Disease Definition and Types Gross Appearance Microscopic Appearance
Foregut Cyst • Developmental defect involving • Fibro-collagenous cyst wall lined by pseudos
deficiency of bronchial cartilage, columnar epithelium
elastic tissue and muscle resulting
in cyst formation
• Classified as bronchogenic,
esophageal or enteric cyst
Pulmonary Edema • Swollen •Alveolar capillaries are engorged and intra-alve
• Brown Induration (Chronic Case) appear as fine granular pink material.
•Hemosiderin lade macrophages may be seen
•Thickened & fibrosed alveolar septum in chroni
ARDS • It is a severe, at times life • Lungs are heavy, firm, red and boggy in acute • Interstitial and Intra-alveolar Edema
threatening form of progressive state • Alveolar wall lined with waxy hyaline membr
respiratory insufficiency which • Congestion rich edema fluid + remnants of necrotic cell)
occurs due to severe pulmonary
injury or diffuse alveolar damage
• Types:
o Neonatal ARDS
o Adult ARDS
Lobar Pneumonia • Acute bacterial infection of a part • Stage of Congestion • Stage of Congestion: Dilation and congestion
of the lobe, entire lobe or even • Stage of Red hepatization capillary. Alveolar space filled with neutroph
two lobes of one or both lungs • Stage of Grey Hepatization edema fluid
• Resolution • Red hepatization: massive exudation of red c
neutrophils and fibrin into alveolar space
• Grey Hepatization: Red cells and neutrophils
due to disintegration. macrophages begin to
Fibrin strands are dense and thick
, Lung Abscess • Localized area of suppurative • Suppurative destruction of lung parenchyma
necrosis within the lung cavitation
parenchyma resulting in cavity • Formation of fibro-collagenous wall in chron
formation
Tuberculosis • Communicable chronic • Primary: Gohn Focus beneath pleura and • Granuloma with caseous necrosis
granulomatous disease caused by Enlarged Hilar
Mycobacterium tuberculosis
Circle = Bronchiole, Square = Giant Cell Multiple Granulomas
Foregut Cyst • Developmental defect involving • Fibro-collagenous cyst wall lined by pseudos
deficiency of bronchial cartilage, columnar epithelium
elastic tissue and muscle resulting
in cyst formation
• Classified as bronchogenic,
esophageal or enteric cyst
Pulmonary Edema • Swollen •Alveolar capillaries are engorged and intra-alve
• Brown Induration (Chronic Case) appear as fine granular pink material.
•Hemosiderin lade macrophages may be seen
•Thickened & fibrosed alveolar septum in chroni
ARDS • It is a severe, at times life • Lungs are heavy, firm, red and boggy in acute • Interstitial and Intra-alveolar Edema
threatening form of progressive state • Alveolar wall lined with waxy hyaline membr
respiratory insufficiency which • Congestion rich edema fluid + remnants of necrotic cell)
occurs due to severe pulmonary
injury or diffuse alveolar damage
• Types:
o Neonatal ARDS
o Adult ARDS
Lobar Pneumonia • Acute bacterial infection of a part • Stage of Congestion • Stage of Congestion: Dilation and congestion
of the lobe, entire lobe or even • Stage of Red hepatization capillary. Alveolar space filled with neutroph
two lobes of one or both lungs • Stage of Grey Hepatization edema fluid
• Resolution • Red hepatization: massive exudation of red c
neutrophils and fibrin into alveolar space
• Grey Hepatization: Red cells and neutrophils
due to disintegration. macrophages begin to
Fibrin strands are dense and thick
, Lung Abscess • Localized area of suppurative • Suppurative destruction of lung parenchyma
necrosis within the lung cavitation
parenchyma resulting in cavity • Formation of fibro-collagenous wall in chron
formation
Tuberculosis • Communicable chronic • Primary: Gohn Focus beneath pleura and • Granuloma with caseous necrosis
granulomatous disease caused by Enlarged Hilar
Mycobacterium tuberculosis
Circle = Bronchiole, Square = Giant Cell Multiple Granulomas
