Angioimmunoblastic T-cell Lymphoma Associated with IgA Nephropathy

Area of Science:

• Nephrology
• Hematology
• Oncology

Background:

• Angioimmunoblastic T-cell lymphoma (AITL) is a rare peripheral T-cell lymphoma.
• IgA nephropathy is a common cause of primary glomerulonephritis.
• The co-occurrence of AITL and IgA nephropathy is infrequently reported.

Observation:

• A 79-year-old Japanese male presented with edema, fatigue, and fever.
• Investigations revealed polyclonal gammopathy, elevated IgA, hematuria, and proteinuria.
• Computed tomography showed generalized lymphadenopathy, leading to diagnoses of AITL and IgA nephropathy via biopsy.

Findings:

• Renal biopsy confirmed IgA nephropathy in the context of AITL.
• Chemotherapy for AITL resulted in the alleviation of edema, hematuria, and proteinuria.
• This suggests a potential paraneoplastic or direct relationship between AITL and IgA nephropathy.

Implications:

• This case underscores the importance of considering IgA nephropathy in patients diagnosed with AITL.
• Further research is warranted to elucidate the pathogenic mechanisms linking AITL and IgA nephropathy.
• Early diagnosis and integrated treatment may improve outcomes for patients with both conditions.