Esotropy revealing a recurrence of undifferentiated carcinoma of the cavum

Introduction: In Morocco, the incidence of cavum cancer remains high, estimated at around 3.8/100,000 inhabitants/year. However, ocular manifestations of this pathology remain rare, and can be revealing in certain cases. Material and method: We report the case of a recurrence of undifferentiated carcinoma of the cavum revealed by right eye esotropia, in a 50-year-old woman, declared in complete remission for 1 year. Diagnosis was based on imaging and endoscopy associated with biopsy. Discussion: Ophthalmic manifestations of cavum cancer are rare; they can be part of the clinical picture or sometimes even revealing the disease. Exophthalmos is often associated with diplopia. Oculomotor disorders are linked to the oculomotor nerves and muscles damages. The objectives of the ophthalmological examination are to evaluate the orbito-ocular extension and the contralateral eye visual acuity. Treatment is based on early radiotherapy which most often leads to improvement in visual and oculomotor impairment. Conclusion: The ophthalmological signs in cavum carcinomas are due to a direct extension of the tumor at the level of the orbital apex and at the base of the skull. Radiotherapy improves the functional ocular prognosis.