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- Presentation
Cutaneous Lymphoma or Not? Clinicopathologic Challenges and Practical Pearls
Description
The presentation discusses the clinical and pathologic challenges in diagnosing cutaneous lymphomas, particularly mycosis fungoides (MF) and related diseases. It emphasizes the importance of recognizing atypical presentations of these conditions, such as papillomatous mycosis fungoides, and the necessity for thorough histological examination and immunohistochemical staining, including TCL-1 positivity, to guide diagnosis. Several case studies are presented, illustrating varying presentations and the complexity of co-existing conditions like herpes simplex virus (HSV) infections and reactive dermatitis, which can mimic lymphoma. The speaker highlights cases that underscore the need for a broad differential diagnosis, the influence of immune suppression in cancer patients, and potential mimics of lymphomas. Importantly, the discussion touches on the role of concurrent infections and conditions, such as syphilis, that can complicate the clinical picture of cutaneous lymphomas. The presentation concludes with a call for pathologists and clinicians to maintain a comprehensive approach when evaluating skin lesions in patients with known lymphoproliferative disorders.
View moreConclusions
- Mycosis fungoides can present with a variety of clinical and histological features which may mimic other skin conditions.
- Papillomatous mycosis fungoides is characterized by specific histopathological features and may be mistaken for other dermatological disorders.
- T-cell prolymphocytic leukemia (T-PLL) shows aggressive behavior, often presenting with high white blood cell counts and requires immediate treatment.
- Patients with cutaneous malignancies can have concurrent infections or conditions, necessitating a broad differential diagnosis.
- Herpes simplex virus infections can mimic cutaneous hematological malignancies in symptomatic presentations, complicating diagnosis.
- IgG4-related disease and lymphoma may share overlapping features, making accurate diagnosis critical for treatment.
- Clinical presentation and laboratory results must be correlated to avoid misdiagnosis of lymphoproliferative disorders.
- Spigarolo CB et al. J Cutan Pathol 2023
- Cerroni, 5th ed. 2020
- Friederike H. Kreisel, MD ,* John L. Frater, MD ,* and TuDung T. Nguyen, MD, PhD*
- Linglei Ma1, Bizhan Bandarchi1 and Earl J. Glusac1,2
- Leinweber AJSP 2016
- Resnik AJDP 2000
- Hoyt et al. AJDP 2014
- Mangold A et al. Br J Dermatol 2016.
- Yamashita et al, 2015