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Author Justin A Bishop

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Nonkeratinizing Squamous Cell Carcinoma of the Sinonasal Tract With DEK-AFF2: Further Solidifying an Emerging Entity.

Justin A Bishop, Jeffrey Gagan, Claire Paterson, Douglas McLellan, Ann Sandison,

Am J Surg Pathol (The American journal of surgical pathology)
[2021, 45(5):718-720]

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Emerging Entities and New Diagnostic Markers for Head and Neck Soft Tissue and Bone Tumors.

Alessandro Franchi, Lester D R Thompson, Juan C Hernandez-Prera, Abbas Agaimy, Michelle D Williams, Lauge H Mikkelsen, Justin A Bishop, Stefan M Willems, Henrik Hellquist, Alfio Ferlito,

Bone and soft tissue tumors of the head and neck are relatively uncommon tumors that often represent a diagnostic challenge because of the wide range of entities that must be considered in the differential diagnosis. Over the past few years, classification of bone and soft tissue tumors has evolved primarily ... Read more >>

Adv Anat Pathol (Advances in anatomic pathology)
[2021, 28(3):139-149]

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High-grade Transformation/Dedifferentiation in Salivary Gland Carcinomas: Occurrence Across Subtypes and Clinical Significance.

Alena Skalova, Ilmo Leivo, Henrik Hellquist, Abbas Agaimy, Roderick H W Simpson, Göran Stenman, Vincent Vander Poorten, Justin A Bishop, Alessandro Franchi, Juan C Hernandez-Prera, David Slouka, Stefan M Willems, Kerry D Olsen, Alfio Ferlito,

High-grade transformation (HGT) or dedifferentiation has been described in a variety of salivary gland carcinomas, including acinic cell carcinoma, secretory carcinoma, adenoid cystic carcinoma, epithelial-myoepithelial carcinoma, polymorphous adenocarcinoma, low-grade mucoepidermoid carcinoma, and hyalinizing clear cell carcinoma. High-grade (HG) transformed tumors are composed of a conventional low-grade component characterized by specific ... Read more >>

Adv Anat Pathol (Advances in anatomic pathology)
[2021, 28(3):107-118]

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The Myoepithelial Cells of Salivary Intercalated Duct-type Intraductal Carcinoma Are Neoplastic: A Study Using Combined Whole-slide Imaging, Immunofluorescence, and RET Fluorescence In Situ Hybridization.

Justin A Bishop, Lisa M Rooper, Ankur R Sangoi, Jeffrey Gagan, Lester D R Thompson, Hiroshi Inagaki,

Intraductal carcinoma (IDC) is a salivary gland tumor currently believed to be analogous to breast ductal carcinoma in situ, consisting of a complex neoplastic epithelial proliferation surrounded by a continuous layer of myoepithelial cells presumed to be native and non-neoplastic. Recent molecular insights have shown that there are at least ... Read more >>

Am J Surg Pathol (The American journal of surgical pathology)
[2021, 45(4):507-515]

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MYB RNA In Situ Hybridization Facilitates Sensitive and Specific Diagnosis of Adenoid Cystic Carcinoma Regardless of Translocation Status.

Lisa M Rooper, Kara A Lombardo, Bahram R Oliai, Patrick K Ha, Justin A Bishop,

Adenoid cystic carcinoma (AdCC) can demonstrate histologic and immunohistochemical (IHC) overlap with a wide range of salivary and nonsalivary tumors, especially in small biopsy specimens. While MYB fluorescence in situ hybridization (FISH) frequently is used to confirm the diagnosis of AdCC, the pathognomonic MYB-NFIB fusion is only present in 40% ... Read more >>

Am J Surg Pathol (The American journal of surgical pathology)
[2021, 45(4):488-497]

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Computerized tumor multinucleation index (MuNI) is prognostic in p16+ oropharyngeal carcinoma.

