Primary extranodal follicular t-cell lymphoma and ductal breast carcinoma diagnosed by a magnetic resonance imaging-guided vacuum-assisted biopsy: A case report

Abstract

Objective: Rare co-existance of disease or pathology Background: Extranodal non-Hodgkin’s lymphomas (NHLs) are most commonly low-grade B-cell lymphomas, and the breast is not an usual site for this condition. This case report describes a 62-year-old woman with a primary NHL and ductal carcinoma in situ (DCIS) of the left breast diagnosed by a magnetic resonance imaging (MRI)-guided vacuum-assisted breast biopsy. The simultaneous diagnosis of breast cancer and NHL is rare, with few cases described in the literature. Primary breast lymphomas account only for 0.04% to 0.5% of breast malignancies. Case Report: In November 2016, a 62-year-old woman was treated for a peripheral T-cell lymphoma (follicular helper T-cell phenotype) of the left upper central breast; later she underwent periodic breast imaging follow-ups. In October 2018, MRI revealed a focal 33-mm non-mass contrast enhancement (according to the Breast Imaging Reporting and Data System –MRI lexicon of the American College of Radiology) in the lower external quadrant of the left breast. Neither mammography nor ultrasonography demonstrated any suspicious features. The multidis-ciplinary medical team performed an MRI-guided vacuum-assisted breast biopsy and the histological analysis confirmed the diagnosis of a DCIS. Subsequently, she underwent surgery resulting in eradication of the disease and has had regular follow-ups, including mammography, ultrasonography, and MRI. Conclusions: This is a rare case of both a primary NHL of the breast and DCIS, which was detected only by MRI. It highlights the role of an MRI-guided vacuum-assisted breast biopsy, which allows an accurate and economic diagnosis in case of suspicious findings on MRI. We recommend the use of MRI in follow-ups for patients with previous breast lymphomas (high-risk patients).