![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgMCH3su-Q2V215EsAUD0RLbiF-qJaWrnJ-E1uQB_gRcjm61x7geXSq7q2M9_7X1DsatkMRTvCJTQNYIL-e68rS2Kj3L8v_ppfNBaCXYdxwwW8Z3Bz3WgPEyCLrFARS-ShfCmmITUWvIgvd/s320/lung+abscess.png)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgfX-W4DrlQSqCbwIIOTwgjf8elgi7EU3ffJ6P3CBx5KB9HclHtsiCbSGuFaXQ2lw4m_8LD9KTPoH_Byb29P_f8wxvv3qSTHy114xGEfTuEY7-_JoXkKj_xw0rvUFve0JKmE4n00pfhaWsk/s320/lung+abscess+1.png)
Focal suppuration with necrosis of lung tissue
Strep, Staph, Gram negative & anaerobes
anaerobes are commensals of oral cavity: Prevotella, Fusobacterium, Bacteroides, Peptostreptococcus, and microaerophilic streptococci.
Mechanism:
Aspiration: bacteria from carious teeth or infected sinuses or tonsils, during oral surgery, anesthesia, coma, or alcoholic intoxication
Post pneumonic
Septic embolism, from septic thrombophlebitis or from infective endocarditis
Neoplasms: obstructing a bronchus
staphylococcal bacteremia
more common on the right side (more vertical airways)- single
Abscess that have developed in the course of pneumonia or bronchiectasis are commonly multiple, basal, and diffusely scattered
ruptures into airways forming air-fluid level on radiographic examination, and bronchopleural fistulas
C/F copious amounts of foul-smelling, purulent sputum; occasionally, hemoptysis, clubbing, weight loss, anemia and secondary amyloidosis
Complications: Systemic spread, septicemia
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiyLneCak68rqL6QcBAgTbOcaAjw8hPFceoa11np7Jx2xZ-M_ArR_KoFJZQc7S7qvesjin1RuBIVPZvLNW1gGdICc5-TQJCLNXeceAJO2mwPb5lq9Oj0-KPzlx3XgordG3NHgWe8pQP07sP/s320/lung+abscess+2.png)
Abscess formation.
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