Primary intravascular large B-cell lymphoma of the lung: a review and case report.

OBJECTIVE:To investigate the clinicopathological features of primary intravascular large B-cell lymphoma (IVLBCL) of the lung. METHODS:Histopathological and clinical data based on lung biopsy were analyzed and used to diagnose a patient with IVLBCL of the lung. RESULTS:Fever and respiratory symptoms were the main presentations, lung biopsy revealed lymphoma cells in the lumen of small blood vessels. Tumor cells expressed Bcl-2, the Bcl-6, CD20, Ki67, MUM-1, Pax5, CD, CD30, and vascular endothelial CD34. CONCLUSIONS:Primary pulmonary IVLBCL of the lung is extremely rare, on chest CT it manifests as diffuse ground glass shadow, or nodular consolidations in the lung, lactate dehydrogenase and C-reactive protein was found to increase, fluorodeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT) is an important and significant diagnostic modality in its early diagnosis. Also, bronchial lung biopsy has the advantage of less trauma and high sensitive rate. R-CHOP is the main treatment for lung primary pulmonary IVLBCL of the lung; however, its prognosis is relatively poor.