You can find additional information in this site on the general biology of parasitic worms and/or roundworms.
Final location of Dictyocaulus worms
Predilection sites of adult Dictyocaulus worms are trachea, bronchi and bronchioles. Migrating larvae can be found in numerous organs: gut, lymph nodes, thoracic duct (the largest lymph vessel), jugular vein and hear