PDF(Pubmed)
Abstract：
Tumor-to-tumor metastasis is a rare, yet important entity. Patients with a history of renal cell carcinoma (RCC) may have tumor deposits to the thyroid gland preceding or following their initial cancer diagnosis for many years. The diagnosis can be challenging, and clinicians must remain suspicious of a newly found thyroid nodule in a patient with a history of RCC. In this review, we report a case of a patient with RCC who was incidentally found to have a thyroid nodule on surveillance imaging found to be consistent with tumor-to-tumor metastasis from RCC into papillary thyroid carcinoma. It is imperative to consider this diagnosis as the thyroid is the most common site of spread, and treatment with partial or total thyroidectomy has led to improved survival.
摘要：
肿瘤到肿瘤的转移是一种罕见的，重要的实体。有肾细胞癌（RCC）病史的患者在最初诊断为癌症之前或之后可能会在甲状腺上沉积肿瘤多年。诊断可能具有挑战性，临床医师必须对有RCC病史的患者新发现的甲状腺结节保持怀疑.在这次审查中,我们报道了1例RCC患者,该患者在影像监测中偶然发现甲状腺结节,结果与RCC向甲状腺乳头状癌的肿瘤间转移相一致.必须考虑这种诊断，因为甲状腺是最常见的传播部位，部分或全部甲状腺切除术的治疗提高了生存率。
