Lancet Fluke In Humans: Symptoms And Treatment

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Lancet Fluke In Humans: Symptoms And Treatment
Lancet Fluke In Humans: Symptoms And Treatment

Video: Lancet Fluke In Humans: Symptoms And Treatment

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Video: Schistosomiasis | Bilharziasis | Causes, Symptoms and Treatment 2023, February

Once in the human body, the lanceolate fluke causes the disease dicroceliosis. Helminths begin to cause harm with severe intoxication, which occurs due to the vital activity of parasites. Some worms cause a person to become infected with serious diseases.

The lanceolate fluke is a parasitic worm. It is also known as the lanceolate fluke. The flatworm belongs to the class of trematodes and to the genus Dicrocoelium lanceatum in Latin.

The causative agent of dicroceliosis is localized outside the intestine. Its habitat can be both the liver and the bile ducts.

During the life cycle, the helminth changes several hosts. It is distinguished by its small size. The body of the parasite has a flat structure, no more than one centimeter long and about 3 millimeters wide.

The structure of the lanceolate fluke or fluke
The structure of the lanceolate fluke or fluke

Representatives of an adult lanceolate fluke are usually called marita. It is characterized by the presence of two suckers, one of which is abdominal, the other is oral. Thanks to these devices, the parasite can attach to the mucous membranes.

The work of the digestive system is provided by the pharynx, esophagus and bifurcated intestine. The opening of the mouth is responsible for the removal of waste.

The lanceolate fluke has a hermaphroditic organism.

The norm for a helminth is to produce a huge number of eggs, often up to a million per week. Eggs, being in the external environment, remain viable, being in the temperature range from -50 to +50 degrees Celsius.


  1. Life cycle and routes of infection
  2. Signs of infection
  3. Diagnostic methods
  4. Prevention measures
  5. Output

Life cycle and routes of infection

The parasite changes several hosts during its life. Let's dwell on the worm's life cycle in more detail:

  • The snail is the first host of the helminth larva. In her body, two generations of sporocysts develop, from which free-swimming larvae originate (the term cercariae is applied to them). By sticking together, they organize collective cysts.
  • When exhaling, snails spread mucous lumps and cysts, which are eaten by ants. In a new body, the larvae get rid of their existing tail, which is the beginning of a new invasive stage and preparation for other conditions of existence.
  • The infected insect becomes food for the next prey (dogs, sheep, pigs and cattle). In the body, the larvae migrate to the liver. A lanceolate fluke is formed. The cycle begins first with the entry of faeces into the soil.

The use of vegetables and fruits, berries and herbs that are not subject to thorough washing and heat treatment is a source of invasion for humans, because sick insects, such as ants, often crawl into products from the garden.

Signs of infection

Signs of infection caused by the lanceolate fluke are similar to other diseases, so even an experienced specialist can make a mistake when diagnosing. The clinical picture can be manifested by the following symptoms:

  • Discomfort is felt in the area of ​​the right rib, after a while it turns into pain. Since the liver is damaged, it may increase in size, and it becomes denser.
  • There is a violation of stool stability, this can be expressed in constipation, diarrhea, as well as mucous discharge during bowel movements.
  • A decrease in appetite is felt, as a result of which a person loses weight.
  • Hives or other allergic reactions on the skin appear.
  • The skin and whites of the eyes become yellowish, which is characteristic of liver damage.

With a slight lesion, these signs may not be found at all. There are cases when the disease is in a chronic stage and for a long time proceeds in a latent form.

Diagnostic methods

To make a diagnosis, doctors conduct various studies and activities:

  • Study the symptoms;
  • Communicate with the alleged patient to determine whether the person was in contact with a possible source of infection or not;
  • Take the necessary tests, including blood and feces;
  • A comprehensive hardware examination is carried out. Ultrasound of the abdomen is used, with the help of which it is possible to trace the pathogenic effect of parasites on the liver and bile ducts.

Taking feces for analysis is the most common type of detection of flukes in the body, but it will not always be accurate. If the patient ate poorly roasted liver, then the manifestation of lanceolate flukes may be erroneous. Therefore, it is recommended in 7-10 days to undergo an examination for morbidity again in order to determine for sure the cause of the concern.

With dicroceliosis, changes occur in the blood:

  • Alkaline phosphatase should rise;
  • The indicator of bilirubin increases;
  • The number of eosinophils becomes large;
  • Immunoglobulin E is growing.

Lanceolate fluke does not appear in urine.

Prevention measures

Prevention methods consist in pre-processing food (fruits and vegetables), using only purified water.

In the course of treatment, a specialist will select drugs that will be based on symptoms. After the symptomatic course of the disease is eliminated, anthelmintic drugs are prescribed.

Such anthelmintics are used as:

  1. Biltricide. It is the most effective medication that prevents the spread of parasites. After a course of anthelmintic use, the patient undergoes another examination.
  2. Enterosorbents, which include Polyphepan, Polysorb. The presented drugs are designed to remove products from the body that support the vital activity of the helminth.

The final step for the patient is to restore the gastrointestinal tract and prevent re-infection. To do this, you need to follow a diet, give up fatty foods and alcoholic beverages.


In order to detect lanceolate flukes in the body, it will take a lot of time and effort, given that they do not display an obvious clinical picture. Although the risk of infection is not great, but with the manifestation of these symptoms and suspicion of a disease, you need to go to the clinic and get tested.

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