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Bae SJ, Eun Yang G. Radiologic and Pathologic Findings of Axillary Intraductal Papilloma Arising in Accessory Breast Tissue: A Case Report and Literature Review. Curr Med Imaging 2022; 18:1526-1528. [PMID: 35546773 DOI: 10.2174/1573405618666220511193557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 01/19/2022] [Accepted: 01/31/2022] [Indexed: 01/25/2023]
Abstract
INTRODUCTION This is a rare case report of axillary intraductal papilloma arising in accessory breast tissue. CASE PRESENTATION A 49-year-old woman presented to our clinic with a palpable right axillary mass that had first appeared 6 months earlier. Mammography and ultrasonography of the right axilla revealed an ovoid mass surrounding accessory breast tissue. Ultrasound-guided 14-G core-needle biopsy was performed and pathologically revealed intraductal papilloma without atypia. CONCLUSION Since ectopic breast tissue is affected by the same pathologic processes as normal breast tissue, a core-needle biopsy can be used to identify the suspicious lesions in axillary breast tissue.
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Affiliation(s)
- Seong Jae Bae
- Department of Radiology, Kangwon National University Hospital, Chuncheon, South Korea
| | - Go Eun Yang
- Department of Radiology, Kangwon National University Hospital, Chuncheon, South Korea
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Larson S, Yang S, Chacko-Stacey A, Mason D, Hart E. Self-Resolving Vulvar Breast Tissue Arising in the Post-Partum Setting: A Case Report and Review of Literature. J Hum Lact 2020; 36:348-351. [PMID: 31075209 DOI: 10.1177/0890334419849593] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
INTRODUCTION During the postpartum period, breast engorgement in preparation for lactation may trigger the onset of vulvar labial nodules that present with pain and discomfort. These labial nodules may originate from ectopic breast tissue and can rarely present in women during the postpartum period in the labia majora. MAIN ISSUE A 37-year-old African American female, gravida 1 para 1, presented to the Loma Linda University Medical Center with complaints of new onset labial swelling worsening 6 days following her full term spontaneous vaginal delivery. Additionally, our respondent complained of difficulty breastfeeding due to intermittent lack of milk production. She reported bilateral breast engorgement with tenderness, despite frequent attempts at breastfeeding. The respondent's presentation did not meet the criteria for other common differentials due to the physical characteristics of the nodules. The location of the nodules along the milk line led physicians to believe that the respondent was presenting with engorged extra-mammary breast tissue in the labia majora. MANAGEMENT The participant was told to observe her course over the next few days as she began to have milk production and ejection. The respondent was seen in clinic for her 6-week postpartum visit, and was no longer complaining of difficulty with breastfeeding. The labial nodules had resolved spontaneously. CONCLUSION A literature search yielded no case reports that described a case of an extra-mammary vulvar mass that self-resolved with resolution of breast engorgement. The infrequent presentation of extra-mammary vulvar tissue makes it difficult to conclude a guideline for diagnosis and management.
