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Aran BM, Burton R, High WA, Gru AA. Null T-cell phenotype mycosis fungoides with aberrant CD20 and CD56 expression: A diagnostic dilemma. J Cutan Pathol 2024; 51:614-617. [PMID: 38725374 DOI: 10.1111/cup.14643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 04/23/2024] [Accepted: 04/30/2024] [Indexed: 07/09/2024]
Abstract
Mycosis fungoides (MF) represents the most common type of primary cutaneous T-cell lymphoma. Recognition of MF variants with divergent immunophenotypes is important for accurate diagnosis and appropriate management, as they can be confused with other lymphoma subtypes. We present a case of a 49-year-old male previously diagnosed with a cutaneous lymphoproliferative disorder with an unusual NK/T-cell phenotype. He presented with a 10-year history of pelvic girdle rash involving the right hip and upper thigh. The lesions were characterized as atrophic patches concentrated in sun-protected areas and involving 10% of the body surface area. Shave biopsies revealed an atypical epidermotropic infiltrate composed of hyperchromatic small to medium-sized lymphocytes with perinuclear halos and "tagging" along the dermal-epidermal junction. The immunophenotype was unusual in that the neoplastic lymphocytes showed complete loss of pan T-cell antigens along with expression of CD56, cytotoxic markers, and weak CD20. All other B-cell markers were negative. The combination of clinical findings, in addition to the histopathologic and immunophenotypic profile, were diagnostic of null T-cell phenotype MF with aberrant expression of CD56 and CD20. Null T-cell phenotype MF is very uncommon, can be diagnostically challenging, and can mislead the diagnosis of aggressive lymphoma subtypes.
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Affiliation(s)
- Brenna M Aran
- University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Regina Burton
- Department of Pathology, University of Virginia, Charlottesville, Virginia, USA
| | - Whitney A High
- Department of Pathology, University of Colorado, Denver, Colorado, USA
| | - Alejandro A Gru
- Department of Dermatology, Columbia University, New York, New York, USA
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Hodak E, Geskin L, Guenova E, Ortiz-Romero PL, Willemze R, Zheng J, Cowan R, Foss F, Mangas C, Querfeld C. Real-Life Barriers to Diagnosis of Early Mycosis Fungoides: An International Expert Panel Discussion. Am J Clin Dermatol 2023; 24:5-14. [PMID: 36399227 PMCID: PMC9673193 DOI: 10.1007/s40257-022-00732-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/19/2022] [Indexed: 11/19/2022]
Abstract
Mycosis fungoides (MF) is a rare, primary cutaneous T-cell lymphoma that is challenging to diagnose due to its heterogeneous clinical presentation and complex histology. The subtlety of the initial clinical appearance of MF can result in diagnostic delays and hesitancy to refer suspected cases to specialist clinics. An unmet need remains for greater awareness and education. Therefore, an international expert panel of dermatologists, oncologists, hematologists, and dermatopathologists convened to discuss and identify barriers to early and accurate MF diagnosis that could guide clinicians toward making a correct diagnosis. Confirmation of MF requires accurate assessment of symptoms and clinical signs, and subsequent correlation with dermatopathological findings. This review summarizes the expert panel's guidance, based on the literature and real-life experience, for dermatologists to help include MF in their list of differential diagnoses, along with simple clinical and histopathologic checklists that may help clinicians to suspect and identify potential MF lesions and reduce diagnostic delays.
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Affiliation(s)
- Emmilia Hodak
- Division of Dermatology, Rabin Medical Center, Beilinson Hospital, Tel Aviv University, 39 Jabotinsky Street, Petah Tiqva, 49100, Tel Aviv, Israel.
| | - Larisa Geskin
- Columbia University Medical Center, Columbia University, New York, NY, USA
| | - Emmanuella Guenova
- University Hospital Lausanne (CHUV) and Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
| | - Pablo L Ortiz-Romero
- Department of Dermatology, Hospital 12 de Octubre, Institute i+12, CIBERONC, Medical School, University Complutense, Madrid, Spain
| | - Rein Willemze
- Leiden University Medical Center, Leiden, The Netherlands
| | - Jie Zheng
- Ruijin Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Richard Cowan
- Christie Hospital, The Christie School of Oncology, Manchester, UK
| | - Francine Foss
- Yale Cancer Center, Yale School of Medicine, New Haven, CT, USA
| | - Cristina Mangas
- Dermatology Department and Institute of Oncology of Southern Switzerland, Ente Ospedaliero Cantonale, Bellinzona, Switzerland
| | - Christiane Querfeld
- Division of Dermatology and Department of Pathology, City of Hope National Medical Center and Beckman Research Institute, Duarte, CA, USA
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Russo I, Fagotto L, Colombo A, Sartor E, Luisetto R, Alaibac M. Near-infrared photoimmunotherapy for the treatment of skin disorders. Expert Opin Biol Ther 2021; 22:509-517. [PMID: 34860146 DOI: 10.1080/14712598.2022.2012147] [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: 10/19/2022]
Abstract
INTRODUCTION Near-Infrared Photoimmunotherapy (NIR-PIT) is a novel molecularly targeted phototherapy. This technique is based on a conjugate of a near-infrared photo-inducible molecule (antibody-photon absorber conjugate, APC) and a monoclonal antibody that targets a tumor-specific antigen. To date, this novel approach has been successfully applied to several types of cancer. AREAS COVERED The authors discuss the possible use of NIR-PIT for the management of skin diseases, with special attention given to squamous cell carcinomas, advanced melanomas, and primary cutaneous lymphomas. EXPERT OPINION NIR-PIT may be an attractive strategy for the treatment of skin disorders. The main advantage of NIR-PIT therapy is its low toxicity to healthy tissues. Cutaneous lymphocyte antigen is a potential molecular target for NIR-PIT for both cutaneous T-cell lymphomas and inflammatory skin disorders.
