Aggressive large B-cell lymphoma triggered by a parvovirus B19 infection in a previously healthy child

Area of Science:

• Pediatric Hematology
• Viral Infections
• Oncology

Background:

• Parvovirus B19 (PVB-19) is generally considered a benign viral infection in individuals without underlying red blood cell disorders or immune deficiencies.
• PVB-19 infections typically manifest with symptoms like erythema infectiosum (fifth disease) or transient aplastic crisis.

Observation:

• A previously healthy 10-year-old boy presented with a PVB-19 infection.
• Clinical presentation included bicytopenia and significant axillary adenopathy.
• Initial lymph node biopsy revealed a reactive lymphoid population.

Findings:

• The patient did not achieve remission.
• A subsequent biopsy of the axillary adenopathy, nine months later, diagnosed Hodgkin lymphoma with areas of T-cell rich aggressive large B-cell lymphoma.
• This progression occurred in the absence of any identified red blood cell disease or immune defect.

Implications:

• This case raises the possibility of parvovirus B19 acting as a potential trigger for malignant childhood hemopathies.
• The findings prompt further investigation into the role of PVB-19 in lymphomagenesis.
• Further research is warranted to explore the potential oncogenic mechanisms of PVB-19 in pediatric lymphoma development.