Oncologie clinique : rapports de cas

Tumor to Tumor: Metastatic Lobular Breast Carcinoma into Primary Clear Cell Renal Cell Carcinoma

Gema Moreno Abenza*, Oriol Daga Martinez, Liliana Fabiola Castillo Paredes, Jose Luis Ruiz Cerda, Ana Santaballa Bertran, Beatriz Montero Balaguer, Rosa María Viguer Benavent, Guillermina Montoliu Fornas, David Ramos Soler

Tumor to tumor condition is a rare phenomenon described in up to 15% of tumor in patients that present more than one primary tumor simultaneously. The most common metastatic donor primary tumor is lung carcinoma, followed by invasive ductal carcinoma of the breast, prostatic acinar adenocarcinoma, and papillary thyroid carcinoma. Herein, we present a case regarding a 61 year-old tumor patient who developed a metastasis of lobular carcinoma of the breast over a primary clear cell renal cell carcinoma diagnosed incidentally.