<prompt> Bronchopneumonia meansInflammatory involvement of a lobe of a lungInflammatory involvement of the airways; the bronchus the lung parenchymaDilatation of the bronchiolesInflammatory involvement of the lymphatics  <response>: Ans. b Inflammatory involvement of the airways; the bronchus the lung parenchyma.BRONCHOPNEUMONIA It is multi focal, heterogenous inflammatory involvement of distal airways, thus distributed along the course of airways patchy affection of lung parenchyma. An Airbronchogram is usually absent volume loss is common with occasional pneumatoceles. Staphylococcus is a common bacteria causing bronchopneumonia.QLOBAR PNEUMONIA It is usually unifocal central in distal airspaces adjacent to the visceral pleura. It spreads rapidly via the pores of Kohn across segmental boundaries producing a uniform consolidation in lung parenchyma. It spares distal airways. Streptococcus pneumoniae is the most common organism causing lobar pneumonia. Klebsiella pneumoniae:- Friedlanders pneumonia- Causes a only small proportion of cases of Community acquired pneumonia- Lobar pneumonia bulging fissure sign--- Predisposing factors: Alcoholism, Diabetes COPD. Rx:- Given both the undesirability of treating the latter strains with penicillins or cephalosporins and the quinolone resistance, empirical treatment of serious or health care-associated Klebsiella infections with amikacin, carbapenems, or tigecycline is prudent.- Polymyxin B can be considered for use against highly resistant strains but is an agent of last resort because of its potential toxicities. 