Hydatid disease

An infection, usually in the lungs or liver, caused by expanding hydatid cysts that destroy the tissues of the infected organ.

A rare, potentially fatal disease in humans caused by infection with the larval stage of a microscopic tapeworm found in foxes, coyotes, dogs (especially sheep dogs), and cats. Hydatid disease is also referred to as alveolar hydatid disease and hydatid cyst disease. In humans, the disease is caused by cyst like tapeworm larvae that are transmitted by animals. The larvae grow slowly in the body, producing parasitic tumors that usually form in the liver, but may also develop in the lungs, brain, and other organs. Left untreated, the infection can cause death.

The disease produced by the cysts of the larval stage of the tapeworm Echinococcus.

An uncommon infestation is triggered by the larval phase of the tiny tapeworm known as Echinococcus Granulosus. Typically, these larvae establish themselves in the liver, lungs, or muscle, leading to cyst formation. In a few exceptional cases, they can even impact the brain.

This infestation is typically found in dogs and sheep, but it can also be transferred to humans if they accidentally consume worm eggs present on items that have been contaminated with dog waste.

The cysts develop at a slow pace, resulting in symptoms that might not manifest for several years. In numerous instances, no symptoms are displayed at all.

Liver cysts may result in a sensitive lump or potentially obstruct the bile duct, leading to jaundice. When present in the lungs, these cysts might exert pressure on an airway, inducing inflammation; if a lung cyst ruptures, it may trigger chest pain, coughing up of blood, and wheezing. Brain cysts have the potential to induce seizures. In rare instances, a ruptured cyst could cause anaphylactic shock, a severe allergic response that can be life-threatening.