case_images: PMC9810118_01
case_images: Electrocardiogram with first-degree AV block, prominent R-waves in V1-V3 with associated Q-waves and HR of 73 bpm.
case_images: cureus-0015-00000033308-i01.jpg
case_images: PMC9810118_01_cureus-0015-00000033308-i01.jpg
case_images: FIG1
case_images: The electrocardiogram showed first-degree atrioventricular block, prominent R-waves from V1 to V3 with Q waves (suggestive of posterior fibrosis or septal ventricular hypertrophy), and a heart rate (HR) of 73bpm (Figure 1).
case_images: 99m Tc-Sestamibi scintigraphy. The area radiotraced is highlighted, compatible with parathyroid tissue.
case_images: cureus-0015-00000033308-i02.jpg
case_images: PMC9810118_01_cureus-0015-00000033308-i02.jpg
case_images: FIG2
case_images: No cervical adenopathies or right thyroid remnants were identified. 99mTc-Sestamibi scintigraphy showed an area of tracer uptake, compatible with a large formation of the left parathyroid gland (Figure 2).
case_images: X-ray of the skull (left) and hands (right), without alterations.
case_images: cureus-0015-00000033308-i03.jpg
case_images: PMC9810118_01_cureus-0015-00000033308-i03.jpg
case_images: FIG3