The pathogenesis of Plummer-Vinson syndrome (PVS) remains speculative, and the existence of the syndrome has been challenged. The prevalent iron deficiency theory remains controversial. Older reports have implicated iron deficiency in the pathogenesis of esophageal webs and dysphagia in predisposed individuals.
August 3-5, 2017 - Experience small-town America for free at the Vinland Fair! The fair is a yearly tradition in small-town Vinland, Kansas, this year from August 3-5.
The Vinland Map The Vinland Map, dated at about 1450 (before Columbus set sail), shows part of North America, all of Europe, part of Africa, all of Asia, and all of Iceland and Greenland. Greenland, in particular, is mapped with amazing accuracy.he Vinland Map The Vinland Map, dated at about 1450 (before Columbus set sail), shows part of North America, all of Europe, part of Africa, all of Asia, and all of Iceland and Greenland. Greenland, in particular, is mapped with amazing accuracy.