This pattern, enlarged lobes with coarse echotexture, fits chronic thyroiditis, which is usually the underlying cause of hypothyroidism itself rather than a separate age-related change. The small cystic nodules you mention are common in this setting and are typically just watched over time rather than treated right away. Your
TSH is a little above where it's usually kept for someone on replacement, which is worth a dose review.
Next Steps
Please see your physician or an endocrinologist in person to confirm the nodules only need monitoring and to get your
thyroid dose reassessed.
Health Tips
Don't ignore a persistent throat sensation even if the nodules turn out to be minor.