Should severe epithelial dysplasia be treated?

Area of Science:

• Oral pathology
• Oncology
• Dermatology

Background:

• Severe epithelial dysplasia is a precancerous oral condition.
• Identifying factors predicting progression to invasive squamous cell carcinoma (SCC) is crucial for timely intervention.

Purpose of the Study:

• To determine clinical features associated with the progression of severe oral epithelial dysplasia to invasive SCC.
• To evaluate the impact of surgical treatment on this progression.

Main Methods:

• A longitudinal population-based study involving 118 patients with severe oral dysplasia.
• Lesions were either surgically treated or actively monitored.
• Demographics, habits, clinical data, and outcomes were compared between treated and untreated groups.

Main Results:

• Surgically treated lesions showed significantly less progression to SCC (6%) compared to untreated lesions (29%).
• The 5-year probability of progression was 7.6% for treated versus 38.6% for untreated lesions.
• Clinical changes at the disease site, such as lesion persistence or increase in size, strongly predicted cancer progression.

Conclusions:

• Surgical intervention is effective in reducing the progression of severe oral dysplasia to SCC.
• Monitoring clinical changes at the lesion site provides valuable predictive information for cancer development.