Search

Your search keyword '"Noriyoshi Kawamura"' showing total 18 results
Start Over Author "Noriyoshi Kawamura"
18 results on '"Noriyoshi Kawamura"'

1. Brain, Spinal Cord and Labyrinthine Concussion in Sports

Author

Shunji Asamoto, Jun MUTO, Takashi Arai, Takahiro Endo, Hiroyuki Muramatsu, Yasuyuki Okumura, Noriyoshi Kawamura, Yoshinori Arai, Hiroshi Doi, and Yasuyuki Fukui

Subjects
human activities
Abstract

In this paper, we discuss the 3 types of concussion that occur in sports; brain concussion, spinal concussion (spinal cord neurapraxia), and labyrinthine (inner ear) concussion. Brain concussion data was collected from professional ice hockey players (Tohoku Free Blades, Japan) during 9 consecutive seasons. Spinal cord concussion and Labyrinthine concussion data was collected from athletes who sustained the injury in various sports including ice hockey. Material and methods The average incidence of brain concussion in professional ice hockey players was 2.0 per season. All 13 cases of spinal cord concussion were cervical cord concussion. Seven cases showed evidence of spinal cord compression; six cases had no radiological abnormality observed. All cases of labyrinthine concussion were sustained through a traumatic blow to the lateral aspect of the head. Results In any sports injury, all three of these concussions can co-exist and requires the team doctor to be at the site in order to fully assess the injury.

Published
2021

2. [A Case of a Massive Retropharyngeal Hematoma Associated with Traumatic Cervical Cord Injury]

Author

Takashi, Arai, Shunji, Asamoto, Yasuyuki, Fukui, Takahiro, Endo, Kinya, Oshida, Yoshinori, Arai, Noriyoshi, Kawamura, Yasuyuki, Okamura, Hiroyuki, Muramatsu, Hiroshi, Doi, and Takakazu, Kawamata

Subjects
Male, Neck Injuries, Hematoma, Anticoagulants, Cervical Cord, Humans, Pharyngeal Diseases, Aged
Abstract

Retropharyngeal hematomas are uncommon, but they may rarely cause occlusion of the upper airway and threaten life. Retropharyngeal hematomas often occur due to head or neck injury;they rarely occur due to iatrogenic causes such as insertion of a gastric tube or anticoagulant therapy. It has been found that patients receiving anticoagulant therapy are more likely to experience potentially severe retropharyngeal hematomas. We report the case of a patient with retropharyngeal hematoma with cervical cord damage. A 75-year-old man was transferred to our hospital after he sustained a fall and damaged his face. CT showed a massive retropharyngeal hematoma, but he did not complain of any breathing issues. Therefore, we selected conservative therapy. However, after approximately 4 hours, he suddenly complained of breathing problems and suffered from loss of consciousness. We performed intubation and provided sedation. After one week, his condition clearly improved and he was extubated.

Published
2020

3. The Influence of Age on the Outcomes of Traumatic Brain Injury: Findings from a Japanese Nationwide Survey (J-ASPECT Study-Traumatic Brain Injury)

