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Ross DS, D'Alfonso TM. Papillary Neoplasms of the Breast: Diagnostic Features and Molecular Insights. Surg Pathol Clin 2022; 15:133-146. [PMID: 35236629 DOI: 10.1016/j.path.2021.11.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Papillary neoplasms of the breast are a heterogeneous group of tumors characterized by fibrovascular cores lined by epithelium, with or without myoepithelial cells. Papillary neoplasms include benign, atypical, and malignant tumors that show varying histopathologic features and clinical outcomes. Appropriate pathologic classification is crucial to guide clinical treatment. Classification of papillary neoplasms is largely based on morphology, with immunohistochemistry playing an ancillary role to establish diagnoses. Recent molecular studies have provided insight into the genomics of these lesions. This review summarizes the histologic, immunohistochemical, and molecular features of papillary neoplasms of the breast that are important for diagnosis and treatment.
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Affiliation(s)
- Dara S Ross
- Memorial Sloan Kettering Cancer Center, 1275 York Avenue, S-624, New York, NY 10065, USA
| | - Timothy M D'Alfonso
- Memorial Sloan Kettering Cancer Center, 1275 York Avenue, A-504, New York, NY 10065, USA.
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2
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Triple-negative breast carcinomas of low malignant potential: review on diagnostic criteria and differential diagnoses. Virchows Arch 2021; 480:109-126. [PMID: 34458945 PMCID: PMC8983547 DOI: 10.1007/s00428-021-03174-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 07/13/2021] [Accepted: 07/25/2021] [Indexed: 12/14/2022]
Abstract
Triple-negative breast carcinomas constitute a wide spectrum of lesions, mostly being highly aggressive. Nevertheless, some special histologic subtypes can have low malignant potential. The purpose of the present paper is to review diagnostic criteria and prognostic parameters of breast neoplasms of special histotypes. Specifically, adenoid cystic carcinoma, adenomyoepithelioma, acinic cell carcinoma, mucoepidermoid carcinoma, tall cell carcinoma with reverse polarity, and secretory carcinoma will be discussed. For each tumour, definition and morphological and molecular features, together with prognostic parameters, will be presented. Paradigmatic cases will be illustrated.
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Rakha E, Tan PH, Ellis I, Quinn C. Adenomyoepithelioma of the breast: a proposal for classification. Histopathology 2021; 79:465-479. [PMID: 33829532 DOI: 10.1111/his.14380] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 03/28/2021] [Accepted: 04/04/2021] [Indexed: 12/11/2022]
Abstract
Breast lesions with a prominent myoepithelial cell component constitute a heterogeneous group of benign and malignant neoplastic proliferations. These lesions are often dual epithelial-myoepithelial, but may be purely myoepithelial cell in nature. Benign epithelial-myoepithelial lesions typically maintain the morphology and immunophenotype of the normal bilayer epithelial myoepithelial structures. However, the distinction between the two cell components is not always clear-cut in malignant lesions in which the histogenesis of myoepithelial cells remains uncertain. Neoplastic biphasic epithelial-myoepithelial lesions of the breast include adenomyoepithelioma (AME), pleomorphic adenoma and adenoid cystic carcinoma. Four histological patterns of classical AME have been described: tubular, lobulated, spindle-cell and adenosis variants. Overlapping patterns occur and some AMEs display an intraductal papillary pattern that may represent a fifth variant. AME can be benign or malignant. Classical AME may show atypical features, which are not sufficient for the diagnosis of malignancy (atypical AME). Atypical AME is recognised as a lesion of uncertain malignant potential with limited metastatic capability. Based on the histological features, we propose a classification of malignant AME (M-AME) into three variants: M-AME in situ, M-AME invasive and AME with invasive carcinoma. In this review, we provide an overview of myoepithelial lesions of the breast focusing on the classification of AME to improve not only the consistency of reporting but also help to guide further management decision-making.
