研究キーワード脳機能画像・functional brain mapping・Head and neck cancer・inner ear disease・minimum invasive surgery・ヒト乳頭腫ウイルス・低侵襲外科・内耳疾患・内視鏡下鼻副鼻腔手術・頭頸部癌発癌因子
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最近の論文・著作
甲状腺乳頭癌に併発した気管原発粘表皮癌の一例2024 · Primary tracheal carcinoma is a rare malignant tumor; among all malignant tumors, it is reported to occur account for 0.04% of malignancies in Japan and 0.1% in Europe and the United States, with squamous cell carcinoma, accounting for 45%, and adenoid cystic carcinoma, accounting for 41%. We report the case of a 79-year-old woman with papillary thyroid carcinoma, cT4aN0M0 (right recurrent), with laryngeal nerve and tracheal wall invasion, The patient underwent total thyroidectomy, right recurrent laryngeal nerve resection, and tracheal fenestration. On the 16th postoperative day, when attempting to remove the cannula, dyspnea developed, and the bilateral vocal cords were observed. The patient was diagnosed with paralysis. This did not improve despite follow-up. The patient was referred to our hospital for glottis surgery. Preoperative computed tomography (CT) images showed a mass protruding from the left wall of the trachea into the lumen, and pretracheal lymphadenopathy, suggesting intratracheal recurrence of papillary thyroid carcinoma and cervical lymph node metastasis. Therefore, glottis surgery was temporarily suspended and tumor resection (tumor resection including combined resection of the trachea and reconstruction of the tracheal wall using a DP flap) was planned and the operation was performed. A pathological examination revealed papillary carcinoma lymph node metastasis in the pretracheal lymph nodes, but the tumor tissue in the trachea was found to be low-grade mucoepidermoid. carcinoma, not papillary carcinoma. In the present case an intratracheal lesion after surgery for papillary thyroid carcinoma was identified as primary mucoepidermoid carcinoma of the trachea.
Utility of Ultrahigh-Resolution Computed Tomography for Laryngeal Reconstructive Surgery.2024 · OBJECTIVE: Unilateral vocal fold paralysis (UVFP) presents as incomplete glottal closure and leads to breathy hoarseness. Various treatments, including laryngeal framework surgery (type 1 thyroplasty [TP1] and arytenoid adduction [AA]), have been devised to correct this condition. Ultrahigh-resolution computed tomography (U-HRCT) allows detailed three-dimensional imaging of the larynx, which aids our understanding of vocal fold motion disorders. This study assessed whether U-HRCT is beneficial for correct diagnosis and surgical planning. METHODS: The participants were 26 UVFP patients who underwent laryngeal framework surgery (TP1 and/or AA). U-HRCT was used to measure the vocal fold volume (VFV) and level difference (LD). The need to combine AA with TP1 to obtain satisfactory surgical outcomes was evaluated by U-HRCT and various voice function tests. RESULTS: VFV was smaller in paralyzed folds than in unaffected folds. LD correlated strongly with voice parameters and showed high intra-rater and inter-rater reliability. The surgical outcome of the laryngeal framework surgery performed was judged to be excellent for improving voice function. Comparison of LD between the TP1 group and TP1 + AA group indicated that LD is an excellent parameter to determine the need to combine AA with TP1. CONCLUSION: These findings underscore the value of preoperative U-HRCT, especially LD, in surgical decision-making and afford insights for optimal phonosurgery and individualized intervention. Patients with LD >1.0 mm may benefit from thyroplasty with AA. LEVEL OF EVIDENCE: Level 3 (case-control study) Laryngoscope, 2024.