Invasive squamous cell carcinoma of the supraciliary ridge with chemoradiation treatment started recently. There are post-treatment findings in the left supraciliary region. There is a persistent infiltrative enhancing lesion in the left supra-orbital subcutaneous tissues with extension into the left orbital roof, traversing the frontal bone along the lateral aspect of the left frontal sinus with slight epidural extension and extraconal left orbital extension. Overall, the lesion appears to have decreased in size, measuring up to 15 mm, previously 20 mm. The right orbit is unremarkable. There is a subcentimeter left maxillary sinus retention cyst.
Interval decrease in size of the squamous cell carcinoma centered in the left supraciliary ridge region.