MYCOPLASMA PNEUMONIAE PNEUMONIA Figure 12-33 MYCOPLASMA PNEUMONIAE PNEUMONIA Chest X-ray shows patchy interstitial infiltrates and consolidation. (Courtesy of the CDC PHIL) More about this image found in MYCOPLASMA PNEUMONIAE PNEUMONIA Chest X-ray shows patchy ...

PNEUMOCOCCAL PNEUMONIA Figure 12-3 PNEUMOCOCCAL PNEUMONIA There is a diffuse intra-alveolar neutrophil infiltrate (A, hematoxylin and eosin [H&E] stain) with numerous interspersed gram-positive cocci (B, Gram stain). More about this image found in PNEUMOCOCCAL PNEUMONIA There is a diffuse intra-alveolar neutrophil infilt...

STAPHYLOCOCCUS AUREUS NECROTIZING PNEUMONIA Figure 12-14 STAPHYLOCOCCUS AUREUS NECROTIZING PNEUMONIA H&E (A) and immunohistochemical stains highlight the bacterial organisms (B) and airway-centered infection (C). (Courtesy of the CDC IDPB) More about this image found in STAPHYLOCOCCUS AUREUS NECROTIZING PNEUMONIA H&E (A) a...

PNEUMOCYSTIS PNEUMONIA Figure 21-20 PNEUMOCYSTIS PNEUMONIA Chest X-ray findings range from ground-glass opacification to reticulonodular infiltrates. (Courtesy of the CDC PHIL) More about this image found in PNEUMOCYSTIS PNEUMONIA Chest X-ray findings range from gr...

PNEUMOCYSTIS PNEUMONIA Figure 21-21 PNEUMOCYSTIS PNEUMONIA Typical “foamy” intra-alveolar Pneumocystis exudate forming alveolar casts (A), with characteristic fungal cyst morphology highlighted by a Grocott methenamine silver (GMS) stain (B). (Courtesy of the CDC PHIL) More about this image found in PNEUMOCYSTIS PNEUMONIA Typical “foamy” intra-alveolar ...

PNEUMOCYSTIS PNEUMONIA Figure 21-22 PNEUMOCYSTIS PNEUMONIA A: Unusual histologic patterns in Pneumocystis lung involvement include necrotizing granulomatous inflammation, which may raise the differential diagnosis of tuberculosis. B: GMS highlights the typical collapsed (helmet-shaped) cysts. More about this image found in PNEUMOCYSTIS PNEUMONIA A: Unusual histologic patterns in ...

STREPTOCOCCUS PNEUMONIAE Figure 12-1 STREPTOCOCCUS PNEUMONIAE The microbiology specimen shows characteristic gram-positive cocci arranged in pairs (diplococci). (Courtesy of the Centers for Disease Control and Prevention [CDC] Public Health Image Library [PHIL]) More about this image found in STREPTOCOCCUS PNEUMONIAE The microbiology specimen shows ...

S. PNEUMONIAE VIRULENCE FACTORS Figure 12-2 S. PNEUMONIAE VIRULENCE FACTORS More about this image found in S. PNEUMONIAE VIRULENCE FACTORS

STREPTOCOCCUS PNEUMONIAE Figure 12-5 STREPTOCOCCUS PNEUMONIAE Colonies on blood agar show alpha hemolysis (A), lysis after exposure to bile (B), and lack of growth around optochin (C). More about this image found in STREPTOCOCCUS PNEUMONIAE Colonies on blood agar show alph...

MYCOPLASMA PNEUMONIAE ENCEPHALITIS Figure 12-35 MYCOPLASMA PNEUMONIAE ENCEPHALITIS A: Mural fibrinoid necrosis of blood vessels, surrounding edema, and inflammation are present. B: Immunohistochemistry highlights organisms in the inflammatory infiltrate. (Courtesy of the CDC IDPB) More about this image found in MYCOPLASMA PNEUMONIAE ENCEPHALITIS A: Mural fibrinoid nec...

PERTUSSIS Figure 12-20 PERTUSSIS Typical peribronchial inflammation (A) and early secondary pneumonia with intra-alveolar macrophages and neutrophils (B). (Courtesy of the CDC IDPB) More about this image found in PERTUSSIS Typical peribronchial inflammation (A) and early secondary pneum...

LABORATORY CULTURES Figure 12-44 LABORATORY CULTURES Haemophilus influenzae growth on chocolate agar (A) and Klebsiella pneumoniae growth on MacConkey agar (B). (Courtesy of the CDC PHIL) More about this image found in LABORATORY CULTURES Haemophilus influenzae growth on choc...

SARS-CoV-2 MACROSCOPIC CHANGES Figure 4-9 SARS-CoV-2 MACROSCOPIC CHANGES The lung from an autopsy was significantly enlarged, with prominent pulmonary edema, patchy intra-alveolar hemorrhage, and vascular changes, as well as associated organizing pneumonia (bottom and right). (Courtesy of PA T. M... More about this image found in SARS-CoV-2 MACROSCOPIC CHANGES The lung from an autopsy was significantly ...

PNEUMOCOCCAL MENINGITIS Figure 12-4 PNEUMOCOCCAL MENINGITIS A: Gross findings show a purulent subarachnoidal exudate. (Courtesy of the CDC PHIL) B,C: Microscopy shows a dense leptomeningeal neutrophil infiltration (B) and immunohistochemical staining (C) confirms the presence of large numbers of S. pneumoniae organisms in the infiltrate. (Courtesy of the CDC Infectious Disease Pathology Branch [IDPB]) More about this image found in PNEUMOCOCCAL MENINGITIS A: Gross findings show a purulent subarachnoidal e...