Lombardi M, Balducci L, Vitali M, Cerimele M, Manfredi A
G Chir. 1989 Sep;10(9):508-9.
The authors report a case of metastatic tumor from clear cell carcinoma in the thyroid gland occurred in a patient who had his primary tumor previously treated with right nephrectomy. The time interval before the appearance of the metastasis was 6 years. The diagnosis was made preoperatively because of the peculiar biological behavior of the primary tumor. In fact, the metastasis and the primary presented with neoplastic invasion of the middle thyroid vein and the renal vein respectively. The ultrasound examination revealed the vein thrombus arising from the thyroid and reaching the internal jugular vein through the middle thyroid vein. Subsequent fine needle aspiration biopsy confirmed the diagnosis of metastasis from clear cell renal carcinoma. The low grade of malignancy of the primary from the clinical point of view and the absence of other metastatic locations influenced the therapeutic approach.
作者报告了一例甲状腺透明细胞癌转移瘤病例，该患者先前已接受右肾切除术治疗其原发性肿瘤。转移出现前的时间间隔为6年。由于原发性肿瘤特殊的生物学行为，术前即做出了诊断。事实上，转移瘤和原发性肿瘤分别表现为对甲状腺中静脉和肾静脉的肿瘤侵犯。超声检查显示血栓从甲状腺发出，经甲状腺中静脉延伸至颈内静脉。随后的细针穿刺活检证实为肾透明细胞癌转移。从临床角度看，原发性肿瘤的低恶性程度以及无其他转移部位影响了治疗方法。