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Affiliation(s)
| | - Sara Yang
- 25815 Loyola University Medical Center, Maywood, IL, USA
| | | | | | - Elaine Hart
- 4608 Loma Linda University, Loma Linda, CA, USA
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Thasanabanchong P, Vongsaisuwon M. Unexpected presentation of accessory breast cancer presenting as a subcutaneous mass at costal ridge: a case report. J Med Case Rep 2020; 14:45. [PMID: 32234067 PMCID: PMC7110727 DOI: 10.1186/s13256-020-02366-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 03/05/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND During embryogenesis, bilateral thickening of ectoderm from anterior axillary folds to inguinal folds, called mammary ridges or milk lines, develops into breast tissues. Only a pair in the pectoral area is spared from regression and continuously develops into normal breasts. Accessory breasts can result if the regression process is incomplete. These ectopic breasts can change physiologically and pathologically similar to normal breasts. Unsurprisingly, they are capable of turning malignant. Reported cases show the most common area for accessory breast cancer to be the axillary area. We report a rare case of accessory breast cancer over the costal ridge. CASE PRESENTATION We present the case of a 51-year-old Asian woman who complained of an enlarged mass lower to her left breast developed over the period of 3 months while on contraceptive pills. Unaware that the mass could be an accessory breast, the primary doctor had prescribed oral contraceptives. After our patient had noticed that the mass was obviously growing, she decided to consult a surgeon as the mass continued to grow. Expected to be benign, the mass was investigated by ultrasonography and then excised surgically. A pathology report identified the mass to be a carcinoma of the ectopic breast tissue. However, sentinel lymph node biopsy showed no nodal metastasis of all four lymph nodes. Following surgery, she received chemotherapy, radiation, and antihormonal treatment. After 2 years of postoperative follow up, she remained free of disease. CONCLUSIONS This patient was diagnosed as having accessory breast cancer which presented with a subcutaneous mass. As this condition is exceptionally rare but curable by early treatments, we recommend surgeons to consider potential malignancy when patients present with a subcutaneous mass.
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Affiliation(s)
| | - Mawin Vongsaisuwon
- Department of Surgery, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
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Jain AL, Mullins J, Smith JR, Valasareddy P, Miller E, Chaudhry A, Ryder J, Hare F, Ranganath H, Berry M, Robins D, Schwartzberg L, Vidal GA. Unusual recurrent metastasizing benign breast papilloma: a case report. J Med Case Rep 2020; 14:33. [PMID: 32070435 PMCID: PMC7029571 DOI: 10.1186/s13256-020-2354-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 01/23/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Papillary breast lesions may be benign, atypical, and malignant lesions. Pathological and clinical differentiation of breast papillomas can be a challenge. Unlike malignant lesions, benign breast papillomas are not classically associated with lymph node and distant metastasis. We report a unique case of a recurrent, benign breast papilloma presenting as an aggressive malignant tumor. CASE PRESENTATION Our patient was a 56-year-old postmenopausal African American woman who was followed in the breast clinic with a long history of multiple breast papillomas. She underwent multiple resections over the course of 7-9 years. After being lost to follow-up for 2 years, she once again presented with a slowly enlarging left breast mass. Subsequent imaging revealed a predominantly cystic mass in the left breast, as well as a suspicious hypermetabolic internal mammary node and a hypermetabolic nodule in the pretracheal space. Biopsy of the internal mammary node demonstrated papillary neoplasm with benign morphology and immunostains positive for estrogen receptor, progesterone receptor, and human epidermal growth factor receptor 2/Neu. Due to the clinical picture concerning for malignancy, the patient was then started on endocrine therapy with palbociclib and letrozole before surgery. She then underwent simple mastectomy and sentinel lymph node dissection with negative nodes and pathology once again revealing benign papillary neoplasm. She underwent adjuvant chest wall radiation for 6 weeks and received letrozole following completion of her radiation therapy. She was without evidence of disease 30 months after surgery. CONCLUSIONS We present an unusual case of multiple recurrent peripheral papillomas with entirely benign histologic features exhibiting malignant behavior over a protracted period of many years, with an invasion of pectoralis musculature and possibly internal mammary and mediastinal nodes. Her treatment course included multiple surgeries (ultimately mastectomy), radiation therapy, and endocrine therapy.
