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TUMOR JAR.

RETIKULOENDOTELIAL

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neoplasms of the

Lymphoid System

T. Utoro

Department of Pathology

Gadjah Mada University School of Medicine

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THE LYMPHNODE

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THE LYMPHNODE

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LYMPHOID TISSUE

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Lymphoid Neoplasms

Certain relevant principles must beemphasized

Can be suspected from the clinical features, buthistologic examination of lymph nodes and other

involved tissue is required for diagnosis

The vast majority of lymphoid neoplasms (80% -85%) are of B-cell origin; most of the remainderbeing T-cell tumors; only rarely are tumors of NKorigin encountered

Two basic forms of B-cell lymphoma: follicular &diffuse type

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Lymphoid Neoplasms Lymphoid neoplams are tumors of the immune

system disrupt normal immune regulatory

mechanisms (evidences: susceptibility toinfection, autoimmune diseases)

>