Author

Keitaro Yamagami, Ryota Kurogi, Ai Kurogi, Kunihiro Nishimura, Daisuke Onozuka, Nice Ren, Akiko Kada, Ataru Nishimura, Koichi Arimura, Keisuke Ido, Masahiro Mizoguchi, Tetsuya Sakamoto, Takamasa Kayama, Michiyasu Suzuki, Hajime Arai, Akihito Hagihara, Koji Iihara, Masayoshi Takigami, Kenji Kamiyama, Kiyohiro Houkin, Shougo Nishi, Tetsuyuki Yoshimoto, Sadao Kaneko, Koji Oka, Hiroshi Ooyama, Kyousuke Kamada, Kenichi Makino, Naoki Tokumitsu, Kazuhiro Sako, Susumu Suzuki, Nozomi Suzuki, Naoto Izumi, Kazumi Nitta, Masahumi Ootaki, Masanori Isobe, Mikio Nishiya, Takaaki Yamazaki, Syouji Mabuchi, Kuniaki Ogasawara, Naohiko Kubo, Yukihiko Shimizu, Keiichi Saito, Tatumi Yamanome, Atsuo Yoshino, Mitsuyuki Fujitsuka, Masaaki Takami, Hirotoshi Ohtaka, Teruyuki Hirano, Yosiaki Shiokawa, Takaharu Okada, Ichiro Suzuki, Michihiro Kohno, Jou Haraoka, Yoshinori Arai, Noriyoshi Kawamura, Akira Isoshima, Masaharu Yasue, Mitsuhiko Hokari Takayoshi Kobayashi, Kensuke Kawai, Taketoshi Maehara, Makoto Noguchi, Haruhiko Hoshino, Hirofumi Hiyama, Kensaku Yoshida, Osamu Utsugi, Yasuaki Takeda, Kouichi Tamaki, Hirohide Karasudani, Takao Urabe, Shiro Kobayashi, Michio Nakamura, Yorio Koguchi, Junichi Ono, Sumio Suda, Hiromu Hadeishi, Toshio Fukutake, Kenji Wakui, Hirokazu Tanno, Naoki Ishige, Takashi Ohasi, Hideki Sakai, Yasuaki Nishimura, Takayuki Watanabe, Takashi Matsumoto, Naoki Koketsu, Yuichi Hirose, Manabu Doyu, Toshinori Hasegawa, Naoto Kuwayama, Shinichi Terao, Nobuhiko Mizutani, Noriyuki Suzaki, Satoshi Okuda, Keizo Yasui, Yukio Seki, Yasuhiro Hasegawa, Akira Ikeda, Youtarou Takeuchi, Sigeki Ohara, Yoshio Araki, Toshihiko Wakabayashi, Hisashi Tanaka, Junpei Yoshimoto, Makoto Sugiura, Ogura Koichiro, Nozomu Kobayashi, Tomonori Yamada, Amami Kato, Ohtsuki Toshiho, Akatsuki Wakayama, Jun Takahashi, Hiroharu Kataoka, Toshiki Yoshimine, Yoshikazu Nakajima, Hidehuku Gi, Ryunosuke Uranishi, Yusaku Nakamura, Kazunori Yamanaka, Kazumi Ohmori, Hiroyuki Matsumoto, Yoshitugu Oiwa, Yosihiko Uemura, Hiroaki Fujiwara, Yoshiyasu Iwai, Masashi Morikawa, Kazuyuki Tane, Kazuo Hashikawa, Toshiyuki Fujinaka, Shunichi Yoneda, Kohsuke Yamashita, Masahiko Kitano, Shinsuke Tominaga, Kazuhito Nakamura, Katsuhiko Kono, Kenji Ohata, Hirokatsu Taniguchi, Takanori Hazama, Toshihiko Kuroiwa, Yoji Tamura, Kazusige Maeno, Motohiro Arai, Masaaki Iwase, Kenji Hashimoto, Keisuke Yamada, Takashi Turuno, Tsutomu Ichinose, Shinichiro Kurokawa, Takeshi Matsuyama, Toshiaki Fujita, Takamichi Yuguchi, Yoshihumi Teramoto, Hiroto Kakita, Takayuki Matsuo, Tsuyoshi Izumo, Nobutoshi Ryu, Wataru Haraguchi Naoki Kitagawa, Makio Kaminogo, Seisaburo Sakamoto, Yosiharu Tokunaga, Ei-Ichirou Urasaki, Junichi Kuratsu, Akira Takada, Tadashi Terasaki, Isao Fuwa Hisami Oosima, Shigeo Yamashiro, Makoto Yoshikawa Hiromasa Tsuiki, Kazunari Koga, Hiroshi Egami, Tadao Kawamura, Kunihiko Mitsuo, Takamitu Hikawa Masaki Morisige, Yuu Takeda, Yutaka Yamaguchi, Shiro Miyata Shunro Uchinokura, Tomokazu Goya, Hideo Takeshima, Kazutaka Yatsushiro, Hajime Ohta, Tatsui Nagadou, Kazuho Hirahara, Souichi Obara, Hiroshi Seto, Koiti Moroki, Kazunori Arita, Shogo Ishiuchi, Toshimitsu