Differential diagnosis of Pneumonia, complications and causes of recurrence

This article is to discuss the complications of pneumonia ,Differential diagnosis (DDx) and Causes of Recurrent pneumonia .

What is the differential diagnosis of pneumonia ?

* Pulmonary infraction.
* Pulmonary T.B.
* Pulmonary edema
* Pulmonary eosinophilia
* Inflammatory conditions below diaphragm e.g. hepatic amaebiasis and subphrenic abscess.

What are the complications of pneumonia ?

1- Post- pneumonic effusion
3- Post pneumonic lung abscess.
5- Meningoencephalitis.
7- Septic shock, multi organ failure
9- Pericarditis, myocarditis
2- Synpneumonic effusion
4- Post pneumonic fibrosis
6- Empyema.
8- ARDs

What are the Causes of Recurrent pneumonia ?

* Bronchial obstruction e.g bronchial adenoma or carcinoma.
* Chronic lung diseases e.g COPO, bronchiectasis and cystic lung
 * Recurrent aspiration e.g in alcoholics, epileptics and severe gastro-esophageal reflux.
 * Immunodeficiency.

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