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Affiliation(s)
- Emad Rakha
- Department of Histopathology, University of Nottingham and Nottingham University Hospital NHS Trust, Nottingham City Hospital, Nottingham, UK
| | - Puay Hoon Tan
- Division of Pathology, Singapore General Hospital, Singapore, Singapore
| | - Ian Ellis
- Department of Histopathology, University of Nottingham and Nottingham University Hospital NHS Trust, Nottingham City Hospital, Nottingham, UK
| | - Cecily Quinn
- Department of Histopathology, St Vincent's University Hospital, University College, Dublin, Ireland
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4
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Epithelial-Myoepithelial Carcinoma of the Breast with Rhabdoid Features. Case Rep Pathol 2020; 2020:8879035. [PMID: 33083078 PMCID: PMC7563038 DOI: 10.1155/2020/8879035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 09/17/2020] [Indexed: 11/18/2022] Open
Abstract
Epithelial-myoepithelial carcinoma of the breast is a rare biphasic tumor composed of intermixed malignant epithelial and myoepithelial components. Myoepithelial cells are known to adopt varied morphologies, including spindle, chondroid, clear cell, and rhabdoid morphologies, and can represent a diagnostic challenge when isolated on biopsy. Rhabdomyosarcoma, phyllodes tumor, metaplastic carcinoma, and myoepithelial carcinoma are primary breast tumors that all have been shown to exhibit rhabdoid features, whether representing true differentiation or morphological mimic. We here report an epithelial-myoepithelial carcinoma of the breast with rhabdoid features in a 76-year-old woman. The rhabdoid-appearing myoepithelial cells are negative for myogenin, consistent with a rhabdoid-like morphology rather than a true rhabdoid differentiation, comparably to previously described myoepithelial carcinoma with rhabdoid features. To our knowledge, this is the first reported case of epithelial-myoepithelial carcinoma of the breast with rhabdoid features and thus adds another entity to the differential diagnosis of breast lesions with rhabdoid features.
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Recurrent hotspot mutations in HRAS Q61 and PI3K-AKT pathway genes as drivers of breast adenomyoepitheliomas. Nat Commun 2018; 9:1816. [PMID: 29739933 PMCID: PMC5940840 DOI: 10.1038/s41467-018-04128-5] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 04/06/2018] [Indexed: 02/07/2023] Open
Abstract
Adenomyoepithelioma of the breast is a rare tumor characterized by epithelial−myoepithelial differentiation, whose genetic underpinning is largely unknown. Here we show through whole-exome and targeted massively parallel sequencing analysis that whilst estrogen receptor (ER)-positive adenomyoepitheliomas display PIK3CA or AKT1 activating mutations, ER-negative adenomyoepitheliomas harbor highly recurrent codon Q61 HRAS hotspot mutations, which co-occur with PIK3CA or PIK3R1 mutations. In two- and three-dimensional cell culture models, forced expression of HRASQ61R in non-malignant ER-negative breast epithelial cells with or without a PIK3CAH1047R somatic knock-in results in transformation and the acquisition of the cardinal features of adenomyoepitheliomas, including the expression of myoepithelial markers, a reduction in E-cadherin expression, and an increase in AKT signaling. Our results demonstrate that adenomyoepitheliomas are genetically heterogeneous, and qualify mutations in HRAS, a gene whose mutations are vanishingly rare in common-type breast cancers, as likely drivers of ER-negative adenomyoepitheliomas. Adenomyoepithelioma is a rare tumor of the breast with an unknown genetic basis. Here the authors perform a genomic analysis of adenomyoepitheliomas revealing that their repertoire of somatic mutations vary according to the estrogen receptor (ER) status, and that ER-negative tumors harbor recurrent mutations in HRAS and PI3K pathway genes.
