Cutaneous Lymphomas An Issue Of Surgical Pathology Clinics

Knowledge of cutaneous lymphomas has been growing significantly as a result of important discoveries in immunology, molecular biology, and immunohistochemistry. Improved clinical pathologic correlation and follow-up data, as well as the synergistic collaboration among different lymphoma registries and specialists from several academic medical centers have greatly contributed to the understanding of the difficult field of cutaneous lymphoproliferative disorders. While these advances have increased understanding of skin lymphomas, they have also produced an extensive and sometimes confusing litany of articles, studies, and classification schemes. This issue on Cutaneous Lymphomas in Surgical Pathology Clinics provides an organized and updated review of this challenging topic by leading experts. It bridges critical knowledge gaps in the diagnosis of cutaneous lymphomas. Sezary Syndrome, Mycosis Fungoides and variants are presented along with B-cell, CD30, lymphoproliferative disorders among others. In addition to multiple clinical and microscopic images, tables and algorithms are presented to aid in diagnosis and staging. Beyond its usefulness to general pathologists, dermatopathologists, and hematopathologists, this information is intended to be helpful for dermatologists, hematologists/oncologists, fellows, and residents.

This issue of Surgical Pathology Clinics, edited by Dr. Thomas Brenn, will discuss the latest updates in Dermatopathology. Topics covered in this issue include, but are not limited to EBV-related cutaneous lymphoproliferative disease; CD30-positive lymphoproliferative disorders of the skin; Spitz tumors; Atypical fibroxanthoma; Cutaneous malignant peripheral nerve sheath tumour; Sebaceous Neoplasms; Sweat gland tumors; and Cutaneous immunobullous disorders, among others.

In this issue of Surgical Pathology Clinics, guest editor Michael T. Tetzlaff brings his considerable expertise to the topic of Dermatopathology. Top experts in the field cover key topics such as Mucosal Melanoma Molecular, Vasculitis, Nail Pathology, and more. Provides in-depth, clinical reviews on Dermatopathology, providing actionable insights for clinical practice. Presents the latest information on this timely, focused topic under the leadership of experienced editors in the field; Authors synthesize and distill the latest research and practice guidelines to create these timely topic-based reviews. Contains 14 relevant, practice-oriented topics including PRAME immunohistochemical studies as an ancillary diagnostic test for difficult melanocytic lesions; Cutaneous Toxicities in the setting of immune checkpoint blockade: Oncodermatopathology; Update on Molecular genetic alterations of cutaneous adnexal neoplasms; and more.

The Editor of this publication is Dr Elise Olsen, Director of the Duke University Cutaneous Lymphoma Research and Treatment Center and professor of Dermatology and Oncology. In 2014, cutaneous lymphoma (CL) is considered a chronic, non-life threatening disease since the majority of patients are diagnosed at early stage, though progression to later stages does result in death from the disease. This issue covers T-cell and B-cell lymphomas, with content emphasis on Mycoides fungoides and Sezary syndrome, the two most common clinically encountered subtypes of CL. Pharmaceutical treatment of the disease is a part of each article and the issue uses the following Treatment outline: Mechanisms of action - Pharmacokinetics - Typical dosing - Response to therapy - Adverse effects - and Pearls to help management using the agent under discussion. Beyond Dermatologists, specialists who would find the information useful are Cancer specialists, Hematologists/Oncologists, Physician Assistants, Nurse Practitioners, and Pharmacists. Some of the topics, written by the word's top experts in this disease, are: Overview of primary cutaneous lymphomas and the applicable staging and classification; Pathologic diagnosis of cutaneous lymphomas; in the section on Mycosis Fungoides and Sezary Syndrome, the clinician and researcher will find such topics as Skin directed medications; Phototherapy; Systemic retinoids; Interferons; HDAC inhibiotrs, Methotrexate and praletexate, along with other chemotherapeutic agents. Also, Bone marrow transplant; Diagnosis and management of CD30+ Lymphoproliferative disorders; and Diagnosis and management of primary cutaneous B cell lymphomas.

This issue of Surgical Pathology Clinics, guest edited by Mina L. Xu, will focus on Hematopathology. Topics include, but are not limited to, EBV associated Lymphoproliferative Disorders; Castleman lymphadenopathy; Early events in lymphoid neoplasms; Changes in cutaneous T-cell lymphoma diagnostic and prognostic considerations; Bone Pathology for Hematopathologists; Acute Leukemias of Ambiguous Lineage; Optimal minimal residual disease testing for AML; Defining boundaries between MDS, MPN and MDS/MPN; Updates in pediatric lymphomas; New entities in gastrointestinal lymphoproliferative disorders; Prognostication in Diffuse Large B-cell Lymphomas; Histiocytic Neoplasms commonly encountered by hematopathologists; and Challenges in the diagnosis of grey zone lymphomas.

