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ULTRASONOGRAPHY OF HISTOLOGICALLY NORMAL PARATHYROID GLANDS AND THYROID LOBULES IN NORMOCALCEMIC DOGS
Author(s) -
LILES SOFIJA R.,
LINDER KEITH E.,
CAIN BRANDON,
PEASE ANTHONY P.
Publication year - 2010
Publication title -
veterinary radiology and ultrasound
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.541
H-Index - 60
eISSN - 1740-8261
pISSN - 1058-8183
DOI - 10.1111/j.1740-8261.2010.01686.x
Subject(s) - medicine , thyroid , ultrasonography , ultrasound , parathyroid gland , parathyroid hormone , radiology , pathology , anatomy , nuclear medicine , calcium
The purpose of this study is to characterize the sonographic appearance of canine parathyroid glands using high‐resolution ultrasonography. Ten cadaver dogs were studied after euthanasia for reasons not relating to the parathyroid. The cervical region was examined using a 13–5 MHz linear transducer in right and left recumbency. Ultrasonographic features of the parathyroid and thyroid glands were compared with the gross and histopathologic findings. Thirty‐five structures were identified sonographically as parathyroid glands but only 26 of 35 glands (74% positive predictive value) were proven to be normal parathyroid glands histopathologically. Of the nine false positives, five (14%) were proven to be lobular thyroid tissue. The remaining four (11%) structures were visible grossly or found histopathologically. There were no statistical differences between ultrasonographic and gross measurements of the parathyroid glands. The average size as seen sonographically was 3.3 × 2.2 × 1.7 mm and the average gross size was 3.7 × 2.6 × 1.6 mm (length, width, height). The average size of the thyroid lobules assessed sonographically was 2.3 × 1.6 × 0.8 mm (length, width, height). Normal parathyroid glands can be identified using high‐resolution ultrasonography. But some thyroid lobules will be misinterpreted as parathyroid glands; this will result in false positives when identifying parathyroid glands with ultrasonography.