case_images: PMC8421599_01
case_images: Thyroid ultrasound. (A)
  Case 1: transverse view of the right thyroid lobe with an ill-defined hypoechoic area (arrow). (B)
  Case 1: longitudinal view of the right thyroid lobe with decreased blood flow within the hypoechoic areas on color-coded Doppler sonography. (C)
  Case 2: transverse view of the right thyroid lobe with a distinct hypoechoic area (arrow). (D)
  Case 2: transverse view of the right thyroid lobe with decreased blood flow within the hypoechoic area on color-coded Doppler sonography.
case_images: fmed-08-737142-g0001.jpg
case_images: PMC8421599_02_fmed-08-737142-g0001.jpg
case_images: F1
case_images: Sonography showed a normal-sized thyroid (10 ml) with land-map-shaped, hypoechoic, confluent areas with decreased vascularity almost filling the right thyroid lobe (Figures 1C,D).
case_images: PMC8421599_02
case_images: Thyroid ultrasound. (A)
  Case 1: transverse view of the right thyroid lobe with an ill-defined hypoechoic area (arrow). (B)
  Case 1: longitudinal view of the right thyroid lobe with decreased blood flow within the hypoechoic areas on color-coded Doppler sonography. (C)
  Case 2: transverse view of the right thyroid lobe with a distinct hypoechoic area (arrow). (D)
  Case 2: transverse view of the right thyroid lobe with decreased blood flow within the hypoechoic area on color-coded Doppler sonography.
case_images: fmed-08-737142-g0001.jpg
case_images: PMC8421599_02_fmed-08-737142-g0001.jpg
case_images: F1
case_images: Sonography showed a normal-sized thyroid (10 ml) with land-map-shaped, hypoechoic, confluent areas with decreased vascularity almost filling the right thyroid lobe (Figures 1C,D).