AH was present in 10.4% of the patients and was associated with BBP and pulmonary embolism. We think that the association with myocardial infarction is not as relevant because of the small number of patients (four cases). AH was also associated with severe pulmonary complications and the presence of large necrotic areas and hemorrhaging, as is expected to result in cases of massive pulmonary embolism. 22 One group has described pulmonary embolisms in 5% of the patients who died from ARF. 14 Two other groups have reported pulmonary embolisms in 14% and 20% of the patients who died from ARF. 15, 16 Finally, LPIP showed an important association and was the most specific pattern in the HIV/AIDS patients, a finding that has been previously reported. [11] [12] [13] 21 These findings are consistent with the higher prevalence of opportunistic infections, mainly viral, fungal and mycobacterial, that frequently cause LPIP to develop. 21, 28 Liver cirrhosis was also associated with LPIP, although the possible reasons are unknown.