Malignancies associated with the immunocompromised state.

Neoplastic disease occurs more frequently in immunocompromised patients than in the general population. These tumors occur at an earlier age and behave more aggressively. Their origin is linked to viral infection and other causes of immunodeficiency, such as antirejection drugs. Despite aggressive therapy, these patients have a poor prognosis when compared with immunocompetent individuals with similar tumors.