Onset of pulmonary Epstein –Barr virus‐positive diffuse large B‐cell lymphoma in a patient with silicosis

The underlying silicosis lesions showed predominant Th cells and M1/M2 macrophages, with a lack of B cells, Treg cells, and TRM cells. The imbalance of the immune cells in the microenvironment, at least in part, may help to explain how chronic inflammation contributes to EBV-positive diffuse large B-cell lymphoma. AbstractHow Epstein –Barr virus (EBV)-positive diffuse large B-cell lymphoma (DLBCL) occasionally occurs following chronic inflammation remains to be elucidated. The case of a 57-year-old man who developed pulmonary EBV-positive DLBCL from underlying silicosis lesions is presented. Immunohistochemical examination of the resected silicosis lesions showed predominant helper T cells and M1/M2 macrophages, with a lack of B cells, regulatory T cells, and resident memory T cells. Two years later, EBV-positive DLBCL emerged unexpectedly from the silicosis. The imbalance of the immune cells in the microenvironment, at least in part, may help explain how chronic inflammation contributes to EBV-positive DLBCL.

Source: Thoracic Cancer - November 25, 2021 Category: Cancer & Oncology Authors: Ryosuke Ogata, Hiroshi Soda, Yasuhiro Tanaka, Hiroaki Senju, Midori Shimada, Koki Yamashita, Shota Nakashima, Asuka Umemura, Masataka Yoshida, Takuya Hara, Saeko Jinnai, Keisuke Iwasaki, Yuichi Fukuda, Hiroyuki Yamaguchi, Hiroshi Mukae Tags: CASE REPORT Source Type: research