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Stratification of Poor Outcomes for Cutaneous Squamous Cell Carcinoma in Immunosuppressed Patients Using the American Joint Committee on Cancer Eighth Edition and Brigham and Women's Hospital Staging Systems

Blechman, Adam B. MD; Carucci, John A. MD, PhD; Stevenson, Mary L. MD

doi: 10.1097/DSS.0000000000001774
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BACKGROUND Staging systems for cutaneous squamous cell carcinoma (CSCC) include Brigham and Women's Hospital (BWH) and American Joint Committee on Cancer staging system, eighth edition (AJCC-8).

OBJECTIVE To evaluate and compare AJCC-8 and BWH staging systems for CSCC in immunosuppressed patients.

MATERIALS AND METHODS A retrospective cohort study of immunosuppressed patients diagnosed with primary CSCC from 2012 to 2016. The main end point was any poor outcome (PO), which included local recurrence, nodal metastasis, and disease-specific death.

RESULTS Fifty-eight immunosuppressed patients had 263 CSCCs. Fifty percent of tumors were AJCC-8 T1, 44.7% T2, and 4.8% T3. Fifty percent of tumors were BWH T1, 48.5% T2a, 1.3% T2b, and 0.4% T3. Risk of PO for AJCC-8 was 1.7%, 8.8%, and 36.4% for T1, T2, and T3, respectively (p < .01). Risk of PO for BWH was 1.8%, 9.9%, 33.3%, and 100.0% for T1, T2a, T2b, and T3, respectively (p < .01). Thirty-six percent of AJCC-8 T3/T4 tumors had POs compared with 5.1% in low T1/T2 stages (p = .002). Fifty percent of BWH T2b/T3 tumors had POs compared with 5.3% in low T1/T2a stages (p = .01).

CONCLUSION AJCC-8 and BWH staging systems stratify CSCC with similar distinctiveness, homogeneity, and monotonicity for immunosuppressed patients.

*All authors are affiliated with the The Ronald O. Perelman Department of Dermatology, New York University Langone Medical Center, New York, New York

Address correspondence and reprint requests to: Mary L. Stevenson, MD, The Ronald O. Perelman Department of Dermatology, New York University Langone Medical Center, 222 E 41st Street, 24th Floor, New York, NY 10017, or e-mail: Mary.Stevenson@nyulangone.org.

Tromovitch Award Winner for the Abstract presented at the 2018 American College of Mohs Surgery (ACMS) Annual Meeting. The authors have indicated no significant interest with commercial supporters.

© 2019 by the American Society for Dermatologic Surgery, Inc. Published by Wolters Kluwer Health, Inc. All rights reserved.
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