Career
In 1934 he obtained his habilitation with the thesis "Carcinoid und Carcinom", later serving as a professor in Danzig, Graz and Göttingen. Best known for establishing the concept of the diffuse neuroendocrine system (DNES), he also made contributions in his research of various benign and malignant tumors, the transformation of lipids, the origin of the nevus and on disorders of cellular metabolism. "Feyrter"s cells": Synonym for neuroendocrine cells, also known as "clear cells" or Kultschitzky cells.
"Feyrter disease": Plasmacytosis of pulmonary tissue that affects premature infants.