DR Medhat MRCP

B. Trematodes (flat worms)
Schistosomiasis
- Schistosomiasis, or bilharzia, is a parasitic flatworm infection.
- The following types of schistosomiasis are recognised:
• Schistosoma mansoni and Schistosoma intercalatum: intestinal schistosomiasis
• Schistosoma haematobium: urinary schistosomiasis
Schistosoma haematobium :
- This typically presents as a ‘swimmer’s itch’ in patients who have recently
returned from Africa.
هام - Schistosoma haematobium is a risk factor for Squamous cell bladder cancer
• Features
Frequency
Haematuria
Schistosoma haematobium causes haematuria
سؤال Bladder calcification
• Management
Single oral dose of praziquantel
4 اقراص تبلعهم .. بشوية ميه تبلعهم هتروق وهتبقى تمام والتسأل دول كام
والتنزل تانى فى الترعة والتغسل والتتوضا هتروح منك ياسالم وهترجع زى زمان
Cystodes (tape worms) :
- Tape worms are made up of repeated segments called proglottids.
- These are often present in faeces and are useful diagnostically.
Cysticercosis
• Caused by :
1) Taenia solium (from pork).
2) Taenia saginata (from beef).
• Management: Niclosamide
Hydatid disease
Caused by the dog tapeworm
Echinococcus granulosus.
Life-cycle involves dogs ingesting
hydatid cysts from sheep liver.
Often seen in farmers.
May cause liver cysts.
Management :
Albendazole.
48