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12. 上顎洞内に広範囲に進展したKeratocystic Odontogenic Tumor の１例

Author

YAMADA, SHINCHIRO, UCHIDA, KEIICHI, TAKADA, MASAKI, SHIMADA, KATSUMITSU, OCHIAI, TAKANAGA, SUGINO, NORIYUKI, HASEGAWA, HIROMASA, KAGAMI, HIDEAKI, and TAGUCHI, AKIRA

Subjects
stomatognathic diseases, 角化嚢胞性歯原性腫瘍, 埋伏歯, 上顎洞
Abstract

Odontogenic keratocysts show a marked tendency toward proliferation or biological activity compared with jawbone cysts, being a disease highly recurrent after extirpation, which has been characterized as a cystic tumor. The WHO tissue classification of odontogenic cysts revised in 2005 states that, of previous odontogenic keratocysts, those whose epithelium histologically becomes parakeratotic are keratocystic odontogenic tumors. We encountered a keratocystic odontogenic tumor that had extensively progressed in the right maxillary sinus of a 17–year–old boy. In diagnostic imaging, an opaque image containing an impacted tooth was detected, which seemed to invade the right maxillary sinus. Then, the tumor in the right maxillary sinus was resected with a radical operation under systemic anesthesia. Histopathological tests showed that the tumor was coated with stratified squamous epithelium presenting with parakeratosis, with no inflammation found in the fibrous connective tissues under the epithelium. Consequently, a keratocystic odontogenic tumor was diagnosed. The postoperative course was favorable, with no recurrence as of 1 year and 8 months after the operation.

Published
2016

14. 病理組織学的検査により腺性歯原性嚢胞と診断された1 例

Author

SAITO, ANNA, NAKAYAMA, YOKO, SHIMOJI, SHIGEHIRO, TAKADA, MASAKI, MORI, KOZUE, SHIMADA, KATSUMITSU, OCHIAI, TAKANAGA, HASEGAWA, HIROMASA, YOSHIZAWA, MICHIKO, and SHINOHARA, ATSUSHI

Subjects
parasitic diseases, 下顎骨, 腺性歯原性嚢胞, 病理組織学的検討
Abstract

Glandular odontogenic cyst (GOC) is a rare odontogenic cyst, classified as a developmental odontogenic cyst by the WHO histological typing of odontogenic tumours in 1992. GOC generally occurs in the mandible and arises in each age. The clinical differential diagnosis of odontogenic tumor and cyst is important however, it is difficult to discriminate between them in clinical and radiographical findings. Thus, pathological searches become an essential step for the definite diagnosis. We report a case of GOC, that primary diagnosis was dentigerous cyst by biopsy, but the definite diagnosis was GOC after total extirpation of cyst. Because of a high recurrence rate of GOC, the patients should be followed for a long term.

Published
2016

16. 頬粘膜咬傷に起因した頬部蜂窩織炎の1例

Author

UCHIDA, KEIICHI, TAKADA, MASAKI, OCHIAI, TAKANAGA, SUGINO, NORIYUKI, KUROIWA, HIROKO, YAMADA, SHINICHIROU, NAKANO, KEISUKE, KAGAMI, HIDEAKI, SHINOHARA, ATSUSHI, HASEGAWA, HIROMASA, and TAGUCHI, AKIRA

Subjects
stomatognathic diseases, stomatognathic system, 蜂窩織炎, 頬粘膜, 咬傷
Abstract

Recently, the development of various antibiotics and increasing awareness of oral hygiene have reduced the incidence of serious cellulitis of the cheek, including dental infections. However, some cases invoive serious disease throughout the mediastinal area in elderly patients and those with underlying diseases. This time, we report a case of cellulitis of the cheek due to a bite to the buccal mucosa. The patient was a 10–year–old male. The patient visited hospital and complained of swelling of the left cheek. At the first examination, diffuse redness and swelling accompanied by spontaneous pain and tenderness from the left cheek to surrounding area of the left orbit as well as trismus and swollen lymph nodes in the left submaxillary were noted. A crateriform traumatic ulcer with a diameter of 2.₅ cm and induration likely due to a bite of the left buccal mucosa and accompanied by tenderness were found. CT revealed a high–density region of the buccal fat layer in the left buccal soft tissues as well as extensive and significant swelling and inflammatory reaction. The infusion of antibiotics, draining the abscess through an incision, and the drainage procedure resulted in effective healing of the cellulitis 6 days after admission. Traumatic ulcer and cellulitis may recur due to bite. In addition, for the prevention of adverse habits including teeth grinding and clenching, as well as mental factors due to mental tension and frustration, it is very important to not only undergo dental or oral surgical treatments, but also to consult a psychotherapist or psychiatrist.

