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.