Diagnosis: Injury of the type associated with doxycycline medication. Note the peculiar fibrinoid change in the tiny vessels beneath the...

This is a curiosity that can occasionally be seen in gastroesophageal junctional samples. There is respiratory type metaplasia. Cilia...

This is an example of hypermucinous colitis-associated dysplasia. Atypia is more subtle than that in more conventional dysplasia but the...