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Affiliation(s)
- Amit L. Jain
- Internal Medicine Division, University of Tennessee Health Science Center, 956 Court Avenue, H314, Memphis, TN 38163 USA
| | - Janice Mullins
- Division of Oncology, University of Tennessee Health Science Center, Memphis, TN USA
| | - Justin R. Smith
- Internal Medicine Division, University of Tennessee Health Science Center, 956 Court Avenue, H314, Memphis, TN 38163 USA
| | - Poojitha Valasareddy
- Division of Oncology, University of Tennessee Health Science Center, Memphis, TN USA
| | - Emily Miller
- Division of Oncology, University of Tennessee Health Science Center, Memphis, TN USA
| | - Amina Chaudhry
- Internal Medicine Division, University of Tennessee Health Science Center, 956 Court Avenue, H314, Memphis, TN 38163 USA
| | - Julie Ryder
- West Cancer Center and Research Institute, Memphis, TN USA
| | - Felicia Hare
- Division of Oncology, University of Tennessee Health Science Center, Memphis, TN USA
| | - Harsha Ranganath
- Division of Oncology, University of Tennessee Health Science Center, Memphis, TN USA
| | - Michael Berry
- West Cancer Center and Research Institute, Memphis, TN USA
| | - David Robins
- West Cancer Center and Research Institute, Memphis, TN USA
| | - Lee Schwartzberg
- Division of Oncology, University of Tennessee Health Science Center, Memphis, TN USA
- West Cancer Center and Research Institute, Memphis, TN USA
| | - Gregory A. Vidal
- Division of Oncology, University of Tennessee Health Science Center, Memphis, TN USA
- West Cancer Center and Research Institute, Memphis, TN USA
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Abstract
Ectopic breast tissue may represent the complete breast (accessory breast), glandular tissue without areola or nipple (aberrant breast tissue), or exclusively the nipple (polythelia). Localization is along the embryonic milk ridge extending from the axilla to the vulva. Only rarely, is ectopic tissue found outside of the milk ridge. Most frequently affected are the axilla, the breast itself, and its close neighbourhood. Ectopic breast tissue may rarely give rise to tumours such as fibroadenoma or carcinoma.
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Terada M, Adachi Y, Sawaki M, Hattori M, Yoshimura A, Naomi G, Kotani H, Iwase M, Kataoka A, Onishi S, Sugino K, Mori M, Horisawa N, Sasaki E, Yatabe Y, Iwata H. Occult breast cancer may originate from ectopic breast tissue present in axillary lymph nodes. Breast Cancer Res Treat 2018; 172:1-7. [PMID: 30030707 DOI: 10.1007/s10549-018-4898-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 06/26/2018] [Indexed: 01/03/2023]
Abstract
PURPOSE Occult breast cancer (OBC) is classified as a carcinoma of unknown primary, and involves axillary lymphadenopathy and is histologically consistent with metastatic breast cancer. OBC has been conventionally considered as a metastatic lymph node lesion, the origin of which is an undetectable breast tumor. Therefore, OBC patients would usually have undergone axillary lymph node dissection, and mastectomy or whole breast radiotherapy (WBRT). However, majority of OBC reports have been based on cases that were diagnosed during a period when diagnostics was still relatively primitive, and when magnetic resonance imaging was not yet a standard preoperative assessment. Therefore, there have been many false negatives in the breast based on preoperative assessment. METHODS We herein hypothesize that the origin of OBC is ectopic breast tissue present in axillary lymph nodes (ALNs). If our hypothesis is true, mastectomy and WBRT may be unnecessary for OBC patients. RESULTS Our hypothesis is supported by several findings. First, advances in radiological imaging have suggested that a primary breast tumor is absent in OBC patients. Second, proliferative breast lesions arising from ectopic breast present in ALNs have been reported. Lastly, cellular subtypes in OBC based on immunohistochemistry are of various types including ordinary breast cancer and the prognosis is not worse than stage II breast cancer. CONCLUSION It is important to distinguish between "primary" OBC in ALNs and "metastatic" OBC from micro-primary breast tumor. Further studies are required to determine if omission of mastectomy and WBRT is acceptable.
