A 43-year-old woman (Case 1), 63-year-old man (Case 2), and a 67-year-old man (Case 3) presented with diplopia (Cases 1, 2, and 3) and upper-eyelid ptosis (Cases 1 and 3). The cases had preceding cranial nerve V1 disturbances ranging from 3 months to 8 years. Each demonstrated complete internal ophthalmoplegia and external ophthalmoplegia. No case had a cutaneous squamous cell carcinoma (SCC) on presentation or by history. Imaging revealed isolated orbital apex masses. Tumor biopsies revealed SCCs of various differentiations. Systemic workup revealed no extraorbital malignancy. All received radiation therapy, and 2 patients underwent adjuvant chemotherapy. One patient is alive since diagnosis (49 months). In Case 2, SCC developed in the contralateral orbit, and the patient died 19 months after diagnosis; and Case 3 died 12 months after diagnosis. These isolated cases of orbital SCC may have arisen from orbital choristomatous squamous epithelium, may represent de novo or metastatic tumors, or may be manifestations of occult perineural spread.
A 42-year-old female with a remote history of a left maxillary sinus tumor treated with excision and radiation therapy was referred for dry eye symptoms. Ophthalmic examination revealed left-sided exposure keratopathy, lagophthalmos, lower eyelid retraction, and fat atrophy of inferior periorbital tissue with associated hollowing. Large particle hyaluronic acid gel was injected to expand and reinforce the lower eyelid. After treatment, there was significant improvement in lagophthalmos, inferior scleral show, and periorbital hollowing. Excellent symmetry with the fellow eye was achieved. The patient reported markedly reduced dry eye symptoms. No adverse side effects were observed. The use of large particle hyaluronic acid gel shows promise as a novel nonsurgical therapy in the management of lower eyelid retraction associated with radiation-induced lipoatrophy. Additionally, large particle hyaluronic acid gel may provide better soft tissue expansion and retention than small particle hyaluronic acid gel, increasing the longevity of treatment.
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