It may be a tumor formed by the development of aberrant embryonic tissue in the lungs, mostly benign, which can contain tissues from all three germ layers, such as hair, muscle, cartilage, glands, and epithelium.

bubble_chart Diagnosis

1. Medical history and symptoms:

The onset age is mostly in young adults, with no difference between males and females. There are no symptoms in the early stage. When the tumor is large or complicated by infection, symptoms such as cough, expectoration, dyspnea, or even hemoptysis may occur, which can recur repeatedly. A few patients may present with clubbing fingers.

2. Physical examination findings:

There are no symptoms in the early stage. In cases of large tumors, auscultation of the lungs may reveal localized weakened breath sounds. After infection, moist rales may be heard in the lungs.

3. Auxiliary examinations:

Chest X-ray may show round or oval solid or cystic shadows of varying sizes, with uneven density inside the cyst. Teeth or calcified shadows are often visible. Chest CT scans can more clearly display the internal structure of the cyst, aiding in diagnosis. If necessary, transthoracic lung biopsy or exploratory thoracotomy may be performed for definitive diagnosis.

4. Differential diagnosis:

It should be differentiated from lung cancer and other benign lung tumors.

bubble_chart Treatment Measures

Asymptomatic individuals do not require treatment; antibiotics are administered in case of infection. For severe compression symptoms caused by large tumors, surgical removal may be performed.