The Pseudomonas aeruginosa is not very frequent cause of community-acquired pneumonia, they are generally related with factors of risk and it is even less usual that coexists associated to lung tuberculosis. We report a 19 year-old woman with pneumonia by these two entities, with clinical symptoms of cough, green expectoration, dyspnea at rest, fever, left chest pain, chest radiographs revealed alveolar opacity of the whole left lung and right multilobar pneumonia, diagnosis was performed by bronchoalveolar lavage, with cultivation and colony count 105 of Pseudomonas a. and staining samples for an acid-fast bacillus and cultivate for Mycobacterium tuberculosis was positive. With favorable response to the treatment.