【Abstract】
Background: To assess the value of characteristic computed tomography (CT) findings in predicting the survival of patients with pulmonary B-cell non-Hodgkin's lymphoma (NHL).
Methods: Eighty-four patients who were histopathologically confirmed with pulmonary B-cell NHL between 2004 and 2018 were retrospectively enrolled. All patients underwent chest CT scan at the time of initial diagnosis in our hospital. Characteristic CT findings and clinicopathological features of the patients were analyzed, and Cox regression models were used to determine the relationship of CT findings with overall survival (OS) and progression-free survival (PFS).
Results: Air bronchogram occurred more frequently in patients with early-stage disease, primary pulmonary lymphoma (PPL) and the indolent histological type of lymphoma than in patients with advanced-stage disease, secondary pulmonary lymphoma (SPL), and the aggressive histological type (all p<0.05). The halo sign was observed most in the SPL group (19/48, 40%; P=0.004), while the presence of cross-lobe sign was higher in patients with PPL (13/36, 36%; p=0.010). Pleural involvement and hilar/mediastinal lymphadenopathy were observed more in patients with SPL and the aggressive histological type (33/48 and 27/48; 31/46 and 26/46, respectively; all p<0.05). Survival analyses showed that the number of lung lesions, cross-lobe sign, and pleural involvement were independent prognostic factors for PFS, while the halo sign and pleural involvement were significantly correlated with OS (all p<0.05). More aggressive, advanced-stage cases and male patients showed worse outcomes.
Conclusions: The halo sign and pleural involvement are independent prognostic factors for OS, while the number of lung lesions, cross-lobe sign, and pleural involvement are correlated with PFS.
【中文摘要】
背景:探討 CT 徵象對肺 B 細胞型非霍奇金淋巴瘤的預後判斷價值。
方法:本研究回顧性分析84例肺B細胞型非霍奇金淋巴瘤患者的胸部CT徵象及臨床病理學特徵。使用 Cox 回歸模型分析 CT徵象與患者的總體生存時間(OS)及無進展生存時間(PFS)的關聯。
結果:空氣支氣管徵在 Ann Arbor 分期為 I+II 期、原發性肺淋巴瘤(PPL)及惰性淋巴瘤患者較 III+IV 期、繼發性肺淋巴瘤(SPL)及侵襲性肺淋巴瘤患者更常見(所有 p 值均<0.05)。暈徵在 SPL 患者中更常見(p=0.004)。而跨葉徵的發生率在 PPL 患者更高 (p=0.010)。胸膜累及和肺門/縱隔淋巴結腫的更常見於 SPL 及侵襲性亞型的肺淋巴瘤。在生存分析中,肺部病灶的數量、跨葉徵和胸膜累及是 PFS 的獨立預後因素,而暈徵和胸膜累及與OS明顯相關(所有p值均<0.05)。此外,侵襲性、Ann Arbor 分期 III+IV 期及男性患者的臨床預後較差。
結論:暈徵及胸膜累及是OS的獨立預後因素,而肺部病灶的數量、跨葉徵和胸膜累及與PFS相關。