[Infraorbital lesion after scuba diving with chronic sinusitis: diagnosis and treatment of reverse block].

A 32-year-old diver repeatedly reported pain in the right side of the face after diving. He felt strong pain on pressure over the right face combined with hypaesthesia of the infraorbital nerve. In addition, he reported nasal breathing obstruction and problems regulating pressure in the middle ear. ENT consultation revealed a septal deviation to the right side of the nasal cavity. CT diagnosis showed the typical picture of chronic pansinusitis with total transfer of the right frontal sinus, subtotal transfer of the right ethmoid and subtotal transfer of the right maxillary sinus. Following successful functional sinus surgery (FESS), combined with septal surgery, the patient was able to dive again symptom-free.