Cochlear implant extrusion secondary to keloid formation

Abstract

Objective and importance

The goal of this paper is to describe a previously unreported etiology for cochlear implant extrusion. A short literature review is included. This paper represents the first reported case of cochlear implant extrusion secondary to keloid formation.

Clinical presentation

We present the case of a 40-year-old male who underwent cochlear implant insertion approximately 5 years prior who later developed a 5 cm post-auricular soft tissue swelling and partial extrusion which interfered with implant function.

Intervention

He subsequently underwent wound debridement, cochlear implant removal, and rotational skin flap closure. Final pathology revealed keloid scar.

Conclusion

Cochlear implant extrusion is a rare complication which has been attributed to various causes. This report identifies keloid formation as another possible source.

Keywords:

• Cochlear implant
• Keloid
• Extrusion
• Complication
• Otology