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Pure Second Arch Syndrome

Fig 1a Axialcomputedtomogramshowingsingleossicular mass (arrow), external auditory meatus (Fig 1). The middle ear was hypoplastic. A single ossicular mass could be observed at the normal site of the head of the malleus and the body of the incus (Figs 1 and 2). The long process of the incus, the stapes, and the handle of the malleus were absent. The facial nerve had a denuded second part andananteriorly displaced third part (Fig 2). The innerear was normal. The styloid process was absent.