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Baraban E, Thompson ED, Matoso A, Hruban RH, Argani P. Benign Islet Cells Within Peripancreatic Lymph Nodes: A Potential Diagnostic Pitfall. Am J Surg Pathol 2024; 48:834-838. [PMID: 38722694 DOI: 10.1097/pas.0000000000002244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
The presence of epithelial cells within lymph node parenchyma is typically indicative of a metastatic malignancy. However, there are rare instances in which non-neoplastic epithelial or epithelioid cells may be found within lymph nodes, either due to aberrant embryologic migration, mechanical displacement, or physiological trafficking. These can potentially lead to serious potential diagnostic pitfalls, as when such situations are encountered by surgical pathologists, there is substantial risk of overdiagnosing these as metastatic malignancy. Herein, we describe 2 cases of benign pancreatic islet cells within peripancreatic lymph nodes, and underscore the potential for misdiagnosis of this phenomenon as foci of metastatic well-differentiated neuroendocrine tumor. The benign nature of these intranodal islet cells was supported by: (1) the absence of a well-differentiated neuroendocrine tumor in the entirely submitted concomitant pancreatic resection specimen and (2) the presence of an admixture of insulin and glucagon expressing cells by immunohistochemistry in a distribution characteristic of non-neoplastic pancreatic islets. Both cases were incidental microscopic findings in pancreatic resections for intraductal papillary mucinous neoplasms that were previously biopsied and showed associated microscopic areas of fibrosis and chronic pancreatitis and thus this phenomenon may be related to mechanical displacement from prior injury and/or biopsy.
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Affiliation(s)
| | | | | | - Ralph H Hruban
- Departments of Pathology
- Oncology, The Sol Goldman Pancreatic Cancer Research Center, Johns Hopkins Hospital, Baltimore, MD
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Sonam F, Komforti MK, Jakub JW, Cornell LF, Robinson KA. Rare Presentation of Papillary Carcinoma Within a Sentinel Lymph Node in a Patient With Ductal Carcinoma in Situ of the Breast: A Challenging but Useful Case Report Discussion Regarding Displacement or True Metastasis? Int J Surg Pathol 2024:10668969241235316. [PMID: 38500348 DOI: 10.1177/10668969241235316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
Papillary carcinoma of the breast is a rare histologic subtype of invasive breast cancer. In contrast, ductal carcinoma in situ (DCIS) is a noninvasive, nonobligate precursor to invasive mammary carcinoma, confined within the terminal duct lobular unit of the breast and surrounded by an intact myoepithelial cell layer at the stromal/epithelial interface. We present an unusual case in which a patient with only DCIS of the breast exhibited papillary carcinoma within a sentinel lymph node, leading to questions about the origin of the lymph node lesion-whether it represents a true metastasis or iatrogenic displacement during diagnostic procedures. This case underscores the diagnostic challenges and clinical implications associated with such rare presentations.
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Affiliation(s)
- Fnu Sonam
- Department of Laboratory Medicine and Pathology, Mayo Clinic Research in Florida, Jacksonville, FL, USA
| | - Miglena K Komforti
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Jacksonville, FL, USA
| | - James W Jakub
- Department of Oncology, Mayo Clinic in Florida Radiation, Jacksonville, FL, USA
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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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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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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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Stolnicu S, Preda O, Kinga S, Marian C, Nicolau R, Andrei S, Nicolae A, Nogales FF. Florid, Papillary Endosalpingiosis of the Axillary Lymph Nodes. Breast J 2011; 17:268-72. [DOI: 10.1111/j.1524-4741.2011.01081.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Hardie M, Sterrett G, Snowball B, Wood BA. Transported papillary lesions of the breast in axillary lymph nodes: a report of two cases. Pathology 2010; 42:686-8. [PMID: 21080883 DOI: 10.3109/00313025.2010.523690] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Dzodic R, Stanojevic B, Saenko V, Nakashima M, Markovic I, Pupic G, Buta M, Inic M, Rogounovitch T, Yamashita S. Intraductal papilloma of ectopic breast tissue in axillary lymph node of a patient with a previous intraductal papilloma of ipsilateral breast: a case report and review of the literature. Diagn Pathol 2010; 5:17. [PMID: 20222992 PMCID: PMC2841131 DOI: 10.1186/1746-1596-5-17] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2010] [Accepted: 03/12/2010] [Indexed: 11/16/2022] Open
Abstract
The presence of ectopic breast tissue in axillary lymph nodes (ALN) is a benign condition that must be differentiated from primary or metastatic carcinoma. Here we report a patient who underwent excision of enlarged ALN 10 years after she had received surgical treatment of ipsilateral breast for an intracystic intraductal papilloma (IDP). Histological examination of the removed ALN revealed that the proliferative lesion consisted of papillary and tubular structures lined by luminal cuboidal cells and a distinct outer layer of myoepithelial cells resembling IDP of the breast. Immunostaining with a set of immunohistochemical markers including AE/AE3, alpha-smooth muscle actin and p63 in combination with estrogen and progesterone receptors confirmed the diagnosis of ectopic IDP. This case shows that even though benign proliferative change in ectopic breast tissue is an extremely rare phenomenon, this possibility should be taken into account for correct diagnosis.
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Affiliation(s)
- Radan Dzodic
- Institute for Oncology and Radiology of Serbia, 14 Pasterova, Belgrade 11000, Serbia
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Nakaguro M, Suzuki Y, Ichihara S, Kobayashi TK, Ono K. Epithelial inclusion cyst arising in an intramammary lymph node: case report with cytologic findings. Diagn Cytopathol 2009; 37:199-202. [PMID: 19177497 DOI: 10.1002/dc.20997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The occurrence of epithelial inclusion cysts (EIC) in axillary lymph nodes is a rare but well recognized entity, arising either from direct implantation or from embryonal rests. Theoretically, EIC can occur in intramammary lymph nodes, but there has been only one prior report of such a lesion. Here, we describe a case of an EIC arising in an intramammary lymph node of a 37-year-old woman. This report focuses on the FNA cytologic features of this lesion and its differential diagnoses. On FNA, the EIC arising in an intramammary lymph node was characterized by mature lymphocytes, squamous epithelial cells, and keratinizing material. The presence of squamous cells can lead to the erroneous diagnosis of more common breast lesions, such as squamous cell carcinoma or metaplastic carcinoma. Contrary to these more sinister diagnoses, EIC arising in an intramammary lymph node is a benign condition. As this rare lesion sometimes mimics a neoplasm both clinically and radiographically, awareness of this entity is important to prevent over treatment.
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Affiliation(s)
- Masato Nakaguro
- Department of Pathology, Tosei General Hospital, Seto, Aichi, Japan
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