Task: Text Categorization
Input (English): Question: A 50-year-old patient with a pleural effusion with the following characteristics: straw appearance, pH 7.3, ratio of pleura / serum proteins 0.8, ratio of LDH pleura / serum 0.9, Gram and Ziehl negative, total lipids, cholesterol and normal triglycerides, cells mesothelial <5%, intense lymphocytosis without atypia, ADA 64 U / l. What diagnosis do you suggest? 
 Options:  <0> Pleural empyema <1> Pleural effusion due to heart failure (transudate). <2> Pleural mesothelioma. <3> Tuberculous pleural effusion <4> Secondary effusion to pulmonary infarction.
Output (English): medicine