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Behavior of oral squamous cell carcinoma in subjects with prior lichen planus
Amanda A Muñoz1, Robert I Haddad, Sook-Bin Woo
1Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA, USA.
Objective:
To characterize the clinical behavior of oral squamous cell carcinomas (OSCCA) arising in patients with pre-existing oral lichen planus (OLP).
Study Design And Setting:
Retrospective case-control study. Disease-free interval, time to first recurrence, subsequent therapy, and overall survival were calculated and compared between cases and controls matched for age, gender, primary site, and tumor stage.
Results:
In 10 identified subjects with OLP/OSCCA, mean time from OLP diagnosis to OSCCA was 5.5 years. Three subjects suffered a local recurrence and two developed a second primary OSCCA. Mean actuarial survival for OLP patients was 119 months vs 42 months for the control patients, though this difference was not significant (P = 0.201, log-rank).
Conclusions:
OLP/SCCA subjects may exhibit better actuarial survival than SCCA patients despite a somewhat higher rate of local recurrence and second primary SCCA. Further study is required to characterize the behavior of OSCCA arising in pre-existing OLP.
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