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 eleven year old, male, collie presented for evaluation of a right facial mass. The mass was located rostroventrally to the right eye. Antibiotic therapy was initiated. The mass did not regress and two weeks later it was reevaluated. A small amount of pus was obtained from the mass by needle aspiration. The teeth were cleaned at this time and more antibiotics were dispensed.
Riedesel, E. A.
"What's Your Radiographic Diagnosis?,"
Iowa State University Veterinarian: Vol. 53
, Article 13.
Available at: https://lib.dr.iastate.edu/iowastate_veterinarian/vol53/iss2/13