Lung pathology 1

Anatomy of Respiratory Tract

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1. PNEUMONIA ,[object Object],[object Object],Typical Pneumonia Atypical Pneumonia

Typical Pneumonia Atypical Pneumonia Infection caused by bacteria most common cause of community acquired pneumonia is streptococcus p neumoniae And the most common cause of Nosocomial pneumonia is staphylococcus aureus Infection caused by Mycoplasma, Chlamydia pnemoniae and viruses like RSV Influenza virus, rhinovirus ( most common cause is Mycoplasma pneumoniae . Characterized by neutrophilic infiltration and presence of intra-alveolar exudates (leading to consolidation). Characterized by lymphocytic infiltration and presence of alveolar septal and interstitial inflammation with absence of alveolar exudates Clinical features include onset high grade fever and mucopurulent cough which may also be associated with pleuritic pain. Clinical features include fever, headache and myalgia. Cough and pleural involvement is uncommon.

[object Object],[object Object],Bronchopneumonia Lobar Pneumonia

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2. Lung Abscess ,[object Object],[object Object],[object Object]

[object Object],Miscellaneous Septic emboli Post Obstructive Post pneumonic infection Aspiration Most common Cause Right lower Lobe is the Most frequently Affected Infection caused By Staph.aureus, Klebsiella or type 3 pneumococcus Usually basal, Multiple and Diffusely scattered Due to primary Or Secondary Direct Hematogenous Spread to lung From infection In esophagus or Pleural cavity

[object Object],Obstructive Lung disease Restrictive lung disease Characterized by increased resistance to airflow due to airway obstruction. Spirometry reveals FEV1 FVC Ratio is decreased. Characterized by decreased Expansion of the lung Spirometry reveals reduced total lung capacity and vital Capacity Q ,[object Object],[object Object],[object Object],[object Object],[object Object]

3. TUBERCULOSIS (KOCH’S DISEASE) ,[object Object],[object Object]

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False- negative Mantoux test False-positive Mantoux test ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Clinical Features ,[object Object],[object Object]

Lung pathology 1

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Lung pathology 1