Fig. 1.

Survival probability of secondary pulmonary alveolar proteinosis cases. In our 9 cases and 155 cases from literatures, 132 cases had the survival information. In 92 cases secondary to hematological diseases, the median survival was 14.95 months as 66 (71.3%) died within 5 years. In 40 cases secondary to other causes, the median survival was to months and 14 (35%) died within 5 years. Log-rank (Mantel-Cox) test X ² = 11.78, P < 0.001