Published
2014

17. 小児に発症した下顎骨のGarré 骨髄炎のエックス線学的検討

Author

UCHIDA, KEIICHI, YAMADA, SHINICHIRO, SUGINO, NORIYUKI, KUROIWA, HIROKO, TAKADA, MASAKI, KAGAMI, HIDEAKI, SHINOHARA, ATSUSHI, and TAGUCHI, AKIRA

Subjects
Garré 骨髄炎, stomatognathic diseases, stomatognathic system, 下顎骨骨髄炎, 小児
Abstract

We report a case of Garré osteomyelitis of the mandible involving a child. The patient was a 12–year–old girl with symptoms of swelling and pain of the left face. She presented to our hospital with asymmetrical swelling and tenderness and redness from the left cheek to the lower jaw, and tenderness of the left submandibular lymph nodes. Panoramic radiography revealed a well–demarcated radiolucent lesion that continued to the periodontal space of the second molar of the left mandible and was surrounded by a diffuse osteosclerotic area. In addition, cone beam CT images showed an onion peel–like periosteal reaction on the buccal side of the left mandible near this radiolucent lesion. A diagnosis of cellulitis of the left cheek and Garré osteomyelitis of the mandible was determined based on clinical and imaging findings. A cephem antibiotic (D.I.V.) and oral antibacterial drugs were started to improve inflammation. The symptoms promptly improved on the 4th day after the starr of treatment. It was reported that conservative therapy is appropriate treatment to repair tissues from the viewpoint of jaw development as well as the process of tooth formation in children. An early diagnosis based on specific findings like an onion peel appearance on imaging is required for effective treatment of osteomyelitis of the mandible in childhood.

Published
2014

18. Assessment of multiple cytochrome P450 activities in metabolically inactivated human liver microsomes and roles of P450 2C isoforms in reaction phenotyping studies

Author

Murayama, Norie, primary, Yajima, Kanako, additional, Hikawa, Mikiko, additional, Shimura, Kanami, additional, Ishii, Yu, additional, Takada, Masaki, additional, Uno, Yasuhiro, additional, Utoh, Masahiro, additional, Iwasaki, Kazuhide, additional, and Yamazaki, Hiroshi, additional

Published
2017
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38. Two new heterothallic Neosartoryafrom African soil

Author

Takada, Masaki, Horie, Yoshikazu, and Abliz, Paride

Abstract

Neosartorya nishimuraeand N. otanii, two new heterothallic species isolated from African forest soil, are described and illustrated. Neosartorya nishimuraeis characterized by its rapid growth on Czapek and malt extract agars, white cleistothecia, lenticular ascospores with two broad equatorial crests and echinulate convex surfaces, and large ellipsoidal conidia with a lobate-reticulate wall. Neosartorya otaniiis characterized by its rapid growth on Czapek and malt extract agars, lenticular ascospores with two widely separated equatorial crests and tuberculate or lobate-reticulate convex surfaces, and globose to broadly ellipsoidal conidia with a micro-tuberculate wall.

Published
2001
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39. Field Effect Mobility of F16PcCuFilms in Various Gas Atmospheres

Author

TADA, HIROKAZU, TOUDA, HIROSHI, TAKADA, MASAKI, and MATSUSHIGE, KAZUMI

Abstract

The electron mobility of hexadecafluorophthalocyaninato-copper (F16PcCu)films was evaluated based on field effect measurements in vacuum and in various gas atmospheres. An Arrhenius plot of the mobility showed that the carrier transport followed a thermally activated hopping mechanism with an activation energy of 0.28 eV. The mobility evaluated for freshly prepared films in ultrahigh vacuum was 2.0 × 10−3cm2V−1s−1at room temperature. The electrical conductivity and carrier density were 4.4 × 10−5S cm−1and 1.4 × 1017cm−3respectively. The high carrier density indicated the existence of impurities acting as electron donors in the films. The field effect carrier mobility increased to 5.7 × 10−3cm2V−1s−1in NH3atmosphere (100%, 1 atm) and decreased by 75% in the presence of O2gas (100%, 1 atm). A quick recovery of mobility was observed when the gas molecules were evacuated, indicating a low capability of gas adsorption.

Published
1999

40. A NEW ANTIBIOTIC, TALARON

Author

MIZUNO, KIMIO, primary, YAGI, AKIRA, additional, TAKADA, MASAKI, additional, MATSUURA, KAZUO, additional, YAMAGUCHI, KIYOZUMI, additional, and ASANO, KATSUMI, additional

Published
1974
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