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Affiliation(s)
- Mitsuo Terada
- Department of Breast Oncology, Aichi Cancer Center Hospital, 1-1, Kanokoden, Chikusa-ku, Nagoya, Aichi, 464-8681, Japan.
| | - Yayoi Adachi
- Department of Breast Oncology, Aichi Cancer Center Hospital, 1-1, Kanokoden, Chikusa-ku, Nagoya, Aichi, 464-8681, Japan
| | - Masataka Sawaki
- Department of Breast Oncology, Aichi Cancer Center Hospital, 1-1, Kanokoden, Chikusa-ku, Nagoya, Aichi, 464-8681, Japan
| | - Masaya Hattori
- Department of Breast Oncology, Aichi Cancer Center Hospital, 1-1, Kanokoden, Chikusa-ku, Nagoya, Aichi, 464-8681, Japan
| | - Akiyo Yoshimura
- Department of Breast Oncology, Aichi Cancer Center Hospital, 1-1, Kanokoden, Chikusa-ku, Nagoya, Aichi, 464-8681, Japan
| | - Gondo Naomi
- Department of Breast Oncology, Aichi Cancer Center Hospital, 1-1, Kanokoden, Chikusa-ku, Nagoya, Aichi, 464-8681, Japan
| | - Haruru Kotani
- Department of Breast Oncology, Aichi Cancer Center Hospital, 1-1, Kanokoden, Chikusa-ku, Nagoya, Aichi, 464-8681, Japan
| | - Madoka Iwase
- Department of Breast Oncology, Aichi Cancer Center Hospital, 1-1, Kanokoden, Chikusa-ku, Nagoya, Aichi, 464-8681, Japan
| | - Ayumi Kataoka
- Department of Breast Oncology, Aichi Cancer Center Hospital, 1-1, Kanokoden, Chikusa-ku, Nagoya, Aichi, 464-8681, Japan
| | - Sakura Onishi
- Department of Breast Oncology, Aichi Cancer Center Hospital, 1-1, Kanokoden, Chikusa-ku, Nagoya, Aichi, 464-8681, Japan
| | - Kayoko Sugino
- Department of Breast Oncology, Aichi Cancer Center Hospital, 1-1, Kanokoden, Chikusa-ku, Nagoya, Aichi, 464-8681, Japan
| | - Makiko Mori
- Department of Breast Oncology, Aichi Cancer Center Hospital, 1-1, Kanokoden, Chikusa-ku, Nagoya, Aichi, 464-8681, Japan
| | - Nanae Horisawa
- Department of Breast Oncology, Aichi Cancer Center Hospital, 1-1, Kanokoden, Chikusa-ku, Nagoya, Aichi, 464-8681, Japan
| | - Eiichi Sasaki
- Department of Pathology and Molecular Diagnostics, Aichi Cancer Center Hospital, 1-1, Kanokoden, Chikusa-ku, Nagoya, Aichi, 464-8681, Japan
| | - Yasushi Yatabe
- Department of Pathology and Molecular Diagnostics, Aichi Cancer Center Hospital, 1-1, Kanokoden, Chikusa-ku, Nagoya, Aichi, 464-8681, Japan
| | - Hiroji Iwata
- Department of Breast Oncology, Aichi Cancer Center Hospital, 1-1, Kanokoden, Chikusa-ku, Nagoya, Aichi, 464-8681, Japan
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Abstract
Lymph node inclusions can occur in axillary lymph nodes, where they can mimic metastatic breast carcinoma. This article provides an overview of epithelial and nonepithelial lymph node inclusions, including mammary-type glandular inclusions, Mullerian-type glandular inclusions, squamous inclusions, mixed glandular-squamous inclusions, and nodal nevi. The discussion emphasizes the histologic and immunophenotypic features and differential diagnoses of each entity.
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Affiliation(s)
- Ashley Cimino-Mathews
- Department of Pathology, Johns Hopkins Hospital, 401 North Broadway Street, Weinberg 2242, Baltimore, MD 21287, USA.
