Table 2. Cases 4 and 5.

	Posttraumatic CSF leak
Case	4	5
Age, y/sex	55/F	31/F
History	Successful left stapedotomy 10 y earlier, barotrauma, sudden hearing loss and vertigo	Head injury without temporal bone fracture: sudden hearing loss and vertigo
Preoperative symptoms	Left anacusis Positional vertigo	Left anacusis Orthostatic headache Positional vertigo
Radiologic evaluation	Left pneumolabyrinth	Left stapediovestibular dislocation
Preoperative audiological test	Left anacusis	Left anacusis
Preoperative vestibular test	Complete left vestibular areflexia	Complete left vestibular areflexia
Site of fistula	Oval window at the level of the stapedotomy (prosthesis dislocation)	Oval window (stapes dislocation)
Failed treatment	Oval window closure with fat through endaural approach	Oval window closure with fat and temporalis fascia through endaural approach
Postoperative complications	None	None
Postoperative symptoms	Disappeared at 40 d	Disappeared at 55 d
Follow-up	2 y	4 y

Abbreviation: CSF, cerebrospinal fluid.