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Evaluation of High-Resolution CT After Tympanoplasty

1992; Lippincott Williams & Wilkins; Volume: 16; Issue: 5 Linguagem: Inglês

10.1097/00004728-199209000-00020

1532-3145

Tatsuo Torizuka, Katsumi Hayakawa, Yoshikazu Satoh, Fumiko Tanaka, Yoshishige Okuno, Masayuki Maeda, Michihide Mitsumori, Saburo Mimaki, Junji Konishi,

Facial Nerve Paralysis Treatment and Research

The temporal bones of 28 patients who underwent tympanoplasty were evaluated with high-resolution CT (HRCT). Seventeen patients had undergone tympanoplasty with a columella, used to form an ossicular reconstruction. The incus body was used as the columella in 4 patients and a prosthesis was used in 13 patients. No columella was used in the other 11 patients. After tympanoplasty, CT demonstrated normal appearance in 8 patients. Of the other 20 patients, 16 were diagnosed with chronic otitis media, and 4 were diagnosed with recurrent cholesteatoma on the basis of follow-up CT examinations. Seven underwent reoperation. In all 4 patients with recurrent cholesteatoma, the diagnosis was pathologically confirmed at reoperation. In 1 patient diagnosed with chronic otitis media, the pathological diagnosis was recurrent cholesteatoma. The columellae in 8 of the 17 patients could not be identified on CT because of surrounding soft tissue mass, but in the other 9 patients the condition of the ossicular reconstruction was well demonstrated. Prosthesis dislocation was apparent in 2 patients. We recommend HRCT examination in the follow-up of tympanoplasty patients.