What are the manifestation characteristics of the three types of lung bullae?

Lung bullae are divided into three types. Although their origins may differ, in terms of the degree of manifestation and severity, type II is more severe than type I, and type III is more severe than type II. So from the clinical manifestations, the more severe the symptoms, the larger the disease type. Some lung bullae can also have the three types referred to as three stages. And the onset is like a section of riverbank destroyed by a great river - once it is invaded again by external pathogens, it is extremely easy for pathology to form along the old tract and spread. Each time the disease strikes, the disease advances one stage.

Lung bullae

Type I lung bullae are generally accompanied by normal lung parenchyma, that is, lung bullae mostly arise within the lung parenchyma at the lung apex. Like benign tumors, type I lung bullae have obvious cavities and boundaries. When relatively large, they easily compress the surrounding lung tissue, but the lung parenchyma is not affected. For smaller and fewer lung bullae, the various lung functions are basically normal, and there are generally no obvious symptoms. If the lung bullae develop to be huge, they may fill one side of the chest cavity and compress nerves, causing chest pain, etc. They can be found on chest X-ray or CT.

Type II lung bullae already show widespread emphysema of the lung parenchyma. In fact, most type II lung bullae originate from emphysema, and can also be said to be the stage of continued local progression of emphysema. The number of lung bullae will also be relatively large, and they may be present on both sides. Moreover, type II lung bullae have implanted characteristics, arising from a broad base within the lung. The size development of lung bullae differs, and the degree of involvement and invasion also differs, mainly depending on the severity of the emphysema. There will be symptoms such as chest tightness and shortness of breath.

Lung bullae compression

Type III lung bullae are actually diffuse bullous emphysema. In this type or this stage, the lung parenchyma is completely lost within the lesion, and the lesion site may be the lung end or the entire lung on one side. It may be complicated by obstructive lung disease, so there may not only be chest tightness and shortness of breath, but also symptoms such as hemoptysis and chest pain.

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