Paraprotein associated syndrome treated successfully with chemotherapy

Area of Science:

• Hematology
• Immunology
• Dermatology

Background:

• Paraproteinemias, including IgM lambda, can manifest with diverse systemic symptoms.
• Erythema nodosum is an inflammatory condition that can be associated with underlying systemic diseases.

Observation:

• A 50-year-old Caucasian woman presented with recurrent erythema nodosum, leg swelling, malaise, weight loss, and abdominal pain.
• These symptoms were associated with the presence of an IgM lambda paraprotein.

Findings:

• The patient received six cycles of anti-CD20 monoclonal antibody therapy combined with bendamustine chemotherapy.
• This treatment regimen, administered over a 6-month period, resulted in a favorable clinical outcome.

Implications:

• This case highlights a potential therapeutic approach for managing complex presentations of IgM lambda paraprotein.
• The combination therapy demonstrated efficacy in resolving both the hematologic and systemic manifestations.
• Further research may explore this treatment strategy in similar patient cohorts.