What provides definitive histologic confirmation of lymphoma?

What provides definitive histologic confirmation of lymphoma?

• A. Lymph node biopsy
• B. CBC
• C. Electrolytes
• D. CT scan

Answer: (A)

Definitive confirmation of lymphoma comes from analyzing tissue under the microscope. A lymph node biopsy provides actual tissue that pathologists can examine for malignant lymphoid cells and the pattern of nodal architecture. This histologic view, often paired with immunohistochemical stains (like CD20 for B cells or CD3 for T cells) and other studies, allows not only to confirm lymphoma but also to classify its subtype. Using a CBC or electrolytes tells you about blood counts or metabolic status, and imaging like a CT scan shows anatomy and disease extent, but none of these prove that lymphoma is present at the tissue level. An excisional lymph node biopsy is preferred because it preserves the architecture necessary for accurate diagnosis and subtyping, whereas fine-needle aspirates may miss important histologic details.

Definitive confirmation of lymphoma comes from analyzing tissue under the microscope. A lymph node biopsy provides actual tissue that pathologists can examine for malignant lymphoid cells and the pattern of nodal architecture. This histologic view, often paired with immunohistochemical stains (like CD20 for B cells or CD3 for T cells) and other studies, allows not only to confirm lymphoma but also to classify its subtype.

Using a CBC or electrolytes tells you about blood counts or metabolic status, and imaging like a CT scan shows anatomy and disease extent, but none of these prove that lymphoma is present at the tissue level. An excisional lymph node biopsy is preferred because it preserves the architecture necessary for accurate diagnosis and subtyping, whereas fine-needle aspirates may miss important histologic details.