41.1 MB (4.8 MB compressed)
3701 x 3881 pixels
31.2 x 32.8 cm ⏐ 12.3 x 12.9 in (300dpi)
SCIENCE PHOTO LIBRARY SCIENCE PHOTO LIBRARY
Lobar pneumonia. Coloured computer-enhanced chest X-ray showing lobar pneumonia in a patient's lung. The affected area of congestion appears in the lower lobe (yellow/grey) of the lung at right, above the shadow of the heart. Normal lung tissue is purple. Bones of the neck and shoulders are yellow. Lobar pneumonia is caused by Streptococcus pneumoniae bacteria and initially affects a single lobe of one of the lungs. Alveoli (air sacs) in the lobe become blocked with pus, preventing air flow, causing tissue to solidify. Symptoms include fever, painful breathing and a cough that produces rust-coloured sputum.
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