Primary Cutaneous Acral CD8⁺ T-Cell Lymphoma.

Area of Science:

• Dermatopathology
• Hematopathology
• Oncology

Background:

• Primary cutaneous acral CD8+ T-cell lymphoma is a newly recognized provisional entity.
• Diagnosis is challenging due to rarity and overlap with other CD8+ lymphoid proliferations.
• Accurate classification is critical due to its distinct indolent clinical behavior.

Purpose of the Study:

• To review the clinical and pathological features of primary cutaneous acral CD8+ T-cell lymphoma.
• To emphasize the differential diagnosis of this entity.
• To aid clinicians in accurate diagnosis and classification.

Main Methods:

• Review of clinical and pathological data.
• Morphological and immunophenotypic analysis.
• Comparison with other CD8+ T-cell lymphomas.

Main Results:

• Primary cutaneous acral CD8+ T-cell lymphoma exhibits specific clinical and pathological characteristics.
• Differential diagnosis requires careful consideration of overlapping features.
• Knowledge of clinical setting and site of involvement is important.

Conclusions:

• Primary cutaneous acral CD8+ T-cell lymphoma is a distinct entity with an indolent course.
• Distinguishing it from other CD8+ T-cell lymphomas is crucial for patient management.
• Clinical and pathological assessment aids in accurate diagnosis.