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Yuan Z, Qu X, Zhang ZT, Jiang WG. Lessons From Managing the Breast Malignant Adenomyoepithelioma and the Discussion on Treatment Strategy. World J Oncol 2017; 8:126-131. [PMID: 29147448 PMCID: PMC5650010 DOI: 10.14740/wjon1055e] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 06/27/2017] [Indexed: 12/20/2022] Open
Abstract
This study set out to investigate the clinical diagnosis and treatment strategies for malignant breast adenomyoepithelioma (AME), thus increasing the clinical knowledge on such disease. Two patients with malignant breast AME in Beijing Friendship Hospital were selected for study. Here we report the diagnosis and treatment processes in terms of the failure experience and lessons and relate our findings to those in the literature. Malignant breast AME is inclined to affect the areola area. It is recommended to conduct simple mastectomy combined with sentinel lymph node dissection due to the low sensitivity of the preoperative imaging diagnosis and difficulty in the pathological diagnosis. Malignant breast AME features strong invasiveness and vulnerability to recurrence and metastasis. Therefore, the operative schemes and clinical treatment strategies should be formulated based on the comprehensive analyses of the physical signs, imageological examinations and pathology.
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Affiliation(s)
- Zhu Yuan
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Xiang Qu
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Zhong-Tao Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Wen G Jiang
- Cardiff China Medical Research Collaborative, Cardiff University, School of Medicine, Heath Park, Cardiff, CF14 4XN, UK
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Foschini MP, Morandi L, Asioli S, Giove G, Corradini AG, Eusebi V. The morphological spectrum of salivary gland type tumours of the breast. Pathology 2017; 49:215-227. [DOI: 10.1016/j.pathol.2016.10.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 10/23/2016] [Accepted: 10/30/2016] [Indexed: 12/16/2022]
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8
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Moritz AW, Wiedenhoefer JF, Profit AP, Jagirdar J. Breast adenomyoepithelioma and adenomyoepithelioma with carcinoma (malignant adenomyoepithelioma) with associated breast malignancies: A case series emphasizing histologic, radiologic, and clinical correlation. Breast 2016; 29:132-9. [DOI: 10.1016/j.breast.2016.07.018] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2016] [Revised: 07/15/2016] [Accepted: 07/16/2016] [Indexed: 12/26/2022] Open
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9
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Xu J, Tang X, Iida Y, Fuchinoue F, Kusumi T, Yagihashi N, Kawachi K, Shimizu S, Masuda S. Adenomyoepithelioma with carcinoma of the breast: A report of two cases and a review of the literature. Pathol Res Pract 2016; 212:130-4. [DOI: 10.1016/j.prp.2015.09.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Revised: 08/31/2015] [Accepted: 09/02/2015] [Indexed: 10/23/2022]
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10
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Ahmadi N, Negahban S, Aledavood A, Daneshbod K, Daneshbod Y. Malignant Adenomyoepithelioma of the Breast: A Review. Breast J 2015; 21:291-6. [DOI: 10.1111/tbj.12390] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Nasrollah Ahmadi
- Department of Pathobiology; School of Veterinary Medicine; Shiraz University; Shiraz Iran
| | - Shahrzad Negahban
- Department of Pathology; Dr. Daneshbod Pathology Laboratory; Shiraz Iran
| | - Azita Aledavood
- Department of Pathology; Dr. Daneshbod Pathology Laboratory; Shiraz Iran
| | - Khosrow Daneshbod
- Department of Pathology; Dr. Daneshbod Pathology Laboratory; Shiraz Iran
| | - Yahya Daneshbod
- Department of Pathology; Dr. Daneshbod Pathology Laboratory; Shiraz Iran
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11
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Yoon JY, Chitale D. Adenomyoepithelioma of the Breast: A Brief Diagnostic Review. Arch Pathol Lab Med 2013; 137:725-9. [DOI: 10.5858/arpa.2011-0404-rs] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Adenomyoepithelioma of the breast is an uncommon tumor characterized by dual differentiation into luminal cells and myoepithelial cells. A spectrum of histologic patterns is observed among these tumors and even in different areas of individual tumors. These lesions can be diagnostically challenging, especially when a core needle biopsy is performed, because of the heterogeneity of adenomyoepitheliomas. Recognition of the biphasic cellular elements and the characteristic overall architecture of the tumors in combination with immunohistochemistry are essential to establish the correct diagnosis. Although most tumors have a benign clinical course, local recurrences, malignant transformations, and distant metastases have been reported. All the reported malignant adenomyoepitheliomas with metastases have shown significant cytologic atypia and brisk mitotic rates. Therefore, adequate sampling of the tumor to identify these features is necessary. A complete excision with adequate margins would lower the chance of local recurrence or potential for metastasis.
