Primary hyperparathyrodism combined with papillary thyroid carcinoma and moderate anemia: A case report and literature reviewHAN Hui¹，YU Tingting²，WANG Yechi³，HONG Shiping¹，WANG Peisong¹，MENG Wei¹，BI Ming⁴（1.Department of Thyroid Surgery， First Hospital， Jilin University，Changchun 130021， China； 2. Department of Otolaryngology and Head-Neck Surgery，First Hospital， Jilin University， Changchun 130021， China； 3. Department of Pathology， First Hospital，Jilin University， Changchun 130021， China；4. Department of General Dentistry， Stomatology Hospital， Jilin University， Changchun 130021， China）