Ghavidel Mahshid, Mirshahi Ali, Azizzadeh Mohammad, Khoshnegah Javad
Department of Clinical Sciences, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran.
Anat Histol Embryol. 2019 Jul;48(4):325-333. doi: 10.1111/ahe.12443. Epub 2019 Apr 21.
In the present study, the relationship of normal adrenal dimensions with weight, aortic diameter, age and sex was evaluated. Moreover, a formula for estimating the normal dimensions of adrenal gland was provided. Thirty-two intact adult dogs that were considered healthy based on history, physical examination, routine blood works and specific adrenal tests as well as absence of any abnormal ultrasonographic findings were included. Adrenal glands and abdominal aorta were imaged in the sagittal plane by ultrasound. Length, maximal height of the cranial and caudal poles, area and circumference of the left and right adrenal glands and also the internal diameter of the abdominal aorta were measured. Analysis showed that there is a positive correlation between the adrenal gland dimensions and weight and aortic diameter. The ratio of adrenal gland dimensions and the aortic diameter was calculated, but this ratio showed a great amount of variability in tandem with a significant correlation to the weight; Meaning that the ratio of the adrenal gland dimensions to the aortic diameter was not a reliable index for evaluating the size of the normal adrenal gland in animals with different weights. Therefore, we used the weight along with adrenal measurements in a linear regression model, and then, we were able to estimate the adrenal gland dimensions in different weights. Knowing the relationship of normal adrenal dimensions with the indices such as weight, age, sex and diameter of abdominal aorta can help the clinicians to diagnose the adrenal gland diseases.
在本研究中，评估了正常肾上腺大小与体重、主动脉直径、年龄和性别的关系。此外，还提供了一个估计肾上腺正常大小的公式。纳入了32只成年健康犬，这些犬根据病史、体格检查、常规血液检查、特定肾上腺检查以及无任何异常超声检查结果而被认为健康。通过超声在矢状面成像肾上腺和腹主动脉。测量左、右肾上腺的长度、头极和尾极的最大高度、面积和周长以及腹主动脉的内径。分析表明，肾上腺大小与体重和主动脉直径之间存在正相关。计算了肾上腺大小与主动脉直径的比值，但该比值显示出很大的变异性，同时与体重有显著相关性；这意味着肾上腺大小与主动脉直径的比值不是评估不同体重动物正常肾上腺大小的可靠指标。因此，我们在一个线性回归模型中使用体重和肾上腺测量值，然后能够估计不同体重时的肾上腺大小。了解正常肾上腺大小与体重、年龄、性别和腹主动脉直径等指标的关系有助于临床医生诊断肾上腺疾病。
