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FAST REVISION
Radiology
The extraoral radiograph that best demonstrates the subcondylar portion of the mandible is Towne's view.
Microbiology
Colonies of E. coli serotype O157:H7 appear on Mac Conkey Sorbitol Agar as colourless colonies non-sorbitol fermenter. Others E. coli, sorbitol fermenters, give red colonies and gram-negative non-sorbitol fermenters appear translucent.
General Medicine
Crohn's disease typically presents with a cobblestone appearance of the mucosa due to the alternating involvement of diseased and healthy mucosal segments, strictures and skip lesions due to transmural inflammation affecting all layers of the bo