Opening a dacryocystorhinostomy into the opposite nasal cavity in a case of hemiarhinia.

Heminasal agenesis is an exceedingly rare congenital anomaly which is frequently associated with disorders of eye, lacrimal drainage system and face. At times, a proboscis may also be noted with this condition. Herein, we present a case of a 13-year-old boy who presented to us with heminasal agenesis with concomitant microphthalmos, leucomatous corneal opacity, blepharoptosis, dacryocystocoele and maxillary hypoplasia. The child underwent a modified transeptal external dacryocystorhinostomy with placement of a lacrimal stent. There was significant improvement of epiphora and discharged following surgery. Heminasal aplasia with dacryocystocoele is surgical challenge; however, a well thought out surgical approach can yield satisfactory outcomes.