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Subcutaneous emphysema can result from puncture of parts of the respiratory or gastrointestinal systems. Particularly in the chest and neck, air may become trapped as a result of penetrating trauma (e.g., gunshot wounds or stab wounds) or blunt trauma. Infection (e.g., gas gangrene) can cause gas to be trapped in the subcutaneous tissues.
20 per 100,000 per year [ 3 ][ 5 ] A pneumothorax is an abnormal collection of air in the pleural space between the lung and the chest wall. [ 3 ] Symptoms typically include sudden onset of sharp, one-sided chest pain and shortness of breath. [ 2 ] In a minority of cases, a one-way valve is formed by an area of damaged tissue, and the amount of ...
Pneumoperitoneum is pneumatosis (abnormal presence of air or other gas) in the peritoneal cavity, a potential space within the abdominal cavity. The most common cause is a perforated abdominal organ, generally from a perforated peptic ulcer, although any part of the bowel may perforate from a benign ulcer, tumor or abdominal trauma.
A CT scan showing air in the mediastinum. Pneumomediastinum (from Greek pneuma – "air", also known as mediastinal emphysema) [ 1 ] is pneumatosis (abnormal presence of air or other gas) in the mediastinum, the central part of the chest cavity. First described in 1819 by René Laennec, [ 2 ][ 3 ] the condition can result from physical trauma ...
Tuberculosis, Lung cancer. A lung cavity or pulmonary cavity is an abnormal, thick-walled, air-filled space within the lung. [1] Cavities in the lung can be caused by infections, cancer, autoimmune conditions, trauma, congenital defects, [2] or pulmonary embolism. [3] The most common cause of a single lung cavity is lung cancer. [4]
Chest x-ray of infant showing CPAM in the left lung causing a mediastinal shift towards the right. The cysts appear as bubbles in the left lung. Congenital pulmonary airway malformation (CPAM) is a rare disease in which the lung airways develop abnormally in the fetus. This leads to infants having pockets of air and cystic masses in their lungs.
A chest tube removes the air and lets the lung expand again. The lung fluid is examined under a microscope and is evaluated for the presence of chemicals and for its color and texture. The degree of clarity is an indicator of infection, cancer, or other conditions that may be causing the buildup of fluid or blood in the pleural space.
Air sac. Air sacs are spaces within an organism where there is the constant presence of air. Among modern animals, birds possess the most air sacs (9–11), with their extinct dinosaurian relatives showing a great increase [clarification needed] in the pneumatization (presence of air) in their bones. [1] Birds use air sacs for respiration as ...