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Affiliation(s)
- Ji Yoon Yoon
- From the Department of Pathology and Laboratory Medicine, Henry Ford Hospital, Detroit, Michigan
| | - Dhananjay Chitale
- From the Department of Pathology and Laboratory Medicine, Henry Ford Hospital, Detroit, Michigan
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12
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Tan PH, Ellis IO. Myoepithelial and epithelial-myoepithelial, mesenchymal and fibroepithelial breast lesions: updates from the WHO Classification of Tumours of the Breast 2012. J Clin Pathol 2013; 66:465-70. [PMID: 23533258 DOI: 10.1136/jclinpath-2012-201078] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
In the 4th edition of the WHO Classification of Tumours of the Breast, myoepithelial lesions are retitled myoepithelial and epithelial-myoepithelial lesions in order to better reflect the dual participation of luminal and myoepithelial compartments in some key entities. Malignant myoepithelioma, described as a section within the chapter on myoepithelial lesions in the 3rd edition, is recognised in the 4th edition as part of metaplastic carcinoma. Adenomyoepithelioma with malignancy is categorised in terms of the cellular component undergoing malignant transformation. The list of antibodies that can be used for identifying myoepithelial cells is updated. Among mesenchymal lesions, new additions are nodular fasciitis and atypical vascular lesions, while the haemangiopericytoma is removed. The 3rd edition stated that pathological prediction of behaviour of phyllodes tumours is difficult in the individual case. In the 4th edition, some progress has been made in prioritisation and weighting of histological parameters that can potentially estimate probability of recurrence. The WHO Working Group advocates leaning towards a diagnosis of fibroadenoma in cases where there is histological uncertainty in distinction from a benign phyllodes tumour, or adopting the neutral term 'benign fibroepithelial neoplasm', as the clinical behaviour of fibroadenoma overlaps with that of benign phyllodes tumour. The 3rd edition terminology of 'periductal stromal sarcoma' is revised to 'periductal stromal tumour', akin to the widespread consensus to avoid the use of the term 'cystosarcoma' in the context of phyllodes tumours.
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Affiliation(s)
- Puay Hoon Tan
- Department of Pathology, Singapore General Hospital, Singapore
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13
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Marian C, Boila A, Soanca D, Malau M, Podeanu DM, Resetkova E, Stolnicu S. Malignant transformation of adenomyoepithelioma of the breast by a monophasic population: a report of two cases and review of literature. APMIS 2012; 121:272-9. [DOI: 10.1111/j.1600-0463.2012.02982.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Accepted: 08/02/2012] [Indexed: 01/02/2023]
Affiliation(s)
- Cristina Marian
- Department of Pathology; University of Medicine; Targu Mures; Romania
| | - Adela Boila
- Department of Pathology; University of Medicine; Targu Mures; Romania
| | - Daniela Soanca
- Department of Pathology; University of Medicine; Targu Mures; Romania
| | - Minerva Malau
- Department of Radiology; Targu Mures County Hospital; Targu Mures; Romania
| | | | - Erika Resetkova
- Department of Pathology; The University of Texas M.D. Anderson Cancer Center; Houston; TX; USA
| | - Simona Stolnicu
- Department of Pathology; University of Medicine; Targu Mures; Romania
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Abstract
Epithelial-myoepithelial proliferations of the breast are a heterogeneous poorly defined group of lesions characterized morphologically by dual differentiation into ductal (luminal) and myoepithelial cells. They include neoplastic and non-neoplastic entities that have overlapping morphologic features that may give rise to diagnostic difficulty. Many of these entities are low grade or of uncertain malignant potential but the biology of some of these rare lesions remains to be elucidated. This article discusses the differential diagnosis of epithelial-myoepithelial lesions of the breast and highlights the morphologic features of some of these entities.