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Affiliation(s)
- Irene Russo
- Unit of Dermatology, University of Padua, Padova, Italy
| | - Laura Fagotto
- Unit of Dermatology, University of Padua, Padova, Italy
| | - Anna Colombo
- Unit of Dermatology, University of Padua, Padova, Italy
| | - Emma Sartor
- Unit of Dermatology, University of Padua, Padova, Italy
| | - Roberto Luisetto
- DISCOG-Department of Surgery, Oncology and Gastroenterology, University of Padova, Padova, Italy
| | - Mauro Alaibac
- Unit of Dermatology, University of Padua, Padova, Italy
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Lebas E, Collins P, Somja J, Nikkels AF. A Comprehensive Update of the Atypical, Rare and Mimicking Presentations of Mycosis Fungoides. Dermatol Ther (Heidelb) 2021; 11:1931-1951. [PMID: 34709600 PMCID: PMC8611162 DOI: 10.1007/s13555-021-00625-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Indexed: 12/12/2022] Open
Abstract
Introduction Mycosis fungoides (MF) is the most frequent subtype of primary cutaneous T cell lymphomas (pCTCL). The diagnosis may be particularly difficult in the early stages as well as in atypical and rare clinical presentations. Furthermore, MF may simulate a large variety of common dermatologic disorders and patterns, both histopathologically and clinically. Methods A literature search was performed to provide a comprehensive update on the rare and atypical MF manifestations as well as the dermatoses and dermatological patterns that could be imitated by MF. Results A total of 114 publications were found describing a series of different dermatoses and dermatological patterns mimicked by MF, as well as some particular localizations of MF lesions and dermatoses that occur in preexisting MF lesions. Conclusions The number of dermatoses that can be imitated by MF is ever-increasing. Patients with common dermatologic conditions that prove to be treatment refractory should be biopsied without delay, and sequentially as necessary, to prevent delay in diagnosis and progression of disease. Clinicopathologic correlation is the best way of diagnosis.
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Affiliation(s)
- Eve Lebas
- Department of Dermatology, CHU du Sart Tilman, University of Liège, 4000, Liège, Belgium
| | - Patrick Collins
- Department of Dermatopathology, CHU du Sart Tilman, University of Liège, 4000, Liège, Belgium
| | - Joan Somja
- Department of Dermatopathology, CHU du Sart Tilman, University of Liège, 4000, Liège, Belgium
| | - Arjen F Nikkels
- Department of Dermatology, CHU du Sart Tilman, University of Liège, 4000, Liège, Belgium.
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Silic-Benussi M, Saponeri A, Michelotto A, Russo I, Colombo A, Pelizzo MG, Ciminale V, Alaibac M. Near infrared photoimmunotherapy targeting the cutaneous lymphocyte antigen for mycosis fungoides. Expert Opin Biol Ther 2020; 21:977-981. [PMID: 33353448 DOI: 10.1080/14712598.2021.1858791] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Background: Mycosis fungoides (MF) is a low-grade T-cell lymphoma with primary cutaneous involvement accounting for more than half of all primary cutaneous lymphomas. The treatment of MF is very challenging due to the limited therapies available. Near-infrared photoimmunotherapy (NIR-PIT) is a newly developed and highly selective cancer treatment that employs a monoclonal antibody conjugated to a photo-absorber dye, the hydrophilic phthalocyanine IRdye 700DX® (IR700), and near infrared light. In this study, we investigated the effect of NIR-PIT on MF targeting the cell-surface antigen cutaneous lymphocyte antigen (CLA)Matherial and methods: MF derived My-La CD4+ cells were incubated with the anti-CLA antibody conjugated to IR700 and then irradiated with a 690 nm near-infrared light. Cell death was evaluated by propidium iodide staining and flow cytometry 24 hours after irradiation.Results: Treatment with anti-CLA or light irradiation exhibited very modest pro-death effects, whereas treatment with the anti-CLA antibody conjugated to IR700 and then irradiation with a 690 nm near-infrared light induced a substantial increase in death in the MF cell line.Conclusions: NIR-PIT targeting CLA to treat MF showed marked antitumour effects. As such, CLA-targeted NIR-PIT could be a promising treatment for MF and, possibly, other cutaneous diseases characterized by CLA+ skin infiltrating T-cells.
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Affiliation(s)
- Micol Silic-Benussi
- Immunology and Molecular Oncology Unit, Veneto Institute of Oncology IOV-IRCCS, Padova, Italy
| | | | | | - Irene Russo
- Unit of Dermatology, University of Padua, Padova, Italy
| | - Anna Colombo
- Unit of Dermatology, University of Padua, Padova, Italy
| | | | - Vincenzo Ciminale
- Immunology and Molecular Oncology Unit, Veneto Institute of Oncology IOV-IRCCS, Padova, Italy
| | - Mauro Alaibac
- Unit of Dermatology, University of Padua, Padova, Italy
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