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Dive into the research topics where Masaatsu Yagi is active.

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Featured researches published by Masaatsu Yagi.


Journal of Oral and Maxillofacial Surgery | 1990

Secondary reconstruction of the alveolar process after correction of mandibular discontinuity defects

Takanori Ohya; Masaatsu Yagi; Kazuya Takenaka; Yukio Fujioka

Mandibular defects in six patients were immediately reconstructed with pure titanium reconstruction plates and autogenous iliac bone blocks. However, an alveolar process adequate for functional fitting of a denture did not form. More than 6 months after the reconstruction, correction of the ridge deficiency was attempted using autogenous particulate iliac cancellous bone and marrow combined with hydroxylapatite particles. By this secondary reconstruction, a functional well-fitting denture could be constructed for all six patients. After more than 2 years no evidence of resorption or infection has occurred.


Plastic and Reconstructive Surgery | 2000

Long-term restoration of masticatory function with fixed mandibular implants in cases of oral cancer.

Takanori Ohya; Yoshiyasu Fukuta; Katsunori Seki; Tomoyuki Aomura; Masaatsu Yagi; Keigo Kudo; Kimio Sakamaki; Hisatoshi Tanaka

The results of the present study show that the fixed mandibular implant system enables patients who have operations to treat oral cancer to use a stabilized denture continuously over an extended period of time.


Journal of Japan Society for Oral Tumors | 1999

A locally advanced tongue cancer responding to combination chemotherapy with UFT-E granule and Leucovorin tablet.

Yoshihito Ishikawa; Yukinobu Okada; Yoshiyasu Fukuta; Masaatsu Yagi; Nobuhiro Takeda; Kyuuji Hurihata; Keigo Kudo

患者は68歳の女性で, 左側舌側縁に高分化型扁平上皮癌 (T3N0M0) を認めた。初診時よりUFT-E顆粒450mg/日の経口投与を開始し, 腫瘍の縮小傾向がみられたため3週間後よりbiochemical modulationによる腫瘍縮小効果増強を期待しLeucovorin 30mg/日を併用した。腫瘍は臨床的に消失したため, 全麻下に舌部分切除術を施行した。退院後, 義歯を装用し, 会話や嚥下機能にも特に問題ない。現在術後5年2か月を経過しているが再発や転移を認めず良好に経過している。


Journal of Japan Society for Oral Tumors | 1991

Combined treatment for two advanced carcinomas of the buccal mucosa with local hyperthermia.

Kiyoshi Segawa; Yoshiyasu Fukuta; Masaatsu Yagi; Yoshihiro Saito; Tomoyuki Aomura; Mitsumasa Yokota; Takanori Ohya; Keigo Kudo; Yukio Fujioka; Kimio Sakamaki

頬粘膜進展癌の2例に対し温熱療法を組み入れた集学治療を施行し, 良好な経過を辿っているので報告する。症例1: 61歳, 男性。高分化型扁平上皮癌 (T3N2bM0) で, 治療はPM療法5クール (PEP1回2.5mg計72.5mg, MMC1回10mg計50mg) , 60Co36Gy, 温熱療法を頬部に5回, 頸部に6回, OK-432を総量44.5KE投与し, 左側全頸部郭清, 腫瘍切除, D―P皮弁による頬部全層欠損の即時再建術を施行した。症例2: 69歳男性, 高分化型扁平上皮癌 (T4N2bM0) 。右側浅側頭動脈を用いてCDDP150mg, PEP70mg, 5-FU1回125mg計2000mgを動静注し, 60Co照射を頬部, 頸部にそれぞれ40.5Gy, 60.5Gy併用した。さらに温熱療法を頸部に9回併用し, OK-432を術前に総計40.4KE投与した。1988年6月7日, 右側全頸部郭清, 腫瘍切除, 植皮術を施行した。初診より4年と2年7か月経過した現在、再発・転移なく経過良好である。2例とも重大な合併症も無く, 予定の化学療法, 放射線療法が施行でき, 根治的手術が可能であったことが良好に経過している要因と考えられた。


Journal of Oral Science | 2013

Congenital peripheral developing odontoma accompanied by congenital teratomatous fibroma in a 9-month-old boy: a case report

Toshinari Mikami; Masaatsu Yagi; Harumi Mizuki; Yasunori Takeda


Japanese Journal of Oral & Maxillofacial Surgery | 1998

Clinical investigation of causes of temporomandibular joint dislocation in patients with psychic and cerebral diseases

Yoshihito Ishikawa; Yusuke Higuchi; Tomoyuki Aomura; Masaatsu Yagi; Mitsuhiro Endo; Kenji Sasahara; Yuji Sato; Takanori Oya; Keigo Kudo


Japanese Journal of Oral and Maxillofacial Surgery | 2016

A case of carcinoma ex pleomorphic adenoma of the palate composed of basal cell adenocarcinoma and squamous cell carcinoma

Ryosuke Abe; Hirotaka Sato; Shintaro Kogi; Masaatsu Yagi; Genki Yamaya; Harumi Mizuki


Japanese Journal of Oral and Maxillofacial Surgery | 2016

A case of synovial sarcoma arising in the submucosal region of the lower lip

aki Abe; Ryosuke Abe; Tomoyuki Aomura; Masaatsu Yagi; Emi Nakata; Harumi Mizuki


Japanese Journal of Oral and Maxillofacial Surgery | 2015

A case of ameloblastic carcinoma primary type of the mandible in a 15-year-old boy

Ryosuke Abe; Masaatsu Yagi; Daishi Saito; aki Abe; Harumi Mizuki; Yasunori Takeda


Japanese Journal of Oral & Maxillofacial Surgery | 2000

A case of T-cell malignant lymphoma of the maxilla.

Kiyoshi Tamura; Takanori Oya; Yoshiyasu Fukuta; Kazushi Namioka; Hiroki Miyate; Masaatsu Yagi

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Keigo Kudo

Iwate Medical University

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Takanori Ohya

Iwate Medical University

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Yukio Fujioka

Iwate Medical University

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Harumi Mizuki

Iwate Medical University

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Ryosuke Abe

Iwate Medical University

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Hiroki Miyate

Iwate Medical University

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