Sternal cutaneous metastasis of hilar cholangiocarcinoma.

Subcutaneous metastasis is a rare initial manifestation of visceral tumors, and represent advanced stages with poor prognosis. We report the case of a female patient with a subcutaneous nodule over the sternum, which was ultimately found to be a metastasis of hilar cholangiocarcinoma. Only 20 cases of subcutaneous metastasis from Klatskin tumors have been reported - a rare occurrence with poor survival rates.