In this issue, guest editors bring their considerable expertise to this important topic. Contains 15 practice-oriented topics including new entities and challenges in pediatric hematopathology; IgG4-related lymphadenopathy and lymphoproliferative disorders; the changing landscape of follicular lymphoma: new variants and related entities; breast implant-associated lymphomas; controversies in splenic histiocytic, dendritic, and stromal cell lesions; and more. Provides in-depth clinical reviews on hematopathology, offering actionable insights for clinical practice. Presents the latest information on this timely, focused topic under the leadership of experienced editors in the field. Authors synthesize and distill the latest research and practice guidelines to create clinically significant, topic-based reviews.

This atlas contains excellent clinical and histopathologic images and text of each of the types of cutaneous lymphoma (around 25 entities). It is the first go-to text for those who are considering a diagnosis of cutaneous lymphoma in their differential diagnosis. The text also includes diagnostic mimics of lymphoma and differential diagnosis tables and algorithms. The target audience is general practitioners, dermatologists, pathologists and students, residents and fellows. The diagnosis of lymphoma in the skin is confounded by the myriad of disorders that can mimic lymphoma clinically and histopathologically and by inconsistencies in the diagnostic classification that have only recently been resolved. In the last decade the European Organization for Research and Treatment of Cancer (EORTC) Cutaneous Lymphoma Group and the World Health Organization (WHO) Collaborated in a series of workshops and consensus meetings to arrive at a definitive classification scheme for cutaneous lymphoma. Unfortunately, the publication by the WHO that described this schema included all lymphomas and has the skin tumors scattered throughout the volume. There is currently no go to text for those who are considering a diagnosis of cutaneous lymphoma in their differential diagnosis. As a result there continues to be confusion about the diagnosis of cutaneous lymphoma, although this classification scheme was published in 2008.

Topics in Hematopoietic Neoplasms: Controversies in Diagnosis and Classification include: ABC vs GC subtyping of diffuse large B cell lymphoma-Does it matter?; Clonal link between malignant lymphoma and histiocytic tumors; Diagnostic criteria for grey zone lymphoma: Are there any?; Diagnostic criteria for primary cutaneous B cell lymphoma; Distinguishing reactive and leukemic large granular lymphocyte proliferations; Differential diagnosis of erythroleukemia; Early pre-T ALL versus MPAL: Diagnostic criteria; Myeloid neoplasms with inv(3) or t(3;3); Update on classification and prognosis in myelodysplastic syndrome; Approach to atypical immunophenotypes in Hodgkin lymphoma; Blastic plasmacytoid dendritic cell tumor: How do you distinguish it from acute myeloid leukemia?; The differential diagnosis of eosinophilia in neoplastic hematopathology; Transformation in myeloproliferative neoplasms; and Challenges in consolidated reporting of hematopoietic neoplasms. This publication is an extremely useful and practical source for pathologists working with this spectrum of disorders. As with all publications in this series, Differential Diagnosis is the main focus of discussion. Staging, Diagnosis, Prognosis, and summaries of Pitfalls in working with these pathologies are presented along with ample figures.

This book offers a unique insight into the world of cutaneous lymphomas. In addition to the case description it gives the clinical, histological, and in most cases also the phenotypical features and the results of molecular techniques. A commentary puts the observations into the context of cutaneous lymphomas. High quality pictures accompany this exceptional collection of rare and unusual cases. These will interest dermatologists, oncologists, pathologists and hematologists.

This issue of Surgical Pathology Clinics is devoted to Soft Tissue Tumors, the first in this series was presented in 2011. This issue addresses the most difficult diagnostic challenges and focuses on differential diagnosis in soft tissue tumors. Each presentation is accompanied by abundant histologic slides to display the diagnostic differences. Additionally, authors selected two to five diagnoses they find can be particularly difficult, with an emphasis on how to approach such lesions on biopsy samples where relevant and the role of ancillary studies. Topics include coverage of diagnostically challenging: Vascular lesions; Retroperitoneal “Fatty tumors of adults; Smooth muscle neoplasms; Chondro-osseous lesions of soft tissue; Pediatric tumors; Epithelioid tumors; Spindle cell neoplasms of the retroperitoneum; and Peripheral nerve sheath tumors. Also presented are: Non-mesenchymal mimics of benign and malignant soft tissue tumors; Soft tissue tumors with overlapping molecular findings; Recently characterized soft tissue tumors; Benign mimics of sarcoma; Advances in molecular methods in the analysis of soft tissue tumors and therapeutic implications; and Myoepithelial tumors: an update. Leona Doyle and Karen Fritchie lead this issue of experts in soft tissue pathology.