Lung                                          Chart

                  
Cell types: Ciliated, brush, basal, goblet, Clara, argentaffin-endocrine cell, pnuemocyte I and II
 

Differential diagnosis:
 Alveolar duct can be confused with alveoli in lung tissue itself. But the ducts are moderately straight and they lead on to alveoli. They also have cuboidal epitheliulm Do not confuse with adipose tissue spaces which are circular, lung alveoli spaces have more pleiomorphic patterns.

Diagnostic Features:
a. Tissue is hollow and presents with numerous small lumina formed by alveoli which (each) fills less than 1/10th of low power field.
b. The epithelium is NOT of pseudostratified variety but is alveolar septum.

Draw your own section here and make your diagnosis by data base selection below

 

 

 

 

 

 

 

 

 

 

 

 

 

Database selection: Practical Tissue Gross

Level 1: Select hollow
Level 2: Select small as opposed to large since lumen fills less tan 1/10th low power field of tissue of rat to man. This will select from database both cartialge and non cartialge containing tubes.
Level 3: Select spaces which picks out lung tissue

Note the mucosa and its epithelial cell varieties.

 

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