Can F Koyuncu, Cheng Lu, Kaustav Bera, Zelin Zhang, Jun Xu, Paula Toro, German Corredor, Deborah Chute, Pingfu Fu, Wade L Thorstad, F Faraji, Justin A Bishop, Mitra Mehrad, Patricia D Castro, Andrew G Sikora, Lester Dr Thompson, R D Chernock, Krystle A Lang Kuhs, Jingqin Luo, Vlad Sandulache, David J Adelstein, Shlomo Koyfman, James S Lewis, Anant Madabhushi,

BACKGROUNDPatients with p16+ oropharyngeal squamous cell carcinoma (OPSCC) are potentially cured with definitive treatment. However, there are currently no reliable biomarkers of treatment failure for p16+ OPSCC. Pathologist-based visual assessment of tumor cell multinucleation (MN) has been shown to be independently prognostic of disease-free survival (DFS) in p16+ OPSCC. However, ... Read more >>

J Clin Invest (The Journal of clinical investigation)
[2021, 131(8):]

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Updates on "Under the Radar" Salivary Gland Tumors.

Justin A Bishop,

Surg Pathol Clin (Surgical pathology clinics)
[2021, 14(1):xi]

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Salivary Mucinous Adenocarcinoma Is a Histologically Diverse Single Entity With Recurrent AKT1 E17K Mutations: Clinicopathologic and Molecular Characterization With Proposal for a Unified Classification.

Lisa M Rooper, Prokopios P Argyris, Lester D R Thompson, Jeffrey Gagan, William H Westra, Richard C Jordan, Ioannis G Koutlas, Justin A Bishop,

Mucin-producing salivary adenocarcinomas were historically divided into separate colloid carcinoma, papillary cystadenocarcinoma, and signet ring cell carcinoma diagnoses based on histologic pattern, but have recently been grouped together in the adenocarcinoma not otherwise specified category. It is currently unclear if these tumors represent 1 or more distinct entities and how ... Read more >>

Am J Surg Pathol (The American journal of surgical pathology)
[2021, :]

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Sclerosing Polycystic Adenoma.

Justin A Bishop, Lester D R Thompson,

Sclerosing polycystic adenoma (SPA) is the more appropriate name for sclerosing polycystic adenosis. SPA is an uncommon salivary gland lesion with a constellation of unusual histologic findings that were originally interpreted as analogous to breast fibrocystic changes. The histologic findings in SPA include fibrosis, cystic alterations, apocrine metaplasia, and proliferations ... Read more >>

Surg Pathol Clin (Surgical pathology clinics)
[2021, 14(1):17-24]

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SWI/SNF-deficient head and neck neoplasms: An overview.

Abbas Agaimy, Justin A Bishop,

With wide-spread use of next generation sequencing tools in surgical pathology, a variety of neoplasms have been increasingly recognized to be associated with specific recurrent defining genetic abnormalities. This has led to recognition of new genetically defined entities and refinements of preexisting heterogeneous neoplastic categories. Among these, neoplasms associated with ... Read more >>

Semin Diagn Pathol (Seminars in diagnostic pathology)
[2021, :]

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Sialadenoma Papilliferum.

Min-Shu Hsieh, Justin A Bishop, Julia Yu Fong Chang,

Sialadenoma papilliferum (SP) is a rare, benign salivary gland neoplasm sharing similar histopathologic features and harboring the same genetic alterations, BRAF V600E or HRAS mutations, with syringocystadenoma papilliferum. SP most commonly occurs in the hard palate and in older adults. Clinically, SP is most likely to be diagnosed as a ... Read more >>

Surg Pathol Clin (Surgical pathology clinics)
[2021, 14(1):43-51]

Cited: 1 time

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SS18 Break-Apart Fluorescence In Situ Hybridization is a Practical and Effective Method for Diagnosing Microsecretory Adenocarcinoma of Salivary Glands.

Justin A Bishop, Prasad Koduru, Brandon M Veremis, Bahram R Oliai, Ilan Weinreb, Lisa M Rooper, Brendan C Dickson, Elizabeth G Demicco,

Molecular analysis has allowed for refinement of salivary gland tumor classification and, in some cases, the recognition of entirely new tumor types. Microsecretory adenocarcinoma (MSA) is a salivary gland tumor described in 2019 characterized by microcystic growth, bland cytomorphology, luminal secretions, fibromyxoid stroma, and S100/p63 positivity with negative p40. Most ... Read more >>

Head Neck Pathol (Head and neck pathology)
[2021, :]

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Primary and Secondary/ Metastatic Salivary Duct Carcinoma Presenting within the Sinonasal Tract.

