Vol.100 No.10 contentsPRACTICA OTO-RHINO-LARYNGOLOGICA
Vol. 100 No. 10 October 2007
Three Dimensional Imagings of Ossicular Anomaly Before and After Reconstructive Surgery for Hearing Improvement
Yuko Sasaki, Sachiko Omae, Humiyo Shimura, Yukiko Seto,
Akira Seto, Mayumi Kobayashi, Kouji Matsushima, Hiroshi Osafune,
Tadayuki Yasoshima and Hideo Edamatsu
(Toho University School of Medicine)
A 12-year-old boy with congenital right ossicular anomaly underwent surgery and 3-dimensional computed tomograph (3D-CT) was obtained before and after the ear surgery.
His anomaly was observed intraoperatively and showed dehiscence of incus long process and stapedial head along with dislocation of the anterior crus. TORP was used for reconstruction of air conduction hearing. Hearing improvement of 34 dB was achieved.
Imaging with 3D-CT clearly showed the ossicular anomaly preoperatively and the position of TORP after reconstruction. Our case indicates that 3D-CT is a very useful imaging modality for both preoperative observation of the middle ear and postoperative observation of the reconstructed status.
Key words : ossicular anomaly, three-dimensional CT, TORP