Uchihara, Susumu Mekaru, Tomoaki Nagamine, Naoki Tomiyama Jin Momoji, Kouzi Idomari Atusi Kimoto, Tsutomu Kadekaru, Hirosi Syamoto, Osamu Sasaki, Makoto Minagawa, Hideaki Takahashi, Kiyoshi Onda Hiroyuki Arai, Shigekazu Takeuchi, Hiroshi Abe, Osamu Fukuda, Mitsuo Kouno, Tetsuro Tamura, Yukio Horie Michiya Kubo, Hiroaki Hondo, Hisashi Takada, Toru Masuoka, Naoki Shirasaki, Hisashi Nitta, Makoto Kimura Yasuo Katsuki, Yutaka Hayashi Hisato Minamide, Shigeru Munemoto, Kiyonobu Ikeda, Mitsutoshi Nakada Yutaka Hayashi, Syuji Sato, Taketo Hatano, Osamu Yamamura, Masanori Kabuto, Takahiro Sakuma Jyunya Hayashi, Hiroyuki Kinouchi, Hidehito Koizumi, Syougo Imae, Manabu Fujita, Masakazu Suga, Shinji Iwata Kanehisa Kohno, Kiichiro Zenke, Mutsuo Fujisawa, Hikaru Mizobuchi, Satoru Hayashi, Masanori Morimoto, Tetsuya Ueba, Hiroyuki Nishimura, Naoki Ikawa, Yuzo Matsumoto, Seiji Kannuki, Masahiro Kagawa, Naoki Hayashi, Takashi Tamiya Atsushi Shindo, Kimihiro Yoshino, Tetsuya Masaoka, Ichiro Nakahara, Akira Nakamizo Satoshi Suzuki, Yuji Okamoto, Haruki Takahashi, Katsuyuki Hirakawa, Shinji Nagata, Akio Ookura, Hidenori Yoshida Yoshiro Kaneko, Hiroshi Nakane, Isao Inoue, Tsutomu Hitotsumatsu, Terukazu Kuramoto Kouichi Kuramoto, Yoshihisa Matumoto Hiromichi Ooishi, Tooru Inoue Masani Nonaka, Motohiro Morioka, Hiroshi Sugimori Shuji Sakata, Hiroshi Takashima, Shin-Ichiro Ishihara, Kenji Suzuyama, Masayuki Miyazono, Masafumi Morimoto Itaro Hattori, Satoshi Ozaki, Nobuo Hirota, Yasunori Takemoto Yasuhiko Mochimatsu, Makoto Takagi, Isao Yamamoto Kenji Nakayama, Yoshinori Uchida Hiroshi Tanaka, Katsumi Sakata, Kawahara Nobutaka, Motohiro Nomura, Hitoshi Ozawa, Kotaro Tsumura, Makoto Inaba Michiyuki Maruyama, Tatsuro Mori, Takahisa Mori, Masato Sugitani, Yuichiro Tanaka, Masaru Yamada, Mitsunori Matsumae, Keiichirou Onitsuka, Kosuke Miyahara Tatsuya Takahashi, Sumio Endou, Hidekazu Takahashi, Hiroyuki Kaidu, Akira Tsunoda Chikashi Maruki, Takamitsu Fujimaki, Hidetoshi Ooigawa, Masahiko Tanaka Masatsugu Uchida, Hiroshi Wanihuti Kouiti Katoh, Akio Hyodo, Ken Asakura, Shigeyoshi Nakajima, Takao Kanzawa, Hideyuki Kurihara, Sigehiro Ohmori, Mitsugi Yoshinao Hiroshi Kusunoki, Satoshi Magarisawa, Shinichi Okabe, Yuuji Kujiraoka, Shin Tsuruoka, Mikihiko Takeshita, Tetsuya Yamamoto Akira Matsumura, Kazuya Uemura, Hitoshi Tabata, Makoto Sonobe, Masashi Nakatsukasa Ryoji Yoshida, Norifumi Shimoeda, Hideo Kunimine, Masayuki Ishihara, Nozomu Murai, Nobukuni Murakami, Minoru Kidooka, Yoshihiro Iwamoto, Hiroshi Tenjin, Kouji Shiga Masahiko Takamasu, Nobuhito Mori, Shigeru Kose, Eiji Kohmura, Keigo Matsumoto, Takayuki Sakaki, Hiroji Miyake, Eiichiro Mabuchi, Masayuki Yokota, Hideyuki Ohnishi Yosihiro Kuga, Mitsuru Kimura, Osamu Narumi Masaaki Saiki, Norio Nakajima, Minoru Asahi, Junji Koyama, Shinya Noda, Junichi Iida, Toyohisa Fujita, Hiroyuki Nakase, Hidehiro Hirabayashi Toru Hoshida, Takayoshi Fujimoto, Naoyuki Nakao, Yoshiyuki Tanaka, Fuminori Ozaki, Yoshinari Nakamura, Kazuhito Miki, Takashi Watanabe, Seiko Hasegawa, Hiromu Konno, Atsuhito Takemura, Atsuya Okubo, Hitoshi Saito, Tatsuya Ishikawa Taizen Nakase, Hiroaki Shimizu Toshio Sasajima, Masayuki