A multicenter prospective clinical cohort study of pulmonary cryptococcosis in adult non-HIV-infected patients in a southeastern province of China

Abstract Background This study investigates the clinical presentations, diagnostic approaches, and treatment outcomes of pulmonary cryptococcosis (PC) in non-HIV patients in Fujian Province, and explores the correlation between immunological status and clinical features. Methods A prospective, multi...

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Main Authors: Meiyan Chen, Shuyang Chen, Meng Wang, Huijuan Wang, Shengyuan Zeng, Liying Zhuang, Guoxiang Lai, Zongyang Yu, Yanjing You, Baosong Xie, Xiujuan Yao, Xiangqi Chen, Lan Lin, Qunying Lin, Yuxiong Hu, Liyu Xu, Xiaohua Li, Xiaohong Chen, Danmei Wu, Gongping Chen, Kaixiong Liu, Hui She, Li Lin, Guoqing Yu, Wen Wen
Format: Article
Language:English
Published: BMC 2025-06-01
Series:Respiratory Research
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Online Access:https://doi.org/10.1186/s12931-025-03283-w
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Summary:Abstract Background This study investigates the clinical presentations, diagnostic approaches, and treatment outcomes of pulmonary cryptococcosis (PC) in non-HIV patients in Fujian Province, and explores the correlation between immunological status and clinical features. Methods A prospective, multicenter cohort study was conducted from April 2017 to March 2022, involving 234 PC patients from 47 hospitals in nine prefecture-level cities in southeastern China’s Fujian Province. Results The study included 145 male and 89 female PC patients, average age 50.66 ± 14.11 years. Immunological status varied: 115 immunocompetent, 17 with potential immunodeficiency due to certain comorbidities, 69 with mild-to-moderate immunodeficiency, and 33 with severe immunodeficiency. Diabetes mellitus was the most common comorbidity. The prevalence of PC is higher in Eastern Fujian (51.7%). 18.4% of patients were exposed to birds/pigeons droppings prior to admission. 37.6% of patients were asymptomatic. Cough and expectoration were common symptoms. Radiologically, multiple lesions with subpleural and lower lobe involvement were typical. The Cryptococcus capsular antigen (CrAg) test showed a sensitivity of 94.9%. Fluconazole was the primary treatment (87.0%), followed by voriconazole. At final follow-up, 85.4% of patients had recovered or improved. Conclusions PC incidence in non-HIV-infected adults in Fujian is higher in males. Most patients were immunocompetent and from eastern Fujian, with few significant environmental exposures. Clinical and radiological findings were non-specific, highlighting diagnostic challenges. The CrAg test is a valuable diagnostic tool. Treatment with fluconazole and voriconazole resulted in favorable outcomes.
ISSN:1465-993X