title: Primary diffuse large B-cell lymphoma of the left ureter: A case report.
abstract: Diffuse large B-cell lymphoma (DLBCL) is a subtype of non-Hodgkin lymphoma occurring in various sites, but rarely involving the ureters. Primary DLBCL is a rare entity. Imaging studies in a 82-year-old male patient revealed left hydronephrosis and an area of nodular soft tissue density in the upper ureteral wall. On enhanced computed tomography scans, the lesion exhibited early enhancement. As the lesion was considered to be malignant, a left nephroureterectomy was performed for the purpose of pathological diagnosis. Histological analysis and immunohistochemistry revealed DLBCL. Since the surgery, the patient has survived for 16 months without evidence of a relapse. Thus, in cases with ureteral stenosis or obstruction for which the cause is uncertain, the possibility of primary lymphoma of the ureter should be considered and further histopathological examination of bioptic samples should be performed as soon as possible.
authors: Department of Nephrology, Ningbo First Hospital, Ningbo, Zhejiang 315000, P.R. China.
authors: Ping
authors: P
authors: Chen
authors: Department of Radiology, Ningbo First Hospital, Ningbo, Zhejiang 315000, P.R. China.
authors: Maoqing
authors: M
authors: Jiang
authors: Department of Radiology, Ningbo First Hospital, Ningbo, Zhejiang 315000, P.R. China.
authors: Yuanwei
authors: Y
authors: Lin
authors: Department of Radiology, Ningbo First Hospital, Ningbo, Zhejiang 315000, P.R. China.
authors: Xianwang
authors: X
authors: Ye
authors: Department of Radiology, Ningbo First Hospital, Ningbo, Zhejiang 315000, P.R. China.
authors: Xinzhong
authors: X
authors: Ruan
authors: Department of Radiology, Ningbo First Hospital, Ningbo, Zhejiang 315000, P.R. China.
authors: Qiuli
authors: Q
authors: Huang
keywords: computed tomography; primary diffuse large B-cell lymphoma; ureter