A Bizarre Progression Of Chronic Lymphocytic Leukaemia Into Diffuse Large B-Cell Lymphoma

Area of Science:

• Hematology
• Oncology
• Medical Diagnostics

Background:

• B-cell chronic lymphocytic leukemia (B-CLL) is a common B-cell malignancy.
• Richter's transformation (RT) is a rare but serious complication of CLL, involving transformation into aggressive lymphoma.
• Early recognition of RT is crucial for effective management.

Observation:

• A 65-year-old male with B-CLL presented with worsening symptoms including fever and abdominal pain.
• Physical examination revealed massive splenomegaly.
• Laboratory findings showed atypical lymphoid cells with CD19 and CD5 positivity, and ATM gene deletion.

Findings:

• The patient was initially diagnosed with B-cell chronic lymphocytic leukemia and treated with chemotherapy and rituximab-bendamustine.
• Despite treatment, symptoms recurred and worsened, with massive splenomegaly noted.
• Bone marrow biopsy confirmed Richter's transformation of B-CLL into Diffuse large B-cell Lymphoma.

Implications:

• This case highlights the importance of vigilance for Richter's transformation in B-CLL patients, even after initial treatment.
• Prompt diagnosis and aggressive management are essential for improving outcomes in Richter's transformation.
• Understanding the molecular mechanisms and clinical presentation of RT is vital for oncologists and hematologists.