Sandbox:Aditya

Classification

Based on duration

• Acute
  • If symptoms present for less than 6 weeks before presenting to medical care
• Chronic
  • If symptoms persist for more than 6 weeks

Based on Etiology

• Primary
  • Abscess develops in patients who were healthy previously or with conditions who are more prone for aspiration
    • Aspiration of oropharyngeal secretions
    • Immunodeficiency conditions like HIV
    • Necrotizing pneumonitis
• Secondary
  • Bronchial obstruction
  • Hematogenic dissemination
  • Infection spread from mediastinum
  • Coexisting Lung Diseases

Based on mode of spread

• Bronchiogenic
  • Aspiration of Oropharyngeal secretions
  • Bronchial obstruction by Tumor
  • Foreign body,Conegnital MMal formationsand Enlarged LymphNodes
• Hematogenic
  • Infective endocarditis
  • Abdominal Sepsis
  • Septic Thromboembolisim