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Cottom H, Rengabashyam B, Turton PE, Shaaban AM. Intraductal papilloma in an axillary lymph node of a patient with human immunodeficiency virus: a case report and review of the literature. J Med Case Rep 2014; 8:162. [PMID: 24884898 PMCID: PMC4046440 DOI: 10.1186/1752-1947-8-162] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Accepted: 03/31/2014] [Indexed: 12/04/2022] Open
Abstract
Introduction Inclusions of ectopic breast tissue in axillary lymph nodes are reported very infrequently and typically are only identified microscopically as an incidental finding. Furthermore the development of a benign proliferative lesion in the form of an intraductal papilloma from intranodal ectopic breast tissue is an extremely rare phenomenon with only three previous cases reported. This report describes an unusual and rare case of an intraductal papilloma arising in an axillary lymph node of a patient known to have the human immunodeficiency virus. Case presentation A 40-year-old Black African woman underwent excision of an enlarged palpable axillary lymph node. In the preceding 7 years she had received at least six separate surgical excisions to her ipsilateral breast for papillomatosis. The last surgical intervention was performed 1 year prior to presentation with an enlarged axillary lymph node. Histological examination of her axillary lymph node revealed a papillomatous proliferative epithelial lesion within an apparent encompassing duct, resembling a mammary intraductal papilloma. In the surrounding lymphoid tissue small groups of duct-like structures were additionally noted. Immunostaining with a panel of myoepithelial markers in conjunction with oestrogen receptor produced a mixed heterogeneous staining pattern in both the papillomatous lesion and the peripheral duct-like structures. This confirmed the diagnosis of a benign intraductal papilloma within an axillary lymph node, considered to have arisen from ectopic breast tissue. Conclusions This case demonstrates that intranodal ectopic breast tissue has the potential to undergo benign proliferative change albeit extremely rarely. Therefore this possibility must be considered to ensure the correct diagnosis is made. In addition, to the best of our knowledge, this is the first case report which has described recurrent intraductal papillomas and the subsequent development of an intraductal papilloma within an ipsilateral axillary lymph node, in a patient who is human immunodeficiency virus positive. There is minimal literature investigating the specific types of breast pathologies experienced by patients infected with human immunodeficiency virus and it remains unexplored as to whether human immunodeficiency virus may lead to proliferative papillomatous epithelial changes. This report considers the role of the human papillomavirus and recommends that further investigatory studies are required.
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Affiliation(s)
- Hannah Cottom
- Department of Histopathology, Leeds Teaching Hospitals NHS Trust, Leeds, UK.
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Wysokinska EM, Keeney G. Breast cancer occurring in the chest wall: rare presentation of ectopic milk line breast cancer. J Clin Oncol 2014; 32:e35-6. [PMID: 24449239 DOI: 10.1200/jco.2012.47.8958] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Khoury T, Hu Q, Liu S, Wang J. Intracystic papillary carcinoma of breast: interrelationship with in situ and invasive carcinoma and a proposal of pathogenesis: array comparative genomic hybridization study of 14 cases. Mod Pathol 2014; 27:194-203. [PMID: 23907150 PMCID: PMC4389629 DOI: 10.1038/modpathol.2013.136] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Revised: 06/03/2013] [Accepted: 06/04/2013] [Indexed: 12/22/2022]
Abstract
Classifying intracystic papillary carcinoma under invasive or in situ ductal carcinoma is still a matter of debate. The purpose of this study was to explore the genomic relationship of this tumor to its concurrent invasive ductal carcinoma and ductal carcinoma in situ using array comparative genomic hybridization. Intracystic papillary carcinoma cases were classified into three categories: pure, with concurrent ductal carcinoma in situ or with concurrent invasive ductal carcinoma. Each component was dissected using laser capture microdissection. DNA was extracted and array comparative genomic hybridization was performed. The test of difference in copy number changes among the three tumors was carried out using CGHMultiArray. Intracystic papillary carcinoma clustered with four of five concurrent ductal carcinoma in situ cases and with two of two invasive ductal carcinoma cases. Intracystic papillary carcinoma showed the highest proportions of genome copy number aberration, followed by ductal carcinoma in situ, and then by invasive ductal carcinoma (P=0.06). Comparing intracystic papillary carcinoma with invasive ductal carcinoma vs without invasive ductal carcinoma, the former had 11q22.1-23.3 loss (P=0.031) and chr5 gain (P=0.085), and was enriched with matrix metalloproteinase genes. Comparing intracystic papillary carcinoma with ductal carcinoma in situ vs without ductal carcinoma in situ, the former had gain in 5q35.3 (P=0.041), 8q24.3 (P=0.041) and 21q13.2 to 21q13.31 (P=0.011). Comparing intracystic papillary carcinoma with ductal carcinoma in situ, the latter acquired a group of genes involved in cell adhesion and motility, whereas intracystic papillary carcinoma differentially expressed genes that are involved in papillary carcinomas of other organs (thyroid and kidney). We conclude that the overall molecular change in intracystic papillary carcinoma is closer to ductal carcinoma in situ than to invasive ductal carcinoma, which may explain the indolent behavior of this tumor. We offer herein a proposal of intracystic papillary carcinoma pathogenesis through its relation to invasive ductal carcinoma and ductal carcinoma in situ.
