Cavitating Pneumonia >>>>
Staph pneumonia >>>> acute , history of prior flu>>>flucloxacillin or (MRSA)> Vnacomycin or Linozolid
Klebseilla (high mortality )>>> Bilateral ,alcoholic or on dialysis od immunocomprmised >>> Quinolone or 3rd G cephalosporin
Histoplasma capsulatum ( america travel or HIV )>>> Insidous onset >>> Amphotericin or Itraconazole .
Invasive Aspergillosis >>> immunocompromised , apical cavitation , hyphae on bronchoal lavage>>>IV voriconazole