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case_images: In October 2021, the computed tomography of the abdomen indicated a space-occupying lesion in the right lobe of the liver, and liver cancer was considered.
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case_images: A subsequent upper abdominal plain scan and enhanced CT performed in our hospital (11 October) confirmed space-occupying lesions in the right lobe of the liver, about 13.5x13.9 cm in size, suggestive of liver cancer (  Figure 1  ).
case_images: Thyroid ultrasound results showing diffuse thyroid lesions.
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case_images: TgAb 819 IU/mL, and TPOAB 8.24 IU/mL. Thyroid ultrasound revealed a thickness of 1.8 cm in the right thyroid lobe, 0.4 cm in the isthmus, and 1.8 cm in the left lobe. The thyroid echoes were ancestral, reduced and heterogeneous, and the diagnosis indicated diffuse thyroid lesions ( Figure 2 ).
case_images: On 28 December 2021, the computed tomography of the abdomen indicated right lobe liver cancer.
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case_images: CT imaging on 28 December 2021 showed a large mass shadow of mixed density in the right lobe of the liver measuring approximately 14.2x13.4 cm ( Figure 3 ).
case_images: The clinical time course of the development of thyroid disease in the present patient is shown according to several clinical parameters. FT3, FT4, TSH, TgAb, and TPOAb level.
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case_images: TSH 62.47 uIU/mL, TGAB 575.6 IU/mL, and TPOAB 8.69 IU/mL. The clinical time course of the development of thyroid disease in the present patient is shown based on several clinical parameters (FT3, FT4, TSH, TgAb, and TPOAb levels) in  Table 2  and  Figure 4  ).The patient had normal diet and physical strength, increased sleep, unresponsiveness, or other discomfort.
case_images: Timeline for diagnosis, treatment and immune-related adverse events.
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case_images: A timeline describing diagnosis, treatment, and irAEs is shown in  Figure 5 .