Ensure words are spelled correctly. Try rephrasing keywords or using synonyms. Try less specific keywords. Make your queries as concise as possible.

Ensure words are spelled correctly. Try rephrasing keywords or using synonyms. Try less specific keywords. Make your queries as concise as possible.

甲状腺肿瘤是内分泌系统及头颈部的常见肿瘤，手术是主要治疗手段。术后，患者要学会自我观察，为顺利康复提供有效保障 ...