[Prostatic cancer metastasized into the kidney and kidney cancer metastasized into the lung].

In a 81-years old man synchronous triple cancers (prostate, kidney and lung) were found at autopsy. The poorly differentiated prostatic adenocarcinoma metastasized to the clear cell carcinoma of the right kidney and to its solitary lung metastasis. The "neoplasm to neoplasm" metastasis and the "metastasis in metastasis" was confirmed by immunohistochemistry.