We pass to describe a case of non Hodgkin's secondary lymphoma with metachronic affectation in bladder and left kidney, in a patient with different extranodals locations. Both in bladder and kidney, it was a low grade lymphoma type B with centrofolicular cells. We suggest haematogenous dissemination and affinity of lymphomatous clone to the urinary tract. We establish some diagnostic considerations, such about the therapeutic management in this type of pathologies.

LINFOMA NO HODGKIN Y APARATO URINARIO. A PROPÓSITO DE UN CASO Describimos un caso de linfoma secundario no Hodgkin con presentación metacrónica en vejiga y riñón izquierdo, en un paciente con diferentes afectaciones extragonadales. Tanto en la vejiga como en el riñón se trataba de un linfoma de bajo grado tipo B de células centrofoliculares. Se sugiere la diseminación hematógena y afinidad del clon linfomatoso por el aparato urinario. Se establecen algunas consideraciones diagnósticas, así como sobre el enfoque terapéutico en este tipo de patologías.

We can say that in military hospitals, pioneer institutions in health-care in our country, approximately 25% of the pathology over the second half of the 19th century would correspond to sexually transmitted diseases (STD,) with hospital wards dedicated to these diseases , initially associated with genitourinary diseases. The "military drip" or blennorrhagic ure