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Invasive mycoses in patients with connective tissue disease from Southern China: clinical features and associated
Minxi Lao1, Zhongping Zhan2, Fan Su1
1Department of Rheumatology & Geriatrics, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.
Background:
A retrospective study was performed to investigate the clinical features and associated factors of invasive mycoses (IM) in patients with connective tissue disease (CTD) from Southern China.
Methods:
Demographic and clinical data were recorded. Associated factors were analyzed by logistic regression analysis.
Results:
A total of 6911 patients with CTD were included. IM was diagnosed in 32 patients (incidence, 0.5%). IM was predominant in patients with ANCA-associated vasculitis (AAV) (incidence, 1.5%, 7/480). Lung was commonly involved (30/32, 93.8%). Aspergillus spp. (81.3%) were the leading strain. The positive rate of fungi detection in sputum culture was 69.0%. Serum galactomannan (GM) test was positive in bronchoalveolar lavage fluid (BALF) from seven (7/10, 70.0%) patients. Ten patients died (31.3%), including three with AAV (42.9%) and seven with SLE (36.8%). Penicillium marneffei was the most fatal (mortality, 100%). Non-survivors had higher prevalence of leukopenia (30.0% vs 4.5%, P = 0.04), lymphopenia (100.0% vs 59.1%, P = 0.02), elevated serum creatinine (70.0% vs 27.3%, P = 0.02), and co-infection (70.0% vs 18.2%, P = 0.004) than survivors. Multivariate logistic regression analysis showed that lymphopenia [odds ratio (OR) = 3.28, 95% confidence interval (CI) 1.29-8.38, P = 0.01] and median-to-high dose of glucocorticoid (GC) [OR = 3.40, 95% CI 1.04-11.13, P = 0.04] were associated with IM in patients with CTD.
Conclusions:
IM tended to develop in patients with AAV, resulting in high mortality. Sputum culture and GM test in BALF were effective methods to distinguish IM. Vigilance against lymphopenia, impaired kidney function, and co-infection improved the prognosis of IM.
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