Lobar pneumonia typically affects young and adult patients, is caused mostly by pneumococci, and affects one or more lobes of the lung with fibrinous inflammation that usually resolves. Lobular pneumonia affects patients of extreme ages, is caused by mixed organisms, presents as patchy basal lung involvement bilaterally with suppurative inflammation, and often leads to lysis and complications rather than resolution.

1. Item Lobar pneumonia Lobular pneumonia
Age Young and adults Extremes of ages
Organism Mostly pneumococci Mixed organisms
Grossly Affects one or more than one Patchy, bilateral basal
lobe (Diffuse ) affection of both lungs
Type of inflam- Fibrinous inflammation Suppurative inflammation
mations
Mode of healing Resolution occurs in the Lysis & complications are
most cases most common
Differences between lobar and lobular pneumonia