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Uncommon Variants of Mature T-Cell Lymphomas (MTCLs): Imaging and Histopathologic and Clinical Features with Updates from the Fourth Edition of the World Health Organization (WHO) Classification of Lymphoid Neoplasms
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An Overview of Selected Rare B-Cell Lymphoproliferative Disorders: Imaging, Histopathologic, and Clinical Features

1
Department of Radiology and Imaging Sciences, Utah University School of Medicine, Salt Lake City, UT 84123, USA
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Department of Radiodiagnosis and Intervention, Faculty of Medicine, Alexandria University, Alexandria 21566, Egypt
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Department of Medical Oncology and Nuclear Medicine, Faculty of Medicine, Alexandria University, Alexandria 21566, Egypt
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Division of Hematology and Medical Oncology, Weil Cornell Medicine, Cornell University, New York, NY 10021, USA
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Department of Pathology, Mayo Clinic, Rochester, MN 55901, USA
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Department of Diagnostic Radiology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Stefan Delorme
Cancers 2021, 13(22), 5853; https://doi.org/10.3390/cancers13225853
Received: 28 October 2021 / Revised: 18 November 2021 / Accepted: 18 November 2021 / Published: 22 November 2021
(This article belongs to the Special Issue Cancer Imaging: Current Practice and Future Perspectives)
The updated 4th edition WHO classification of lymphoid malignancies released in 2016 contains pivotal new terminology and information that is important for radiologists to understand. In spite of these updates, some lymphoproliferative disorders included in this update have been rarely discussed in the radiology literature. Many of these disorders have distinct clinical and imaging features, overlapping with more common disorders, thus causing a delay in diagnosis and management. Early diagnosis of many of these disorders is key as many of these are potentially treatable because early intervention may be lifesaving. The purpose of this manuscript is to provide guidance for radiologists regarding certain rare variants of B-cell lymphoproliferative disorders, in terms of clinical, histologic, and imaging findings, as well as to incorporate the new and updated terminology of some disorders included within the 4th edition of the WHO classification of lymphoid neoplasm.
Lymphoproliferative disorders (LPD) are conditions characterized by the uncontrolled proliferation of B or T-cell lines. They encompass a wide spectrum of abnormalities, which may be broadly classified as reactive processes or malignant diseases, such as lymphoma, based on their cellular clonality and clinical behavior. While some of these disorders are rare, they may be encountered sporadically in clinical practice, causing diagnostic dilemmas owing to overlap in their clinical and imaging features with more common disorders. The updated 4th edition WHO classification of lymphoid neoplasms was released in 2016 to incorporate the rapid clinical, pathological, molecular biology and cytogenetic advances of some of these disorders. Despite these updates, very little information is presented in the literature from the radiology perspective. The aim of this article is to familiarize radiologists and other physicians with certain rare variants of B-cell lymphoproliferative disorders with a focus on imaging features of these disorders, as well as to provide an overview of some important updates contained within the new WHO classification of lymphoid neoplasms. View Full-Text
Keywords: updates; WHO classification of hematologic malignancies; lymphoproliferative disorders; rare B-cell lymphomas; 18F-FDG PET/CT updates; WHO classification of hematologic malignancies; lymphoproliferative disorders; rare B-cell lymphomas; 18F-FDG PET/CT
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MDPI and ACS Style

Salem, A.E.; Zaki, Y.H.; El-Hussieny, G.; ElNoueam, K.I.; Shaaban, A.M.; Koppula, B.R.; Bustoros, M.; Salama, M.; Elsayes, K.M.; Morton, K.; Covington, M.F. An Overview of Selected Rare B-Cell Lymphoproliferative Disorders: Imaging, Histopathologic, and Clinical Features. Cancers 2021, 13, 5853. https://doi.org/10.3390/cancers13225853

AMA Style

Salem AE, Zaki YH, El-Hussieny G, ElNoueam KI, Shaaban AM, Koppula BR, Bustoros M, Salama M, Elsayes KM, Morton K, Covington MF. An Overview of Selected Rare B-Cell Lymphoproliferative Disorders: Imaging, Histopathologic, and Clinical Features. Cancers. 2021; 13(22):5853. https://doi.org/10.3390/cancers13225853

Chicago/Turabian Style

Salem, Ahmed E., Yehia H. Zaki, Gamal El-Hussieny, Khaled I. ElNoueam, Akram M. Shaaban, Bhasker R. Koppula, Mark Bustoros, Mohamed Salama, Khaled M. Elsayes, Kathryn Morton, and Matthew F. Covington. 2021. "An Overview of Selected Rare B-Cell Lymphoproliferative Disorders: Imaging, Histopathologic, and Clinical Features" Cancers 13, no. 22: 5853. https://doi.org/10.3390/cancers13225853

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