Case of Graves’ disease recovery

Thyroid ultrasound pattern in primary hypothyroidism is similar to Graves’ disease: a report of three cases

“…Simultaneously, there is strong evidence of blood flow regulation by the autonomic nervous system [ 19 , 20 ], which may be a key element in the pathogenesis of primary hypothyroidism and GD. From this viewpoint, it can be considered that the intensity of thyroid blood flow and PSV-STA are directly dependent on the magnitude of neurogenic influence on the thyroid parenchyma [ 21 ].…”

Principles and features of ultrasound hypoechogenicity in diffuse thyroid pathology

“…In practice, the intensity of the diffused thyroid parenchymal hypoechogenicity not only increased (from slight to moderate and significant) but also became normal ( Figure 12 ) ( 14 , 30 ). In other words, the intensity of diffused hypoechogenicity is probably directly associated with the intensity of stromal swelling.…”

“…In other words, the intensity of diffused hypoechogenicity is probably directly associated with the intensity of stromal swelling. In such cases, US Doppler usually reveals similar changes in parenchymal blood flow intensity and systolic peak velocity (SPV) in the thyroid arteries (TA); i.e., the blood flow intensity increases with an increase in the hypoechogenicity and vice versa and decreases with an improvement in the echogenicity ( 30 ). However, considering the absence of an absolute correlation between blood flow intensities and thyroid parenchymal hypoechogenicity ( Figures 4,5 ), this dependency indicates the presence of not only a single regulation source for the blood supply network and stromal swelling process but also the presence of an additional circumstance leading to hypoechogenicity.…”