Abstract
Castleman's disease (CD) is a rare non-neoplastic lymphoproliferative disorder with ambiguous etiology. This study aimed to evaluate the potential association between hepatitis B virus (HBV) and CD and to characterize the HBV-positive CD patients in China, an endemic area for HBV infection. We compared the prevalence of HBV infection in 35 consecutive CD patients initially diagnosed in our hospitals over a 10-year period with an age- and sex-matched healthy control, a national population-based control, and a non-Hodgkin's lymphoma (NHL) control. We found that the prevalence of HBV infection in CD was 17.1% (6/35), which was as high as the NHL control (19.9%, P = 0.693), but significantly higher than the age- and sex-matched healthy control (6.9%, P = 0.033) and the national population-based control (7.2%, P = 0.037). Next, we compared the clinicopathological characteristics between HBV-positive and HBV-negative CD patients. We found that HBV-positive CD patients had a significantly higher NHL malignant transformation rate (33.3% vs. 0%, P = 0.025), higher splenomegaly rate (83.3% vs. 27.6%, P = 0.019), and much poorer prognosis (estimated mean overall survival time (50.83 vs. 64.34 months, P = 0.016). In conclusion, our findings suggest an association between HBV infection and development of CD. CD patients with HBV infection have their own distinguished features.
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