Diphyllobothriasis (Fish Tapeworm) in photos

Symptoms and syndromes in photos

Main » Infectious diseases » Infections Acquired through the Gastro-intestinal Tract » Diphyllobothriasis (Fish Tapeworm)

Cross section of head, and segmentents of adult tapeworm.

Photo 1. Cross section of head, and segmentents of adult tapeworm. The fish tapeworm, Diphyllo­bothrium latum, is common around large lakes in Europe, North America and elsewhere. A mature adult may reach 10m in length. The head and mature proglottids have a typical morphology. Mature worms may produce one million eggs daily.

Cross section of head, and segmentents of adult tapeworm too.

Photo 2. Cross section of head, and segmentents of adult tapeworm too.

Procercoids in tail end of Cyclops water flea.

Photo 3. Procercoids in tail end of Cyclops water flea.

From the operculated eggs actively swimming round hexacanth coracidia emerge. After ingestion by water fleas {Cyclops and others) they form procer­coid larvae in the haemocoel of the copepods. (x90)

Plerocercoid in fish.

Photo 4. Plerocercoid in fish. Plerocercoid in fish When the host is ingested by a fish, the larva emerges to form a migrating plerocercoid (sparganum) which comes to lie in the muscle. These develop into adults in the gut of man if the fish is consumed incompletely cooked. (x6)

Macrocytic anaemia in blood film.

Photo 5. Macrocytic anaemia in blood film.The classical clinical feature of the infection is the development of Vitamin B12 deficiency with a resultant macrocytic anaemia. (x 1250)


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Nikolay Kushpela medical-photographs.com 2017