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Affiliation(s)
- Thaer Khoury
- Department of Pathology, Roswell Park Cancer Institute, Buffalo, NY
| | - Qiang Hu
- Department of Biostatistics, Roswell Park Cancer Institute, Buffalo, NY
| | - Song Liu
- Department of Biostatistics, Roswell Park Cancer Institute, Buffalo, NY
| | - Jianmin Wang
- Department of Biostatistics, Roswell Park Cancer Institute, Buffalo, NY, Co-corresponding author: Jianmin Wang PhD Roswell Park Cancer Institute Elm & Carlton streets Buffalo, NY 14263 Tel: (716) 845-1499
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Deng LH, Lee CH. Multicentric paraspinal neuroglial heterotopia with Müllerian and renal agenesis: a variant of Mayer-Rokitansky-Küster-Hauser syndrome? Diagn Pathol 2013; 8:141. [PMID: 23968558 PMCID: PMC3849052 DOI: 10.1186/1746-1596-8-141] [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: 06/11/2013] [Accepted: 08/08/2013] [Indexed: 11/16/2022] Open
Abstract
Abstract Neuroglial heterotopia is a rare congenital anomaly that mostly involves the head and neck region. We report a female fetus with multicentric paraspinal neuroglial heterotopia in the retropharyngeal and retroperitoneal spaces, right renal agenesis, left renal hypoplasia, and Müllerian agenesis. Additional findings included bilateral preaxial polydactyly of the hands, megacystis, rectovesical fistula, and imperforate anus. The karyotype was 46, XX. This fetus had the features of Mayer-Rokitansky-Küster-Hauser (MRKH) syndrome with paraspinal neuroglial heterotopia. This is the first report of the co-occurrence of these two malformations which could share a common pathogenetic mechanism. We suggest this to be a variant MRKH syndrome. Virtual slides The virtual slide(s) for this article can be found here: http://www.diagnosticpathology.diagnomx.eu/vs/3246922721015286.
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Affiliation(s)
- Lu-Hau Deng
- Department of Pathology, Taipei Medical University-Shuang Ho Hospital, 291, Zhongzheng Road, Zhonghe District, New Taipei City 23561, Taiwan.
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Synchronous ductal carcinoma in situ of the breast and within epithelial inclusions in an ipsilateral sentinel lymph node. Hum Pathol 2012; 44:142-4. [PMID: 23089490 DOI: 10.1016/j.humpath.2012.07.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2012] [Revised: 07/10/2012] [Accepted: 07/16/2012] [Indexed: 11/22/2022]
Abstract
Epithelial inclusions in the axillary lymph nodes are very rare and have even less commonly been reported with either benign or malignant changes. We present a case of synchronous high-grade micropapillary ductal carcinoma in situ arising in the breast and in an epithelial inclusion in an ipsilateral sentinel lymph node. Despite extensive sampling, no focus of invasive carcinoma was identified. This unique case highlights the difficulty in diagnosis of metastatic disease when there is a malignant change in an epithelial inclusion in a sentinel lymph node and highlights the need for very careful histologic assessment of such lesions.
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