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  • rupture
  • Lung abscess is considered primary (60% ) when it results from existing lung parenchymal process and is termed secondary when it complicates another process e.g. vascular emboli or follows rupture of extrapulmonary abscess into lung. (wikipedia.org)
  • bacterial
  • Bacterial abscesses rarely (if ever) arise de novo within the brain, although establishing a cause can be difficult in many cases. (wikipedia.org)