Comments on cutaneous lymphomas: since the WHO-2008 classification to present

Area of Science:

• Dermatology
• Hematology
• Oncology

Background:

• The 2008 World Health Organization (WHO) classification for lymphomas brought significant changes.
• These changes have led to ongoing debates and challenges in the literature regarding cutaneous lymphomas.

Purpose of the Study:

• To highlight controversies and dilemmas arising from the 2008 WHO classification of lymphomas.
• To review recent advances in primary cutaneous lymphomas.
• To discuss entities that present challenges in categorization.

Main Methods:

• Literature review of controversies in cutaneous lymphoma classification.
• Review of recent advances in T-cell, NK-cell, B-cell, and precursor cutaneous neoplasms.
• Analysis of entities not fitting established categories.

Main Results:

• The 2008 WHO classification, while useful, has generated new questions and concerns.
• Specific controversies exist within cutaneous mature T-cell and NK-cell neoplasms, mature B-cell neoplasms, and precursor neoplasms.
• Recent literature reveals advancements in understanding and managing these conditions.

Conclusions:

• The classification of cutaneous lymphomas remains an evolving field with persistent challenges.
• Ongoing research and discussion are crucial for refining diagnostic criteria and understanding.
• Addressing these controversies is essential for accurate diagnosis and patient care.