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Affiliation(s)
- Rola H Ali
- Department of Pathology, University of British Columbia and Consultant Pathologist, BC Cancer Agency, 600 West 10th Avenue, Vancouver, BC V5Z 4E6, Canada
| | - Malcolm M Hayes
- Department of Pathology, University of British Columbia and Consultant Pathologist, BC Cancer Agency, 600 West 10th Avenue, Vancouver, BC V5Z 4E6, Canada; Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC V6T 2B5, Canada.
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Couto SS, Bolon B, Cardiff RD. Morphologic manifestations of gene-specific molecular alterations ("genetic addictions") in mouse models of disease. Vet Pathol 2011; 49:116-29. [PMID: 22173978 DOI: 10.1177/0300985811430962] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Neoplasia in both animals and humans results in part from lasting activation of tumor-promoting genes ("oncogenes") or diminished function of genes responsible for preventing neoplastic induction ("tumor suppressor genes"). The concept of "genetic addiction" has emerged to indicate that neoplastic cells cannot maintain a malignant phenotype without sustained genotypic abnormalities related to aberrant activity of oncogene(s) and/or inactivity of tumor suppressor gene(s). Interestingly, some genetic abnormalities reliably produce distinct morphologic patterns that can be used as structural signatures indicating the presence of a specific molecular alteration. Examples of such consistent genetic/microanatomic pairings have been identified for mutated oncogenes, such as rising mucin-producing capacity with RAS overexpression, and mutated tumor suppressor genes-including PTEN eliciting cell hypertrophy, RB1 dictating neuroendocrine differentiation, and TRP53 encouraging sarcomatous transformation. Familiarity with the concept of genetic addiction, as well as the ability to recognize such regular genomic-phenotypic relationships, are of paramount importance for comparative pathologists who are engaged in phenotyping genetically engineered mice to help unravel genomic intricacies in both health and disease.
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Affiliation(s)
- S S Couto
- University of California–Davis, Center for Comparative Medicine, Davis, CA, USA
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Kwon SY, Bae YK, Cho J, Kang SH. Myoepithelial carcinoma with contralateral invasive micropapillary carcinoma of the breast. JOURNAL OF THE KOREAN SURGICAL SOCIETY 2011; 81:211-5. [PMID: 22066123 PMCID: PMC3204549 DOI: 10.4174/jkss.2011.81.3.211] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2010] [Revised: 12/15/2010] [Accepted: 12/17/2010] [Indexed: 11/30/2022]
Abstract
Adenomyoepithelioma (AME) is a rare benign tumor composed of myoepithelial cells (MECs) which are located beneath the epithelial cells of exocrine glands, especially in breast and salivary glands. These tumor cells show biphasic proliferation of epithelial and MECs. Malignant AME is characterized by distant metastasis, local recurrence, cytologic atypia, high mitotic activity and infiltrating tumor margins. A 51-year-old woman presented with an 8 months growth in the left breast. She underwent core-needle biopsy and consecutively mammotome assisted biopsy at a local clinic. After resection, she complained about re-growing remnant lesion and a newly developed solid mass in the right breast. Finally, the remnant mass in the left breast was diagnosed with myoepithelial carcinoma. Concurrently, contralateral breast mass was diagnosed with invasive micropapillary carcinoma. Herein we report an unusual case of synchronous myoepithelial carcinoma and invasive micropapillary carcinoma of the breast with a review of literatures.
