Fibrous exudate

Introduction Fiber exudates are exudates characterized by a large amount of cellulose. When fibrinitis occurs in the serosa and lung, a small amount of cellulose exudes and dissolves and absorbs; a large amount of cellulose exudates easily to become mechanized, and even the serosal cavity is occluded, causing organ dysfunction. For example, cellulosic pericarditis, due to the pulsation of the heart, the two layers of the pericardial wall of the pericardium rub against each other, so that the cellulose exuded in the pericardial cavity is fluffy on the surface of the pericardium, called "fleece heart". If the neutrophil oozing is less and the released proteolytic enzyme is relatively insufficient to completely dissolve and absorb the cellulose, it can be mechanized by the ingrowth of the granulation tissue, and finally cause fibrosis.

Cause

A large amount of exudation of cellulose suggests that capillary and venule damage is heavier, permeability is significantly increased, and a large amount of fibrinogen oozes out of the blood vessel, and is converted into cellulose under the action of tissue factor released by necrotic tissue.

an examination

Related inspection

Urine routine blood routine

If the neutrophil oozing is less and the released proteolytic enzyme is relatively insufficient to completely dissolve and absorb the cellulose, it can be mechanized by the ingrowth of the granulation tissue, and finally cause fibrosis. Occurred in the pleura caused by pleural thickening and adhesion, and even occlusion of the pleural cavity. Occurred in the lungs, such as the gray liver-like phase of lobar pneumonia, a large amount of cellulose exudation in the alveolar cavity, so that the lungs become solid.

Differential diagnosis

Fibrinogen is mainly caused by fibrinogen exudation, which in turn forms fibrin, cellulose. Cellulitis is prone to mucosal, serosal, and lung tissue and needs to be identified.

1. Occurs in the mucous membrane: exuded fibrin, necrotic tissue and neutrophils form a pseudomembrane, also known as pseudomembranous inflammation. The pseudomembranous inflammation of diphtheria, if it occurs in the pharynx, is not easy to fall off, called solid film inflammation.

2. Occurred in the trachea: it is easier to fall off called floating membranous inflammation, easily causing asphyxia.

3. Cellulose inflammation of the serosa: it can cause cellulite adhesion in the body cavity, and then the cellulose is mechanicalized to cause fibrous adhesion.

4. Occurs in the lungs: In addition to a large amount of exuded fibrin, a large number of neutrophils are also seen, which are common in large leaf pneumonia.

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