All of the following are true regarding Lung abscess, EXCEPT

(A) Abscess > 2 cm in size require excision # LUNG ABSCESS:> Abscesses in the lung do not occur unless the underlying infection has caused thrombosis of the segmental artery and vein leading to infection with tissue necrosis.> The most common causes are secondary to a chronic upper respiratory tract infection (sinusitis, dental abscess) or following bronchial obstruction from a neoplasm.> Treatment:> Most acute abscess resolve with appropriate antibiotic therapy and postural drainage.> The course of antibiotics is usually the highest permitted dose for a prolonged period.> The virulent organism may change with such a prolonged antibiotic assault and the sputum must therefore be regularly monitored.> Surgery is not usually part of the treatment.> It is better for a lung abscess to drain via the bronchus and the contents are coughed up.> Inserting a percutaneous drain creates a particularly difficult form of bronchopleural fistula.