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Shibahara Y, Delabie JMA, Kulkarni S, Grant A, Prica A, McCready DR, Done SJ. Primary MALT lymphoma of the breast: pathological and radiological characteristics. Breast Cancer Res Treat 2024; 205:387-394. [PMID: 38427311 DOI: 10.1007/s10549-024-07258-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 01/18/2024] [Indexed: 03/02/2024]
Abstract
PURPOSE Primary Mucosa-associated lymphoid tissue (MALT) lymphoma is a rare diagnosis in the breast, and clinical diagnosis based on radiological features is often challenging. This study aimed to evaluate the clinicopathological, and radiological characteristics of the patients diagnosed with primary breast MALT lymphoma. METHODS This study examined 18 cases of primary MALT lymphoma of the breast diagnosed at a single tertiary center between January 2002 to December 2020. Medical charts, radiological imaging and original pathology slides were reviewed for each case. RESULTS All cases were female (gender assigned at birth) and presented with a palpable mass or an incidental imaging finding. Imaging presentation ranged from mammographic asymmetries, circumscribed masses, and ultrasound masses lacking suspicious features. Seventeen cases were biopsied under ultrasound; one received a diagnostic excision biopsy. Microscopic examination of the breast specimens demonstrated atypical small lymphocyte infiltration with plasmacytoid differentiation and rare lymphoepithelial lesions. Immunohistochemistry was performed in all cases and established the diagnosis. Most patients were treated with radiotherapy, and only three were treated with chemotherapy. The median follow-up period was 4 years and 7.5 months, and all patients were alive at the last follow-up. CONCLUSION Primary MALT breast lymphomas are usually indolent and non-systemic, and local radiotherapy may effectively alleviate local symptoms. Radiological findings show overlap with benign morphological features, which can delay the diagnosis of this unusual etiology. Although further studies involving a larger cohort could help establish the clinical and radiological characteristics of primary breast MALT lymphomas, pathology remains the primary method of diagnosis. TRIAL REGISTRATION NUMBER University Health Network Ethics Committee (CAPCR/UHN REB number 19-5844), retrospectively registered.
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Affiliation(s)
- Yukiko Shibahara
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
- Laboratory Medicine Program, Department of Pathology, Toronto General Hospital, University Health Network, 200 Elizabeth Street, 11th Floor, Toronto, ON, M5G 2C4, Canada
- Department of Pathology, Kitasato University, Sagamihara, Kanagawa, Japan
| | - Jan M A Delabie
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
- Laboratory Medicine Program, Department of Pathology, Toronto General Hospital, University Health Network, 200 Elizabeth Street, 11th Floor, Toronto, ON, M5G 2C4, Canada
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Supriya Kulkarni
- Department of Medical Imaging, University of Toronto, Toronto, ON, Canada
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Allison Grant
- Department of Medical Imaging, University of Toronto, Toronto, ON, Canada
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Anca Prica
- Department of Medical Oncology and Hematology, Princess Margaret Cancer Centre, Toronto, ON, Canada
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - David R McCready
- Department of Surgery, University of Toronto, Toronto, ON, Canada
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Susan J Done
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.
- Laboratory Medicine Program, Department of Pathology, Toronto General Hospital, University Health Network, 200 Elizabeth Street, 11th Floor, Toronto, ON, M5G 2C4, Canada.
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada.
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Primary MALT Lymphoma of the Breast Treated with Definitive Radiation. Case Rep Hematol 2016; 2016:1831792. [PMID: 27247809 PMCID: PMC4877461 DOI: 10.1155/2016/1831792] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 04/14/2016] [Accepted: 04/17/2016] [Indexed: 01/22/2023] Open
Abstract
We are reporting a case of a 59-year-old woman, with a family history of breast cancer, who presented with extranodal marginal zone lymphoma (MALT) of the left breast. She received definitive radiation therapy and remains without evidence of disease. Here, we present a case and review the current literature to determine the optimal treatment of this rare presentation of MALT.
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Surov A, Holzhausen HJ, Wienke A, Schmidt J, Thomssen C, Arnold D, Ruschke K, Spielmann RP. Primary and secondary breast lymphoma: prevalence, clinical signs and radiological features. Br J Radiol 2012; 85:e195-205. [PMID: 22665932 DOI: 10.1259/bjr/78413721] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES The purpose of this study was to determine the prevalence, clinical signs and radiological features of breast lymphoma. METHODS This is a retrospective review of 36 patients with breast lymphoma (22 primary and 14 secondary). 35 patients were female and 1 was male; their median age was 65 years (range 24-88 years). In all patients, the diagnosis was confirmed histopathologically. RESULTS The prevalence of breast lymphoma was 1.6% of all identified cases with non-Hodgkin lymphoma and 0.5% of cases with breast cancer. B-cell lymphoma was found in 94% and T-cell lymphoma in 6%. 96 lesions were identified (2.7 per patient). The mean size was 15.8 ± 8.3 mm. The number of intramammary lesions was higher in secondary than in primary lymphoma. The size of the identified intramammary lesions was larger in primary than in secondary lymphoma. Clinically, 86% of the patients presented with solitary or multiple breast lumps. In 14%, breast involvement was diagnosed incidentally during staging examinations. CONCLUSION On mammography, intramammary masses were the most commonly seen (27 patients, 82%). Architectural distortion occurred in three patients (9%). In three patients (9%), no abnormalities were found on mammography. On ultrasound, the identified lesions were homogeneously hypoechoic or heterogeneously mixed hypo- to hyperechoic. On MRI, the morphology of the lesions was variable. After intravenous administration of contrast medium, a marked inhomogeneous contrast enhancement was seen in most cases. On CT, most lesions presented as circumscribed round or oval masses with moderate or high enhancement.
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Affiliation(s)
- A Surov
- Department of Radiology, Martin Luther University Halle-Wittenberg, Halle, Germany.
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Weber MA. [Are there specific findings for mammary lymphomas by radiological imaging?]. Radiologe 2008; 48:113-4. [PMID: 18214415 DOI: 10.1007/s00117-007-1615-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M-A Weber
- Abteilung Radiologie, Deutsches Krebsforschungszentrum (dkfz), Im Neuenheimer Feld 280, 69120, Heidelberg.
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