Bickerstaff's encephalitis is a rare inflammatory disorder of the central nervous system, first described by Edwin Bickerstaff in 1951. It may also affect the peripheral nervous system, and has features in common with both Miller Fisher syndrome and GuillainâBarrÃ© syndrome. 1  1 Signs and symptoms.  2 Pathophysiology.
Pathophysiology. Tears are produced in the lacrimal gland and drain through the upper and lower puncta into the canaliculi and then into the lacrimal sac and nasolacrimal duct (see Figure: Anatomy of the lacrimal system. ). Obstruction of tear drainage can lead to stasis and infection.
The duct of Wirsung receives tributaries from lobules throughout the pancreas and drains into the CBD; the duct of Santorini drains the upper anterior head and can enter the duodenum 2cm prox to the ampulla of vater at the minor papilla. It can also join the duct of Wirsung and CBD to drain through the Ampulla of Vater.