Abbas Agaimy, Sarina K Mueller, Justin A Bishop, Simion I Chiosea,

Traditionally, sinonasal adenocarcinomas have been subdivided into intestinal (ITAC) and non-intestinal (non-ITAC) categories. The latter encompasses salivary-type adenocarcinomas originating from the seromucinous glands of the sinonasal mucosa and non-salivary adenocarcinomas. The non-salivary adenocarcinoma category is further subdivided into low-and high-grade variants. Among salivary-type sinonasal adenocarcinomas, tumors recapitulating salivary duct carcinoma ... Read more >>

Head Neck Pathol (Head and neck pathology)
[2021, :]

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The Decline of Salivary Adenocarcinoma Not Otherwise Specified as a Tumor Entity: Reclassification Using Contemporary Immunohistochemical Profiling and Diagnostic Criteria.

Lisa M Rooper, Mena Mansour, Raluca Yonescu, Bahram R Oliai, Justin A Bishop, William H Westra,

The classification of salivary gland carcinomas has become increasingly specific over the last decade with the definition of new tumor types, documentation of novel molecular and immunohistochemical findings, and development of more refined diagnostic criteria. In this setting, it is unclear how many salivary tumors still cannot be easily categorized-and ... Read more >>

Am J Surg Pathol (The American journal of surgical pathology)
[2020, :]

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Oncocytic intraductal carcinoma of salivary glands: a distinct variant with TRIM33-RET fusions and BRAF V600E mutations.

Justin A Bishop, Masato Nakaguro, Rumeal D Whaley, Kanako Ogura, Hiroshi Imai, Israa Laklouk, William C Faquin, Peter M Sadow, Jeffrey Gagan, Toshitaka Nagao,

<h4>Aims</h4>Salivary gland intraductal carcinoma (IDC) is a complex ductal neoplasm surrounded by a layer of myoepithelial cells. Recent insights have shown that there are three different types: intercalated duct-like, with frequent NCOA4-RET fusions; apocrine, with salivary duct carcinoma-like mutations; and mixed intercalated duct-like/apocrine, with RET fusions, including TRIM27-RET. In addition, ... Read more >>

Histopathology (Histopathology)
[2020, :]

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Corrigendum to Malignant teratomas of the thyroid gland: clinico-radiologic and cytomorphologic features of a rare entity J Am Soc Cytopathol. 2020 Jul-Aug;9(4):221-231.

Daniel L Miller, Lester D R Thompson, Justin A Bishop, Lisa M Rooper, Syed Z Ali,

J Am Soc Cytopathol (Journal of the American Society of Cytopathology)
[2020, 9(6):607-608]

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Recurrent Loss of SMARCA4 in Sinonasal Teratocarcinosarcoma.

Lisa M Rooper, Nasir Uddin, Jeffrey Gagan, Lodewijk A A Brosens, Kelly R Magliocca, Mark A Edgar, Lester D R Thompson, Abbas Agaimy, Justin A Bishop,

Molecular analysis has reshaped the landscape of high grade sinonasal tumors by defining novel entities and identifying recurrent mutations in established tumor types. However, sinonasal teratocarcinosarcoma (TCS), a rare and aggressive tumor with intermixed teratomatous, carcinomatous, and sarcomatous elements, remains poorly understood. The multiphenotypic differentiation of TCS has engendered persistent ... Read more >>

Am J Surg Pathol (The American journal of surgical pathology)
[2020, 44(10):1331-1339]

Cited: 1 time

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NUT Carcinoma in a Patient with Unusually Long Survival and False Negative FISH Results.

Anne C McLean-Holden, Samantha A Moore, Jeffrey Gagan, Christopher A French, David Sher, John M Truelson, Justin A Bishop,

Nuclear protein in testis (NUT) carcinoma is a rare and highly aggressive epithelial malignancy defined by rearrangement of the NUTM1 gene on chromosome 15q14. Histologically, NUT carcinoma is an undifferentiated carcinoma formed by sheets and nests of primitive and monotonous "round blue cells" with foci of abrupt keratinization in a ... Read more >>

Head Neck Pathol (Head and neck pathology)
[2020, :]

Cited: 1 time

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Low Molecular Weight Cytokeratin Immunohistochemistry Reveals That Most Salivary Gland Warthin Tumors and Lymphadenomas Arise in Intraparotid Lymph Nodes.

