Fig. 2

Pathogenesis, diagnosis and treatment of HLH during pregnancy. a In the case of HLH during pregnancy, maternal death and foetal death rate is shown by 10 × 10 dot plot. b (left) Proportion of different causes of HLH during pregnancy. (right)The proportion of specific pathogens in the factor of infection. c. a Comparison of HLH in the history of pregnancy between primiparas and pluripara. b The proportion of HLH during pregnancy in different trimesters. c Proportion of hemophagocytosis in 59 patients who underwent bone marrow biopsy. d (Left) A variety of ways of delivery. (Right) The proportion of HLH occurring on different days after delivery. e Number of cases of ferritin in different grades and the corresponding proportions. d (left) Types of complications. (right) Differences in the use of medication in HLH during pregnancy