行病学史 2 临床表现 3 实验室检查 卵Eggs 节片graved proglottid 头节scolex

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15 治疗 1.albendazole 14-15 mg/kg /d 2.Praziquantel 15-20mg/kg once

16 Children and pigs in the village of Huancyao in Peru, an area of high cysticercosis transmission