SM 167a Lung Pathology & Restrictive Lung Disease Flashcards
What 2 areas should be examined when looking at a Lung?
Surface of the Lung + Cut Surface
How should the surface of the Lung appear?
Smooth + Glistening + No Adhered Structures
How should the cut surface of the Lung appear?
Color = Red/Maroon + Consistency = Sponge-like + Air Spaces = Patent/Wide Open/Few/Central
What colors of the Lung are worrisome?
Red Lung cut surface = hemorrhage Grey Lung cut surface = Bad
What type of cell is found on the epithelium of larger Airway histology?
Cilliated Columnar Epithelium
What differentiated Bronchi and Bronchioles?
Bronchi have Cartilage Rings + Submucosal glands while Bronchioles do not
What makes up an Alveolar Septae?
Type I Pneumocyte + Capillary + Type I Pneumocyte = Septae (Very Thin)
What are the two categories of Chronic Lung Disease?
Obstructive Lung Disease + Restrictive Lung Disease
What are the general properties of Obstructive Lung Disease?
Involve the airway, increases resistance to airflow, and does not progress to “honeycomb lung”
What are the general properties of Restrictive Lung Disease?
Involve the lung parenchyma, decreased expansion of lung parenchyma via fibrosis leading to decreased lung capacity, and progresses to “honeycomb lung”
What pathophysiology is associated with Restrictive Lung Disease?
Restrictive Lung Disease often involves Fibrosis, which prevents Alveoli from expanding
What is “honeycomb lung”?
End stage restrictive lung disease
What is categorized as Obstructive Lung Disease?
CAB = COPD (Emphysema and Chronic Bronchitis), Asthma, Bronchiectasis
What is categorized as Restrictive Lung Disease?
HUNS = Hypersensitivity Pneumonitis, Usual Interstitial Pneumonia, Nonspecific Interstitial Pneumonia, and Sarcoidosis
Which forms of Restrictive Lung Disease are patterns?
Usual Interstitial Pneumonia (UIP) and Nonspecific Interstitial Pneumonia (NSIP), they are not diseases but a pattern of injury that result from many other diseases
Which forms of Restrictive Lung Disease are specific disease entities?
Sarcoidosis and Hypersensitivity Pneumononitis
Is UIP a disease or a pattern?
UIP is a pattern
What are common causes of UIP?
IPF, Connective Tissue diseases (Rheumatoid Arthritis), Asbestosis