There have been various opinions in the classification and nomenclature of the lung
cyst, but the one recently approved by most of the clinicians and pathologists is as
follows;
¥°. Congenital Pulmonary Cysts.
A. Bronchogenic cell type
1. Solitary
2. Multiple
B. Alveolar cell type
1. Solitary(balloon cyst, pneumatocele)
2. Multiple
C. Bronchogenic and alveolar types combined
¥±. Acquired Pulmonary Cysts.
A. Bullous emphysema
B. Subpleural blebs
According to the statistical data by Weaver, etc, the incidence of the congenital lung
cyst in young adults is 5 out of every 100.000.
This writer has experienced 2 cases of congenital lung cyst, one without any clinical
symptom and the other with the complaints of hemoptysis, which I am therefore
reporting.
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