=====Pericardial Effusion=====

=====Etiology=====
  * Infectious
    * Viral - coxsaccie most likely
    * Bacterial, usually gram positive, TB in endemic regions
  * Non-Infectious
    * Post-MI
      * acute (less than 5 days)
      * Dressler's: 2 weeks to months
    * Uremic
    * Connective tissue disease
      * SLE
      * RA
      * Sclerosis
    * Malignancy
      * Lung
      * Lymphoma
      * Breast
    * Radiation
    * Drugs (SHIP)
    * Trauma
    * Hypothyroidism