Observations on occult malignant lymphomas in the skin

Area of Science:

• Dermatology
• Oncology
• Pathology

Background:

• Malignant cutaneous lymphomas (MCL) exhibit varied clinical presentations.
• Early recognition of MCL can be challenging due to diverse lesion morphology.

Observation:

• Six cases of MCL are presented, highlighting a spectrum of skin lesions from nodules to gangrene.
• Initial clinical presentation did not allow for definitive diagnosis of lymphoma in any patient.
• Histologic confirmation of lymphoma was delayed in all reported cases.

Findings:

• Pain was a significant symptom in half of the patients, contradicting the traditional view of painless lymphoma.
• The diverse clinical patterns underscore the difficulty in early diagnosis of cutaneous lymphomas.

Implications:

• Clinicians should consider MCL in unexplained chronic inflammatory skin conditions, even when painful.
• The described skin lesions serve as a model for recognizing extranodal lymphomas.
• Rethinking the 'painless lymphoma' dogma is crucial for timely diagnosis and treatment of cutaneous lymphomas.