What is the best treatment for a squamous cell carcinoma of the palpebral conjunctiva with persistently positive margins after resection?

Ideally, would be managed by an Oncologist Ophthalmologist with high experience in ocular plaque brachytherapy. A "boomerang" plaque loaded with I-125 seeds calculated to the deepest margin (1, 2 mm deep, and 2-3 mm around the tumor or tumor bed). Total dose at the deepest point, 3,000 cGy.

Jorge E....