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Fungal infections have become crucial factors that threaten the prognosis and survival of blood disease patients. Here, we aim to analyze the epidemiological characteristics and early and advanced CT (computed tomography) manifestations of patients with invasive pulmonary fungal infections secondary to blood system diseases. 65 hospitalized patients from October 2018 to October 2020 with invasive pulmonary fungal infections secondary to blood diseases were enrolled. Blood diseases were recorded according to clinical and imaging data, and the serum galactomannan test (GM test) was conducted. Two senior radiologists analyzed the CT data and recorded the distribution of the lesions and CT signs. We analyzed and counted the first chest CT scan images of patients with nodule/mass type secondary to hematological diseases and invasive pulmonary fungal infection. The first CT nodules or mass-type lesions were statistically significant in nodule size, the number of lesions, distribution, and accompanying signs. Pulmonary fungal infection was common in both lungs during 7-day, 14-day, and 30-day follow-up CT. We also found that the nodular mass type was the main manifestation in the positive group of the GM test. Both the positive group and the negative group had the highest incidence of nodules. The incidence of air crescent signs in nodules or mass lesions in the positive group was higher than in the negative group, and the difference was statistically significant. To conclude, follow-up CT signs after antifungal treatment were highly sensitive to the early diagnosis of hematological diseases and secondary invasive pulmonary Eumycetes infection, which could be used for clinical treatment to provide help. GM test results were also related to CT manifestations such as air crescent sign, cavity, and halo sign.

Imaging Characteristics of Invasive Pulmonary Fungal Infection Secondary to Hematological Diseases and Comparison before and after Treatment