Sasou, Yoichi Watanabe, Taku Sato Kiyoshi Saito, Satoshi Taira Masahiro Satoh, Takayuki Koizumi, Yasuhiro Suzuki Shoji Mashiyama, Tomoyoshi Oikawa, Yukihiko Sonoda, Rei Kondo Shinjiro Saito, Atsuo Shinoda, Eiichiro Kamatsuka, Keiten So, Toshihiko Kinjo, Tooru Sasaki Kennji Itou, Hidenori Endo Hiroaki Shimizu, Hirosi Karibe, Kou Takahashi, Masayuki Nakajima, Kazuyoshi Watanabe, Motohiro Takayama, Taro Komuro, Hisao Hirai Fumio Suzuki, Hidenori Suzuki, Hiroto Murata, Fumitaka Miya, Kenji Kanamaru, Akira Tamura, Kiyoshi Harada, Seiji Fukazawa, Seiya Takehara, Yoshihiko Watanabe, Teiji Nakayama, Haruhiko Sato Hiroshi Nagura, Shinji Amano Chiharu Tanoi, Katsuhiro Kuroda, Satoru Morooka, Takafumi Wataya Masashi Kitagawa, Kazuo Koide, Tetsuya Tanigawara, Toru Iwama, Junki Ito, Shinji Noda, Kazuyuki Kouno, Kazuo Kitazawa, Yoshikazu Kusano Toshiki Takemae, Masanobu Hokama, Hiroki Sato Yoshihisa Nishiyama, Tatsuya Seguchi, Sumio Kobayashi Yoshihiko Inui, Youji Oohigashi, Shinsuke Muraoka, Masaki Miyatake, Kensuke Hayashida Nakagawa Shinichi, Atsushi Inoue, Keiichi Sakai, Shuhei Yamaguchi, Tatsuya Mizoue Fusao Ikawa, Gen Ishida Hideki Irie, Takato Kagawa, Yoichiro Namba, Hiroyuki Nakashima, Isao Date Koji Abe, Masaaki Uno, Masaki Chin Sen Yamagata, Hidemiti Sasayama Soitiro Takao, Hideyuki Yoshida Kouji Muneda, Akira Watanebe, Syouichi Katou, Yasuhiro Hamada, Takafumi Nishizaki, Katsuhiro Yamashita, Takaharu Nakamura Ryuji Nakamura, Shinichi Wakabayashi, Takahito Okazaki, Kaoru Kurisu, Masayasu Matsumoto, Atsushi Tominaga Katsuzo Kiya, Masaaki Shibukawa Syuichi Oki, Toshinori Nakahara, Shinji Okita, Tuyosi Torii, Minoru Nakagawa Kenjirou Fujiwara, Takashi Matsuoka Syuuhei Nishimura, Osamu Hamasaki Naoyuki Isobe, Junichiro Satomi Shinji Nagahiro, Masahito Agawa, Hirofumi Oka, Kunikazu Yoshimura, Tsutomu Kato, Nobuaki Kobayasi Satoshi Minoshima, Nobuhiro Mikuni, Rokuya Tanikawa, Jyunkou Sasaki, Yasunari Otawara, Teiji Tominaga, Tatsuya Sasaki, Sunao Takemura, Masahisa Kawakami, Satoshi Ihara, Yasushi Shibata, Takashi Saegusa, Toshihiko Iuchi, Chiaki Ito, Osamu Okuda, Kazunari Yoshida, Sadao Suga Masateru Katayama, Oikawa Akihiro, Naohisa Miura, Takahiro Ota, Toshihiro Kumabe, Sachio Suzuki, Takashi Kumagai, Keiichi Nishimaki, Kazuhiro Hongo, Hiroaki Shigeta, Kazuyoshi Hattori, Yoichi Uozumi, Norimoto Nakahara, Nobukazu Hashimoto, Shinichi Shirakami Shu Imai, Yoshinari Okumura, Ryo Tamaki Kazuhiro Yokoyama, Susumu Miyamoto, Kazuo Yamamoto, Tsugumichi Ichioka, Tsuyoshi Inoue, Manabu Kinoshita, Minoru Saitoh, Hideo Aihara, Hajimu Miyake, Kotaro Ogihara Tukasa Nishiura, Shigeki Nishino, Yasuyuki Miyoshi, Tadashi Arisawa, Shigeru Daido Shoji Tsuchimoto, Kimihisa Kinoshita, Kiyoshi Yuki Keisuke Migita, Keiichi Akatsuka, Hirosuke Fujisawa, Tadahisa Shono, Hitoshi Tsugu, Shuji Hayashi, Tatsuya Abe Toshio Matsushima, Susumu Nakashima, Takehisa Tuji, Akihiko Kaga, Reizou Kanemaru, Koji Takasaki, Junichi Imamura, Masahiro Noha, Saburo Watanabe, Nobuyuki Sakai, Yasuhisa Yoshida Hiroaki Minami, Tomoyoshi Okumura, Shinjitsu Nishimura, Shinichi Numazawa, Kiyoshi Kazekawa Masanori Tsutsumi, Kouzou Fukuyama, and Yasuhiro Fujimoto

