Localized malignant renal tumors requires a
surgical intervention as first line treatment by partial nephrectomy, or if it
is not feasible, by radical nephrectomy. The risk for recurrence
after surgery is about 30 to 40%, with median delay time of 15 month.
Although the first metastatic site is pulmonary, it is not rare to observe some
metastasis in other organs such as thyroid.
The renal origin of thyroid metastasis is an
important prognostic indicator to consider, because it determines the
therapeutic management of a patient. It has been demonstrated that these
secondary sites could not be synchronous, and can occur until more than twenty
years after the initial nephrectomy.
We report the case of a 70 year old patient
followed for asymptomatic multi-nodular goiter diagnosed with a thyroid
metastasis of renal carcinoma operated eight years ago.
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