Anne C McLean-Holden, Justin A Bishop,

The nature of the lymphoid stromal component in Warthin tumor and lymphadenoma of the parotid gland has been a controversial topic in salivary gland pathology for decades. Two theories exist: first, that these tumors arise from salivary gland inclusions within intraparotid lymph nodes; and second, that they arise within salivary ... Read more >>

Head Neck Pathol (Head and neck pathology)
[2020, :]

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p16 Immunoexpression in sinonasal and nasopharyngeal adenoid cystic carcinomas: a potential pitfall in ruling out HPV-related multiphenotypic sinonasal carcinoma.

Vijay M Antony, Aanchal Kakkar, Kapil Sikka, Alok Thakar, Suryanarayan V S Deo, Justin A Bishop, Deepali Jain,

<h4>Aims</h4>Adenoid cystic carcinoma (AdCC) is frequent in the sinonasal region. The recently described human papilloma virus (HPV)-related multiphenotypic sinonasal carcinoma (HMSC) histopathologically resembles solid AdCC, but has a better outcome. Thus, clinical and pathogenetic differences between HMSC and sinonasal AdCC necessitate their distinction. We conducted this study to assess p16 ... Read more >>

Histopathology (Histopathology)
[2020, 77(6):989-993]

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Immunohistochemistry surrogates for molecular alterations: A new paradigm in salivary gland tumor cytopathology?

Justin A Bishop,

Cancer Cytopathol (Cancer cytopathology)
[2021, 129(2):102-103]

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Additional Surgery for Occult Risk Factors After Lobectomy in Solitary Thyroid Nodules is Predicted by Cytopathology Classification and Tumor Size.

Andrew Flagg, Lisa Rooper, Sheila Sheth, Mohammad Shaear, Prasanna Santhanam, Jason Prescott, Matt T Olson, Justin A Bishop, Jennifer S Mammen,

<h4>Objective</h4>Clinical practice for differentiated thyroid cancer is moving towards lobectomy rather than total thyroidectomy in patients at low risk of recurrence. However, recurrence risk assessment depends on post-operative findings, while the surgical decision is based on preoperative factors. We determined the preoperative predictors of occult higher-risk pathology and rates of ... Read more >>

Endocr Pract (Endocrine practice : official journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists)
[2020, 26(7):754-760]

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Salivary Intraductal Carcinoma Arising within Intraparotid Lymph Node: A Report of 4 Cases with Identification of a Novel STRN-ALK Fusion.

Lisa M Rooper, Lester D R Thompson, Jeffrey Gagan, Bahram R Oliai, Ilan Weinreb, Justin A Bishop,

Intraductal carcinoma (IDC) is a rare salivary gland tumor that is considered analogous to ductal carcinoma in-situ of the breast, demonstrating a complex neoplastic epithelial proliferation surrounded by a continuous layer of presumed non-neoplastic myoepithelial cells. It is subcategorized into intercalated duct, apocrine, and hybrid subtypes based on morphologic and ... Read more >>

Head Neck Pathol (Head and neck pathology)
[2021, 15(1):179-185]

Cited: 1 time

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Head and Neck Mesenchymal Neoplasms With GLI1 Gene Alterations: A Pathologic Entity With Distinct Histologic Features and Potential for Distant Metastasis.

Bin Xu, Koping Chang, Andrew L Folpe, Yu-Chien Kao, Shiuan-Li Wey, Hsuan-Ying Huang, Anthony J Gill, Lisa Rooper, Justin A Bishop, Brendan C Dickson, Jen-Chieh Lee, Cristina R Antonescu,

Soft tissue tumors with GLI1 gene fusions or amplifications have been recently described as a unique pathologic entity with an established risk of malignancy. We herein expand these findings by investigating a cohort of 11 head and neck lesions with GLI1 alterations, including 8 from the tongue, for their clinicopathologic ... Read more >>

Am J Surg Pathol (The American journal of surgical pathology)
[2020, 44(6):729-737]

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HPV-related carcinoma of the oropharynx: challenges on small biopsy specimens.

Doreen Palsgrove, Justin A Bishop,

Human papillomavirus (HPV)-related oropharyngeal carcinoma can morphologically mimic many processes from benign to malignant and lead pathologists to incorrectly diagnose them and/or use inappropriate diagnostic terminology. Recognition of HPV-related oropharyngeal carcinoma and its variants is critical for appropriate prognostic and therapeutic considerations in small biopsy material. Various pitfalls in diagnosing ... Read more >>

J Am Soc Cytopathol (Journal of the American Society of Cytopathology)
[2020, 9(5):359-368]

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