Acute Ethmoiditis Complicated by Retro-Ocular Abscess in a Child

Summary Complications of sinusitis are mainly secondary to ethmoidal and frontal sinusitis. They are favored by immunodepression and anatomical anomalies that connect the endocranium or orbit to the sinus cavities. The seriousness of the condition lies in the risk of infection spreading to the endocranium and orbital cavities. The diagnosis should be systematically evoked in the event of treatment-resistant symptoms and the appearance of orbital or neurological signs. CT and MRI scans help to orient the diagnosis and assess the extent of the lesion. Treatment is based on prolonged antibiotic therapy and surgical management as part of a multidisciplinary approach involving ENT, ophthalmology, neurosurgery and intensive care.