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Affiliation(s)
- Sun Young Kwon
- Department of Pathology, Keimyung University School of Medicine, Daegu, Korea
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17
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Hayes MM. Adenomyoepithelioma of the breast: a review stressing its propensity for malignant transformation. J Clin Pathol 2011; 64:477-84. [DOI: 10.1136/jcp.2010.087718] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
This review describes the classification, clinical presentation, pathological features and clinical behaviour of adenomyoepithelioma (AME) of the breast. It is based on an extensive review of the literature and study of a collection of cases built up over a 17-year period at the British Columbia Cancer Agency. The diversity of the morphology encountered in both benign and malignant AME is described. The behaviour of malignant AME seems to be related to the grade of the malignant component.
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Abstract
Malignant myoepithelioma of the breast is rare. A 50-year-old Japanese woman was admitted to our hospital because of a right breast tumor (11 × 10 × 5.5 cm). Core needle biopsy revealed malignant spindle cells. A mastectomy was performed. The tumor consisted of malignant spindle, round, pleomorphic and giant cells with many mitotic figures and necrotic areas. Tumor and osteoclast-like giant cells were scattered. Much lymphovascular permeation was seen. In a few areas, particularly on the tumor periphery, there were merges between the tumor cells and myoepithelial cells of the non-tumorous ducts, as if the tumor emanated from the duct myoepithelium. The tumor was invasive into the skin and pectoral muscle. Immunohistochemically, the tumor cells were diffusely positive for vimentin, CD10, α-smooth muscle antigen, and Ki-67 (labeling = 95%). The significant areas of the tumor were positive for S100 protein, p63, p53, CD68, caldesmon, desmin and TGFβ1. A few areas were positive for pancytokeratin (AE1/3), cytokeratin (CK) 5/6, and CK 34βE12. In contrast, the tumor cells were negative for pancytokeratins (WSS, CAM5.2), CK7, CK8, CK14, CK18, CK19, CK20, EMA, CEA, bcl-2, myoglobin, CD34, CD56, CD45, HMB45, GFAP, α-1-antitrypsin, synaptophysin, estrogen receptor, progesterone receptor, HER2/neu, MUC1, MUC2, MUC5AC and MUC6. The author diagnosed the tumor as malignant myoepithelioma, as myoepithelial markers (C10, p63, S100 protein, α-smooth muscle actin, caldesmon) were positive, and also because there was a transition between the tumor cells and myoepithelium of non-tumorous ducts. The grade of the tumor was high. The patient was treated with chemoradiation and was free of disease 5 months after the operation.
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Affiliation(s)
- Tadashi Terada
- Department of Pathology, Shizuoka City Shimizu Hospital, Shizuoka, Japan.
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Myoepithelial carcinoma of the breast: a clinicopathological and immunohistochemical study of 15 diagnostically challenging cases. Virchows Arch 2010; 457:337-45. [DOI: 10.1007/s00428-010-0950-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2010] [Revised: 06/14/2010] [Accepted: 07/07/2010] [Indexed: 10/19/2022]
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20
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Tomas D, Janković D, Marušić Z, Franceschi A, Mijić A, Krušlin B. Low-grade periductal stromal sarcoma of the breast with myxoid features: Immunohistochemistry. Pathol Int 2009; 59:588-91. [DOI: 10.1111/j.1440-1827.2009.02411.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Fang ZM, Tse RV, Marjoniemi VM, Kozlov S, Lavin MF, Chen H, Kearsley JH, Graham PH, Clarke RA. Radioresistant malignant myoepithelioma of the breast with high level of ataxia telangiectasia mutated protein. J Med Imaging Radiat Oncol 2009; 53:234-9. [DOI: 10.1111/j.1754-9485.2009.02053.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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22
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Honda Y, Iyama KI. Malignant adenomyoepithelioma of the breast combined with invasive lobular carcinoma. Pathol Int 2009; 59:179-84. [DOI: 10.1111/j.1440-1827.2009.02347.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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