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Guidelines on Diagnosis and Treatment of Malignant Lymphomas

Guidelines on Diagnosis and Treatment of Malignant Lymphomas

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Potential diagnostic pitfalls for<br />

large/intermediate cell morphology<br />

N<strong>on</strong>-lymphoid malignancy<br />

■ Germ Cell tumour<br />

■ Carcinoma<br />

■ Melanoma<br />

■ Sarcoma<br />

Burkitt lymphoma is missed – (If proliferative index<br />

(Ki67) is high <strong>and</strong> BCL2 is negative – think Burkitt)<br />

C<strong>on</strong>firm with Molecular genetic studies for MYC <strong>and</strong><br />

BCL2 translocati<strong>on</strong>s<br />

B Cell Lymphoblastic lesi<strong>on</strong>s - (include TdT in panel)<br />

Myeloid lesi<strong>on</strong>s If CD20 is negative but CD79A positive<br />

Plasma Cell lesi<strong>on</strong>s c<strong>on</strong>sider these<br />

“Blastic” Mantle Cell lymphoma – include CD5 in<br />

initial panel. C<strong>on</strong>firm with Cyclin D1 or molecular genetic<br />

studies for BCL1 translocati<strong>on</strong>.<br />

10

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