Prolonged Cough Due To Interest In Dog Nest In Lungs

Parasitical Worms.com When coughing for a long time is a pathological condition in the lungs, many people with prolonged cough are always worried and think that they have tuberculosis, lung cancer, and when they go to the doctor, the results are not like so, take medicine after a while cough to reappear.
Author: Doctor. Le Thi Huong Giang
Medical consultation: Doctor. Doctor
In this article, we would like to share with readers a cause of prolonged cough that few people think of is a prolonged cough due to parasitic helminth parasites in the lungs

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Parasites can affect the lungs in a variety of ways, if detected early for most cystic lung diseases to be cured by medical or surgical methods.
There are many types of parasites that can affect the lungs such as: dog flu disease, strongyloidiasis, cat parasite, liver fluke, larvae and ectopic larvae. They can enter the body through the skin, mucous membranes or through the mouth by swallowing larvae
Once inside the body, the parasites usually enter the lungs through blood The early stages of the disease usually have no obvious symptoms so it is often difficult to detect the disease early.
The symptoms of a prolonged cough depend on the location and size of the parasitic cyst.



. There is now a parasite that has a higher incidence of persistent coughing, and the hosts that carry the disease are very close to humans - dog flukes (Echinococus granulosus).
The tip of the white arrow is a tapeworm that implements a nest in the lungs, causing a prolonged cough
What is schistosomiasis?
The tapeworm has a length of about 2 to 7 mm, a width of about 0.3 mm.
- Pear-shaped head, protruding flukes have 4 cues and hook rings with 28 to 50 hooks.
- Body consists of 3 to 4 segments The first one does not have a genitals, the second is bisexual, the third is longer and broader, the uterus is closed, containing about 500 to 800 flukes
- Tapeworm eggs have larvae inside with 6 hooks like other tapeworms.
Where are dog flukes?
The main hosts of the disease are domestic dogs, jackals, cats, etc. In Vietnam, dogs are often raised for house keeping, house keeping, etc., but cats and dogs are less likely to be concerned, and if they are concerned, they should pay attention to infectious diseases such as rabies, etc.



. Little interest in parasitic diseases in dogs.
In addition, due to the habit of eating or eating raw foods, raw vegetables, raw fish meat, salad .. is the intermediate host of dog flu disease.
How does schistosomiasis disease in the lungs cause cough lasting?
Eggs enter the intestinal tract and develop into 6 hook larvae. The larvae then attach to the small intestine by their hooks and penetrate into the intestinal wall. They reach the liver through the portal circulation.
Most dog fluke larvae are trapped in the liver sinuses but the larvae <0.3 mm in diameter can pass through the liver sinuses, through the liver veins and the inferior vena cava to the right and left heart.


. co-implant in the lungs and cause prolonged cough.
Flukes of dogs nest in the liver
Dog flounder larvae can also reach the lungs via another route They enter the thoracic duct through the lymphatic system of the small intestine, then through the carotid vein into the right heart and then into the lungs to implant and cause a persistent cough.
This is a major pathway by which a dog flukes larvae bypass the liver to reach the lungs, causing a long cough. Another lymphatic route may be the lymphatic system of the hepatic arch and diaphragm, up to the lymph nodes adjacent to the sternum and intercostal.
Direct lung contact by inhalation containing dog flukes. Borrie in a study showed that when the dog's eggs were put into the trachea of the sheep, it led to the development of cysticercosis in the lungs.
Is coughing long due to tapeworm dangerous?
Early stage: The early stage from the time of infection until the flukes give birth to the first egg, an average of 2-20 days, which can last up to 2 months. During migratory larvae in the peritoneal cavity (a layer of muscle and membrane separating the chest and abdomen), some patients experience abdominal pain or epigastric pain, possibly even diarrhea.
When tapeworm larvae penetrate the diaphragm and migrate into the pleural cavity, chest pain may occur.



When the larvae migrate in the lung parenchyma and increase in persistent cough, it may be a dry cough, chest pain, discomfort, there may be a cough with mild sputum.
Late-stage schistosomiasis infection: The second stage of schistosomiasis infection is the time when the adult flukes live in the lungs. The medical period is often difficult because of the great capacity and damage to the lung, which requires surgery to remove and cause pain and cost to the patient. At this stage, patients often present with coughing up blood like pulmonary tuberculosis
Cysts tapeworm dog dissected after surgery
Typically, after coughing for many years, the mucus becomes chocolate-colored, including a mixture of blood, inflammatory cells and eggs released when the follicle surrounding the adult flukes breaks into the bronchi, The patient may feel tired, have no fever, and the exam usually does not detect abnormalities even with recurrent coughing.
How is diagnostic test for schistosomiasis disease of cough?
The gold standard is to see tapeworm eggs.

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