Middle lobe fibrous foci

Introduction The middle lobe fiber foci, often a fibrotic lesion left after natural healing after a lung infection. The interstitial lung tissue is composed of collagen, elastin and protein saccharides. When the fibroblasts are damaged by chemical or physical damage, collagen is secreted to repair the interstitial tissues of the lungs, which leads to pulmonary fibrosis; After injury, the result of human body repair.

Cause

The etiology of pulmonary fibrosis is mainly characterized by early alveolitis, serous and cellular components in the alveoli, massive mononuclear cells in the interstitial lung, infiltration of inflammatory cells such as lymphocytes, plasma cells, and alveolar macrophages. The alveolar structure is intact. In the advanced stage, chronic inflammation has been alleviated, the alveolar structure is replaced by solid collagen, and the alveolar wall is destroyed, forming an expanded honeycomb lung. Collagen, extracellular matrix, and fibroblasts are distributed in the stroma, and alveolar epithelium is metamorphosed into squamous epithelium. Based on the above pathological changes, clinical manifestations were progressive dyspnea or irritating dry cough. Chest X-ray showed reticular shadows in the middle and lower lungs, and lung function was restrictive ventilatory dysfunction. The condition progressed continuously and eventually died of respiratory failure.

an examination

Related inspection

Lung imaging pulmonary function test

Perform lung function tests and lung imaging tests.

Differential diagnosis

Can be differentiated from lung and lung lesions.

Intrapulmonary lesions refer to pathological changes in the interior of the lung, leading to necrosis of the lung tissue, affecting the normal function of the lung.

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