Comparison of Pediatric- and Adult-Onset Mycosis Fungoides Patients in Terms of Clinical Features and Prognosis in a Large Series.

Background: Studies comparing the clinical and prognostic differences between pediatric- and adult-onset mycosis fungoides (MF) are limited.

Objectives: To determine the impact of childhood-onset MF on clinical features and disease course in a large series.

Methods: Consecutive MF patients seen in a single centre between 2007 and 2021 were categorized into 3 groups: (i) MF patients diagnosed in the pediatric ages (≤18 years) (pediatric group), (ii) MF patients with disease onset in the pediatric period and diagnosis in adulthood (lately diagnosed pediatric-onset group), and (iii) MF patients with disease onset in the adulthood period (>18 years) (adult-onset group).

Efficacy and Safety of Denileukin Diftitox-Cxdl, an Improved Purity Formulation of Denileukin Diftitox, in Patients With Relapsed or Refractory Cutaneous T-Cell Lymphoma.

Purpose: Denileukin diftitox (DD)-cxdl is a fusion protein comprising diphtheria toxin fragments A and B and human interleukin-2. This phase III, multicenter, open-label, single-arm registrational trial evaluated the efficacy and safety of DD-cxdl in patients with relapsed/refractory (R/R) cutaneous T-cell lymphoma (CTCL).

Patients And Methods: In the main study, which followed a dose-finding lead-in, DD-cxdl was administered intravenously daily (5 days; 9 µg/kg/d once daily) every 21 days for up to eight cycles.

A Yale Dermatology Perspective on Cutaneous T-Cell Lymphoma: Historical Reflection to Emerging Therapies.

Cutaneous T cell lymphoma (CTCL) is a form of non-Hodgkin lymphoma that can involve the skin, along with lymph nodes and blood. The two most common subtypes of CTCL are mycosis fungoides and Sézary syndrome, Since the initial description of mycosis fungoides by Dr. Jean-Louis Alibert in 1806, there have been significant advances in our understanding of the pathogenesis of CTCL, its diverse clinical and histologic variants, and the evolving treatment landscape.

Primary Cutaneous Anaplastic Large Cell Lymphoma With Rare Extracutaneous Disseminated Disease: A Case Report.

Primary cutaneous anaplastic large cell lymphoma (pcALCL) is a CD30+ lymphoproliferative disorder with generally favorable outcomes and infrequent extracutaneous spread, usually limited to local lymph nodes. However, there may be extensive histologic overlap with more aggressive CD30+ lymphomas, such as large cell transformation of mycosis fungoides or secondary skin involvement by anaplastic lymphoma kinase (ALK)-negative anaplastic large cell lymphoma. Definitive diagnosis relies on clinicopathologic correlation.

Multi-Omic Data Integration Suggests Putative Microbial Drivers of Aetiopathogenesis in Mycosis Fungoides.

Background: Mycosis fungoides (MF) represents the most prevalent entity of cutaneous T cell lymphoma (CTCL). The MF aetiopathogenesis is incompletely understood, due to significant transcriptomic heterogeneity and conflicting views on whether oncologic transformation originates in early thymocytes or mature effector memory T cells. Recently, using clinical specimens, our group showed that the skin microbiome aggravates disease course, mainly driven by an outgrowing, pathogenic strain carrying the virulence factor spa, which was shown by others to activate the T cell signalling pathway NF-κB.

Spatially resolved single-cell transcriptome analysis of mycosis fungoides reveals distinct biomarkers GNLY and FYB1 compared to psoriasis and chronic spongiotic dermatitis.

Early mycosis fungoides (MF) and inflammatory dermatoses including psoriasis and chronic spongiotic dermatitis are often difficult to differentiate. We explored diagnostic markers differentiating MF from psoriasis and chronic spongiotic dermatitis via spatially resolved single-cell transcriptome analysis. Single-cell transcriptomics of intraepidermal T cells of MF patches, psoriasis and chronic spongiotic dermatitis were analyzed using CosMx spatial molecular imager utilizing surface markers, including CD3 and CD4.

Breaking Down the Barriers for Patients With Cutaneous T-Cell Lymphoma: Current Controversies and Challenges for Radiation Oncologists in 2024.

Cutaneous T-cell lymphomas (CTCL) are a rare collection of diseases, frequently associated with diagnostic challenges and complex management dilemmas. The multidisciplinary team is vital for accurate clinico-pathological diagnoses and for collaborative therapeutic decisions throughout the management journey, which frequently involves multiple lines of therapy. Radiotherapy (RT) is a highly effective skin-directed therapy for CTCL, commonly delivered as localised fields or as total skin electron beam therapy (TSEBT).

CD4/CD8 double-negative mycosis fungoides: a review.

Mycosis fungoides (MF) stands as the predominant form of primary cutaneous T-cell lymphoma (CTCL). It manifests a diverse array of clinical, histological, and immunophenotypic variations, each bearing distinct prognostic implications. The typical immunophenotypic profile of mycosis fungoides involves CD3+/CD4+/CD45RO+ memory T cells.

Differential Expression of p53 in Mycosis Fungoides, Sezary Syndromes, and Their Transformed Forms.

Mycosis fungoides (MF) and Sezary syndrome (SS) are common entities among primary cutaneous lymphomas. Large cell transformation is challenging for diagnosis and therapy. Molecular mechanisms by which these lymphomas undergo this transformation are poorly defined.

Differentiating mycosis fungoides lesions from their mimickers clinically and histologically: A single tertiary center retrospective analysis in Saudi Arabia.

