TOPICS: Liquefactive necrosis, pus, foul smelling sputum, crackles, air fluid level, aspiration, anaerobic flora, alcoholism, epilepsy, neurologic disease, diverticula, bacterial pneumonia, immunosuppression, elderly, bacteremia, infective endocarditis, bronchial obstruction, post obstructive pneumonia, tuberculosis, Ghon complex, clindamycin, drainage, surgery