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A written informed consent was obtained from the patient to publish this
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Figure 1. Clinical examination of the clinical case. (A)
Squamous cell carcinoma on the lateral right side of the tongue, with a
reticular lichen planus. (B) Reticular lichen planus on the lateral left
side of the tongue, with no symptoms. (C) Reticular lichen planus on the
cheek mucosa, with no symptoms.
Figure 2. Histological examination of the tumor after
surgical glossectomy: squamous cell carcinoma differentiated and
infiltrant.
Figure 3. Follow-up at 18 months after surgery (A) Right
side: healing very well and no recurrence. (B) Left side: an erosion
appeared on the reticular LPO, biopsy showed no epithelial dysplasia.
Table 1. Diagnosis criteria of lichen planus in 2024