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Cutaneous T-Cell Lymphoma (CTCL)

Heterogeneous group of non-Hodgkin lymphomas of skin-homing T lymphocytes including mycosis fungoides (most common), Sézary syndrome, primary cutaneous CD30+ lymphoproliferative disorders, and other variants requiring multidisciplinary dermatology-oncology management.

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Dermatoloji department. Book Appointment →

What is Cutaneous T-Cell Lymphoma (CTCL)?

Cutaneous T-cell lymphoma (CTCL) represents a heterogeneous group of non-Hodgkin lymphomas characterized by clonal proliferation of skin-homing T lymphocytes. The most common subtype is mycosis fungoides (MF, 60-70% of CTCL), an indolent disease with characteristic stage progression: patch (early), plaque (intermediate), tumor (advanced), and erythrodermic (advanced). Sézary syndrome (SS) represents the leukemic variant with circulating malignant T cells.

Other CTCL subtypes include CD30+ lymphoproliferative disorders (lymphomatoid papulosis - LyP, primary cutaneous anaplastic large cell lymphoma - pcALCL) with generally favorable prognosis, subcutaneous panniculitis-like T-cell lymphoma, primary cutaneous gamma-delta T-cell lymphoma, primary cutaneous CD8+ aggressive epidermotropic cytotoxic T-cell lymphoma, and primary cutaneous CD4+ small/medium T-cell lymphoproliferative disorder.

Diagnosis requires multidisciplinary approach: clinical assessment, dermatopathology (often multiple biopsies needed), immunohistochemistry (CD3, CD4, CD8, CD7, CD30), T-cell receptor gene rearrangement studies, peripheral blood flow cytometry for Sézary cells, imaging (CT, PET-CT) for staging in advanced disease. Treatment is stage-based per ISCL/EORTC TNMB staging: skin-directed for early disease, systemic for advanced. Total skin electron beam therapy (TSEB), extracorporeal photopheresis, and allogeneic stem cell transplant for selected cases.

Symptoms

Persistent eczematous patches and plaques mimicking eczema or psoriasis
Indurated infiltrated plaques with thickening and scaling
Tumors emerging from previous patches/plaques (advanced disease)
Erythroderma (>80% body surface area involvement) with severe pruritus
Lymphadenopathy (cervical, axillary, inguinal nodes)
Sézary syndrome triad: erythroderma + lymphadenopathy + circulating Sézary cells
Constitutional symptoms in advanced disease: fever, night sweats, weight loss

Risk Factors

Age >50 years (peak incidence 50-70 years)
Male sex (2:1 male predominance for mycosis fungoides)
African American ethnicity (higher incidence and earlier onset)
Industrial chemical exposure (controversial association)
Chronic immunosuppression (HIV, transplant patients)
Family history (rare familial clusters reported)
HTLV-1 infection (associated with adult T-cell leukemia/lymphoma, distinct entity)

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Persistent skin lesions diagnosed as eczema or psoriasis not responding to standard treatment
  • Patches in non-sun-exposed areas (buttocks, breasts, lower trunk)
  • Indurated plaques with violaceous color or atrophy
  • New skin tumors arising from chronic dermatitis
  • Generalized erythroderma with severe pruritus and skin thickening
  • Lymphadenopathy in patient with chronic skin condition
  • Suspected CTCL on prior skin biopsy requiring further workup

Treatment Methods

01
Multiple skin biopsies (often required for diagnosis), immunohistochemistry, T-cell clonality studies
02
Staging workup: complete blood count with Sézary cell evaluation, peripheral blood flow cytometry, CT/PET-CT for advanced stage, lymph node biopsy if clinically indicated
03
Early stage IA-IIA: skin-directed therapy with topical corticosteroids, topical chemotherapy (mechlorethamine), topical retinoids (bexarotene gel), narrow-band UVB or PUVA
04
Stage IIB (tumor): localized radiation therapy, total skin electron beam therapy (TSEB)
05
Stage III (erythrodermic): extracorporeal photopheresis, low-dose methotrexate, oral bexarotene, interferon alpha
06
Advanced stage IV: systemic therapy with brentuximab vedotin (CD30+ disease), mogamulizumab (CCR4+ disease), HDAC inhibitors (vorinostat, romidepsin), pralatrexate
07
Allogeneic stem cell transplant for advanced/relapsed disease in suitable candidates; supportive care including pruritus management, infection prophylaxis, nutritional support

Which Department to Visit?

You can visit our Dermatoloji department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.