Lung Abscess

Question 1

Definition of lung abscess

Answer 1

Liquefactive necrosis of lung parenchyma as a result of a pathogen infection, creating a cavity consisting of fluid and debris

Question 2

Risk factors for lung abscess

Answer 2

Aspiration of oropharyngeal secretions, lung malignancy, pneumonia

Question 3

Symptoms of lung abscess

Answer 3

Fever, productive foul smelling cough, dysopnoea, lethargy, night sweats, weight loss, cachexia

Question 4

Signs of lung abscess

Answer 4

Clubbing, dental erosions, peridontal disease, localised dull percussion note, bronchial breathing

Question 5

Investigations into lung abscess

Answer 5

Bloods,sputum culture, CXR and bronchoscopy

Question 6

What is the most common signon CXR

Answer 6

Most commonly posterior segment of upper lobe and apex of lower lobe

Question 7

Conservative management of lung abscess

Answer 7

Chest physio for postural drainage, smoking cessation

Question 8

Medical management of lung abscess

Answer 8

Supportive of O2, fluid and analgesia, ABx IV for 3 weeks followed by oral Abx for 1-2 months

Question 9

Surgical management of lung abscess

Answer 9

CT guided percutaneous drainage or surgical resection