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Case Reports in Otolaryngology
Volume 2015, Article ID 506484, 4 pages
Case Report

Late Pneumolabyrinth May Be Induced by Old Penetrating Injury: Possibility of Undiagnosed Posttraumatic Perilymphatic Fistula

1Department of Otorhinolaryngology, Head and Neck Surgery, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotakecho, Miyazaki 889-1692, Japan
2Department of Otorhinolaryngology, Head and Neck Surgery, Kagoshima City Hospital, No. 20-17, Kajiyacho, Kagoshima 892-8580, Japan

Received 28 December 2014; Accepted 21 March 2015

Academic Editor: Tamás Karosi

Copyright © 2015 Takahiro Nakashima et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Traumatic pneumolabyrinth is a relatively rare entity. We report the case of a unilaterally deaf woman with pneumolabyrinth who had suffered penetrating injury 15 years ago. This past history indicated that the case was late pneumolabyrinth occurring from undiagnosed old posttraumatic perilymphatic fistula. In Japan, most cases of traumatic pneumolabyrinth are caused by penetrating injury with an ear pick. Dizziness often improves within several months. Immediate surgical intervention is recommended for hearing loss, but the hearing outcome is not satisfactory. An appropriate strategy should be selected based on the interval to surgery, bone conduction hearing level at disease onset, stapes lesions, and location of air.