Pulmonary encystasis is an inflammatory reaction in the lung mucosa caused by the infestation of pulmonary encysted worms into the lung tissue, resulting in the formation of cysts in the lungs, and its symptoms are related to the course of the disease and the severity of the infection in the lungs. The symptoms are related to the course of the disease and the severity of the infection in the lungs. The symptoms usually occur at intervals of 3-4 years or even 20 years after the onset of infection. In the early stage when the cysts are relatively small mild coughing and coughing of sputum may occur, if the cysts become larger and more numerous symptoms of coughing, coughing of sputum, chest pain and hemoptysis may become apparent. If the cyst presses on the trachea, breathing difficulty may occur, and if it presses on the esophagus, swallowing difficulty may occur. If it compresses the associated nerves, neuropathy may then appear, such as droopy eyelids, flushed skin, and no sweating, usually on one side of the face.