Sep 06, 2005. The thyroid dimensions are at the upper limits of normal - I do 6-8 ultrasounds a day in the office and usually the measurements of normal thyroids are 4-4.8 x 1.0-1.8 x 0.8-1.6cm which is consistent with published dimensions.ep 06, 2005. The thyroid dimensions are at the upper limits of normal - I do 6-8 ultrasounds a day in the office and usually the measurements of normal thyroids are 4-4.8 x 1.0-1.8 x 0.8-1.6cm which is consistent with published dimensions.
Probiotics, the good intestinal bacteria usually prescribed to treat diarrhea, have helped many dogs with tear staining. Look for a veterinary probiotic such as FortiFlora, Prostora or Proviable. Don't give Princess antibiotics like tylosin or tetracycline.robiotics, the good intestinal bacteria usually prescribed to treat diarrhea, have helped many dogs with tear staining. Look for a veterinary probiotic such as FortiFlora, Prostora or Proviable. Don't give Princess antibiotics like tylosin or tetracycline.
There can be many reasons for why your pet gets tear stains. Different causes include blocked tear ducts, eye diseases, parasites, bacterial infections, allergies, abnormally shaped eyes and genetic predisposition. The most common cause of tear staining is excessive tearing, a condition called epiphora.