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Revised staging system for primary nodal lymphomas (Lugano classification)

Revised staging system for primary nodal lymphomas (Lugano classification)
Stage Involvement Extranodal (E) status
I One node or a group of adjacent nodes Single extranodal lesions without nodal involvement
II Two or more nodal groups on the same side of the diaphragm Stage I or II by nodal extent with limited contiguous extranodal involvement
II bulky* II as above with "bulky" disease Not applicable
III Nodes on both sides of the diaphragm; nodes above the diaphragm with spleen involvement Not applicable
IV Additional noncontiguous extralymphatic involvement Not applicable
Extent of disease is determined by positron emission tomograph/computed tomography (PET/CT) for avid lymphomas and CT for nonavid histologies. Tonsils, Waldeyer's ring, and spleen are considered nodal tissue.
* Whether stage II bulky disease is treated as limited or advanced disease may be determined by histology and a number of prognostic factors.
From: Cheson BD, Fisher RI, Barrington SF, et al. Recommendations for initial evaluation, staging, and response assessment of Hodgkin and non-Hodgkin lymphoma: The Lugano classification. J Clin Oncol 2014; 32(27):3059-67. Reprinted with permission. Copyright © 2014 American Society of Clinical Oncology. All rights reserved.
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