Lhermitte-Duclos disease (LDD) is a rare, slow-growing, benign lesion of the cerebellum. It is often seen in the second and fourth decades. This disease is extremely rare in childhood. A 6-year-old girl presented with loss of balance. A mass lesion in the right cerebellum was detected by magnetic resonance imaging. The patient underwent surgical removal of the lesion, and the histological diagnosis was dysplastic gangliocytoma (LDD). The patient was discharged without complication, and her balance improved in the follow-up period. In this report, we present this rare occurrence in childhood and discuss the clinical course and management. LDD is very rare in early childhood and should be considered in the differential diagnosis of posterior fossa lesions.

Carotid cavernous fistulas (CCF) are abnormal arteriovenous anastomoses between the internal carotid artery (ICA) and the cavernous sinus (CS). There are two broad categories of CCFs with different clinical presentations in direct and indirect form. Internal carotid artery and the CS in the "direct" or "high flow" CCF, and branches of the internal and external carotid artery in "indirect" or "low flow" CCF are found abnormally connected. In the present case, a CCF draining into the ophthalmic vein was detected between the ICA and the CSs. An endovascular flow diverter stent was inserted, and the fistula line was closed. The complaints of the patient immediately disappeared. In CCFs, the flowing stent can completely close the fistula line in a selected patient and appropriate localization.

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