tracheocele

from The Collaborative International Dictionary of English v.0.48

Tracheocele \Tra"che*o*cele\, n. [Gr. ? the windpipe + ? a
   tumor: cf.F. tracheocele. ] (Med.)
   (a) Goiter.
   (b) A tumor containing air and communicating with the
       trachea. --Morell Mackenzie.
       [1913 Webster]