Metástasis cutáneas de origen visceral

Cutaneous metastases are relatively rare in clinical practice and their diagnosis requires a high index of suspicion because clinical findings can be subtle. These metastases reveal the presence of disseminated malignant disease and can lead to the diagnosis of unsuspected internal tumors or the spread or recurrence of an already diagnosed tumor. Early recognition of cutaneous metastases can facilitate prompt and accurate diagnosis resulting in early treatment; however, they are generally indicative of a poor prognosis. Some tumors have a predilection to metastasize to specific areas. Recognition of these patterns provides essential information that can guide the search for the underlying tumor.     

Metástasis acral digital ósea por adenocarcinoma renal con afectación cutánea

—Cutaneous metastases are a rare and late manifestation of the internal malignancies. The likelihood of a visceral malignant tumour producing deposits in the skin is increased if the lesion is anaplastic and of long duration. Acral metastasis are specially atypical. Most acral metastases affect bones with late secondary cutaneous involvement.We report the case of a 67-years-old female with metastatic renal cell carcinoma who presented swelling and blue-reddish discoloration in the distal part of the 2^nd finger of her left hand that had appeared four days before. On the hand X-ray there was a lytic lesion on the third phalanx of this finger. The histopathological findings showed a clear cell proliferation replacing deep dermis. A diagnosis of osseous metastases with late secondary skin involvement from renal cell carcinoma was made.