Objectives: To identify the clinical and histological features of MF that can assist in distinguishing MF from MF-mimicking cases. Although mycosis fungoides (MF) is the most common subtype of cutaneous T-cell lymphoma, clinicopathological correlations are required to establish an accurate diagnosis, which are currently lacking.

Methods: This retrospective observational study evaluated the clinical presentations, characteristics, and histological features of 56 patients with suspected MF who presented to our clinic between January 2018 and August 2022.

[Clues in dermatopathological diagnostics].

Numerous diagnostic clues are used in routine dermatopathological diagnostics. Ideally, a diagnostic clue can lead directly to a specific diagnosis and save further time-consuming additional diagnostic procedures. This article discusses the concept of "clues to diagnosis" starting from its historical beginnings with a review of relevant studies and including current literature.

Folliculotropic and syringotropic mycosis fungoides mimicking basal cell carcinoma.

Mycosis fungoides (MF) is characterized by a clonal proliferation of skin-homing mature T cells with special predilection for involving the epidermis. Folliculotropic and syringotropic MF typically present with erythematous papules, patches, and plaques, with punctate accentuation that is folliculocentric in the former. We report a 67-year-old woman, with an extensive history of allergic contact dermatitis, who was referred to the Mohs surgery clinic with a large pink plaque extending from the nasal bridge to the right upper medial cheek concerning for basal cell carcinoma.

Zosteriform mycosis fungoides: case report of progression to tumor stage and review of the literature.

Mycosis fungoides (MF) is the most common type of cutaneous T-cell lymphoma, although it has many clinicopathological variants. Zosteriform MF is an extremely rare variant characterized by dermatomal distribution. To date, only six patients with zosteriform MF have been reported.

Immune Checkpoints and Their Inhibition in T-Cell Lymphomas.

T-cell lymphomas (TCLs) are a rare and heterogeneous subgroup of non-Hodgkin lymphomas (NHLs), forming only 10 % of all NHL cases in Western countries. Resulting from their low incidence and heterogeneity, the current treatment outcome is generally unfavorable, with limited availability of novel therapeutic approaches. Therefore, the recent success of immune checkpoint inhibitors (ICIs) in cancer treatment motivated their clinical investigation in TCLs as well.

Through thick and thin: confronting the aggressive cutaneous T-cell lymphomas.

The cutaneous T-cell lymphomas (CTCLs) comprise a diverse set of diseases with equally diverse presentations ranging from asymptomatic solitary lesions to highly aggressive diseases with propensity for visceral spread. The more aggressive CTCLs, which herein we consider as certain cases of advanced-stage mycosis fungoides/Sézary syndrome (MF/SS), primary cutaneous CD8+ aggressive epidermotropic cytotoxic T-cell lymphoma (PCAETCL), and primary cutaneous gamma delta T-cell lymphoma (PCGDTCL), require systemic therapy. Over the last 5 years, treatment options for MF/SS have expanded with biological insights leading to new therapeutic options and increasingly unique management strategies.

The role of stem cell transplant (auto and allo) in PTCL and CTCL.

In contrast to B-cell lymphoma, the advent of modern targeting drugs and immunotherapeutics has not led to major breakthroughs in the treatment of peripheral T-cell lymphoma (PTCL) to date. Therefore, both autologous and allogeneic hematopoietic cell transplantation (HCT) continue to play a central role in the management of PTCL. Focusing on the most common entities (PTCL not otherwise specified, angioimmunoblastic T-cell lymphoma, and ALK-negative anaplastic large cell lymphoma), we summarize evidence, indications, and points to consider for transplant strategies in PTCL by treatment line.

Cutaneous Squamous Cell Carcinoma Arising Within a Previously Irradiated Mycosis Fungoides Lesion.

Mycosis fungoides (MF), a form of cutaneous T-cell lymphoma (CTCL), increases the risk of other malignancies. A common and effective treatment for patients with MF is radiotherapy (RT), which itself also increases the risk of malignancies. One such malignancy that may result from both MF and RT is cutaneous squamous cell carcinoma (cSCC).

A Case Series of Diagnostic Challenges in Mycosis Fungoides in Resource-poor Settings: Blood Film Examination - A Useful Tool.

The prognosis/mortality rate in mycosis fungoides (MF)/cutaneous T-cell lymphomas (CTCL) is alarming in resource-poor countries due to delayed diagnosis in meeting recognised criteria. We highlight the diagnostic accuracy of examining peripheral blood films (PBFs). We reviewed clinically diagnosed MF/CTCL cases in the Dermatology Clinic of Lagos University Teaching Hospital between January and October 2022 and analysed clinical, haematological and histology findings.

Dermatological dichotomy: Atopic dermatitis or mycosis fungoides?

The presence of atopic dermatitis (AD) and mycosis fungoides (MF) presents diagnostic challenges due to their shared clinical features. AD, a chronic skin disorder characterized by pruritic and inflamed lesions, shares these features with MF, which is the most common cutaneous T-cell lymphoma. A 19-year-old male, who had a history of childhood AD, developed eczema-like lesions on his forearms, neck, and head.

Clinical characterization of mycosis fungoides with abnormal light reactions induced by narrow-band UVB therapy: A review of a single-center experience.

Narrow-band UVB (NB-UVB) therapy at a wavelength of 311 nm is often used to treat mycosis fungoides (MF). However, we occasionally encounter cases of erythema induced by low doses of NB-UVB, known as an abnormal light reaction (ALR). We investigated the incidence of ALR in patients with MF and the association between ALR and clinical and laboratory findings.