Increased volume and uneven density of the left lobe of the thyroid gland is a CT description of a thyroid examination, which can be seen, for example, in thyroid tumors. Through the imaging examination found that the left lobe of the thyroid gland increased in size and uneven density, this is a descriptive diagnosis, but also need to be further judged by blood tests and ultrasound, the ultrasound may suggest thyroid nodules, thyroid adenomas, thyroiditis, etc., the thyroid function may be normal, or it may suggest that the thyroid hyperthyroidism or hypothyroidism, and it is necessary to comprehensively determine the condition of the disease based on the results. Patients with thyroid abnormalities need to seek prompt medical attention and be examined and treated under the guidance of a clinician.