Iowa State University Veterinarian Records, RS 22/6/0/9, University Archives, Special Collections Department, Iowa State University, http://www.add.lib.iastate.edu/spcl/arch/rgrp/22-6-0-9.html
An 11 month old Rhodesian Ridgeback had a noncommunicating, cervical dermoid sinus. Radiological examination was used to determine the extent of the sinus. The sinus was excised surgically.
Leyh, Randy and Carithers, Robert W.
"Dermoid Sinus in a Rhodesian Ridgeback,"
Iowa State University Veterinarian: Vol. 41
, Article 8.
Available at: https://lib.dr.iastate.edu/iowastate_veterinarian/vol41/iss1/8