The correct answer is B. Stage IB.
| The ISCL/EORTC staging criteria for mycosis fungoides are as follows:
T1: limited patches, papules, and/or plaques involving <10% BSA T2: patches, papules, and/or plaques involving >10% BSA (as in this patient’s case) T3: 1+ tumors 1 cm or larger in diameter T4: erythema involving >80% BSA No clinically detectable nodes corresponds to N0. Prior to evaluation for metastases and assessment for blood involvement, this correlates to stage IB disease (B). References: Elise Olsen, Eric Vonderheid, Nicola Pimpinelli, Rein Willemze, Youn Kim, Robert Knobler, Herschel Zackheim, Madeleine Duvic, Teresa Estrach, Stanford Lamberg, Gary Wood, Reinhard Dummer, Annamari Ranki, Gunter Burg, Peter Heald, Mark Pittelkow, Maria-Grazia Bernengo, Wolfram Sterry, Liliane Laroche, Franz Trautinger, Sean Whittaker; for the ISCL/EORTC, Revisions to the staging and classification of mycosis fungoides and Sézary syndrome: a proposal of the International Society for Cutaneous Lymphomas (ISCL) and the cutaneous lymphoma task force of the European Organization of Research and Treatment of Cancer (EORTC). Blood 2007; 110 (6): 1713–1722. doi: https://doi.org/10.1182/blood-2007-03-055749 |