[Lung carcinoma and chronic lymphocytic leukemia: report of a synchronous diagnosis]. / Carcinoma de pulmón y leucemia linfoide crónica: a propósito de un diagnóstico sincrónico.

In the follow-up of patients with chronic lymphocytic leukemia seems to exist an increased risk to develop other neoplasms, as lung carcinoma. However it is exceptional that the lung carcinoma precede the chronic lymphocytic leukemia, or their simultaneous diagnosis, because there are only isolated references in the literature. We present a rare case of a man 75 years-old, very smoker, diagnosed of synchronous cancer of squamous cell carcinoma of the lung, and chronic lymphocytic leukemia upon-evaluating respiratory symptoms of two months of evolution. Also, they are discussed the possible pathogenesis of this association together with a review of the literature.