[Metachronic thyroid metastasis secondary to renal carcinoma. Case report].
OBJECTIVE
We report the case of the patient with metachronic thyroid metastasis of a renal adenocarcinoma.


METHODS
61-year-old patient with the diagnosis of renal adenocarcinoma treated by radical nephrectomy (stage pT3bpN0M0) and subsequent interleukin-2 for twelve months presenting four years after surgery with a thyroid nodule displacing the trachea laterally, requiring left hemithyroidectomy.


RESULTS
Pathology reported a lesion made of clear cytoplasm tumor cells, with marked atypia and anaplastic areas, compatible with clear cell renal adenocarcinoma.


CONCLUSIONS
Thyroid metastases are extremely rare, being renal tumors the most frequent origin. They present as painless nodules, cold in gammagram, with normal thyroid hormones. The treatment of choice is surgical excision, with a better prognosis the longer the time between the primary and the appearance of metastasis.
García-Olaverri Rodríguez
Jorge
J
Servicio de Urología, Hospital de Cruces, Baracaldo, España. jolaverri@hotmail.com
Villafruela Mateo
Ainara
A
Azurmendi Arin
Igor
I
Olano Grasa
Iban
I
Llarena Ibarguren
Roberto
R
Pertusa Peña
Carlos
C
D000230:Adenocarcinoma / Q000556:secondary*; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000473:pathology*; D008875:Middle Aged; D013964:Thyroid Neoplasms / Q000556:secondary*