Subjects
Adult, Male, medicine.medical_specialty, Adolescent, Databases, Factual, Traumatic brain injury, Nationwide survey, 03 medical and health sciences, Young Adult, 0302 clinical medicine, Level of consciousness, Japan, Surveys and Questionnaires, Epidemiology, Brain Injuries, Traumatic, medicine, Humans, Hospital Mortality, Child, Aged, Retrospective Studies, Aged, 80 and over, Univariate analysis, business.industry, Neurological status, Glasgow Coma Scale, Age Factors, Infant, Newborn, Infant, Odds ratio, Middle Aged, medicine.disease, Patient Discharge, 030220 oncology & carcinogenesis, Child, Preschool, Emergency medicine, Surgery, Female, Neurology (clinical), business, 030217 neurology & neurosurgery
Abstract

The epidemiology of patients with traumatic brain injury (TBI) has changed dramatically over recent decades as a result of rapid advances in aging societies. We assessed the influence of age on outcomes of patients with TBI and sought to identify prognostic factors for in-hospital mortality of TBI among elderly patients.Using a nationwide database, we analyzed data from 5651 patients with TBI. Univariate analysis was conducted to compare patient demographics, neurologic status on admission, radiologic findings, systemic complication rates, length of hospital stay, in-hospital mortality, and home discharge rates between elderly and nonelderly groups. Multivariable analysis was conducted to determine prognostic factors for in-hospital mortality among elderly patients.Overall in-hospital mortality was significantly higher in elderly patients (12.8% vs. 19.3%; P0.001). In-hospital mortality of elderly patients with mild TBI increased significantly at7 days after admission, whereas that of elderly patients with moderate or severe TBI was significantly higher immediately after admission. Age (odds ratio [OR], 1.62; P = 0.024), male sex (OR, 1.30; P = 0.004), Japan Coma Scale score on admission (OR, 5.95, P0.001), and incidence of acute subdural hematoma (OR, 1.89; P0.001) were associated with in-hospital mortality in elderly patients with TBI.Elderly patients with TBI showed significantly higher in-hospital mortality. Delayed increases in in-hospital mortality were observed among elderly patients with mild TBI. Level of consciousness on admission was the strongest predictor of in-hospital mortality among elderly patients.

Published
2019

4. Transnasal Reoperations for Fibrous Pituitary Adenomas : Preliminary Experiences using Both Micro-pressure-suction-irrigation System and Needle Type Ultrasonic Surgical Aspiration

Author

Munetaka Hayashi, Youichi Imaizumi, Hitoshi Izumiyama, Yosinori Nakamura, Kiyoshi Matsumoto, Satoru Fujitani, Takumi Abe, Hisato Ikeda, and Noriyoshi Kawamura

Subjects
Suction (medicine), medicine.medical_specialty, Transnasal approach, business.industry, medicine, Needle type, Surgery, Ultrasonic Surgical Aspiration, Neurology (clinical), business
Published
2001

5. Dorsum sellae meningioma mimicking pituitary macroadenoma: case report

Author

Kiyoshi Matsumoto, Takumi Abe, Takanobu Iwata, Noriyoshi Kawamura, Hideki Homma, and Shigeru Nemoto

Subjects
Adenoma, medicine.medical_specialty, medicine.medical_treatment, Middle meningeal artery, Dorsum sellae, Diagnosis, Differential, Meningioma, stomatognathic system, Pituitary adenoma, medicine.artery, Meningeal Neoplasms, medicine, Humans, Pituitary Neoplasms, Sella Turcica, Embolization, Bitemporal hemianopsia, Aged, integumentary system, medicine.diagnostic_test, business.industry, medicine.disease, Magnetic Resonance Imaging, Cerebral Angiography, Surgery, stomatognathic diseases, Sella turcica, medicine.anatomical_structure, Angiography, Female, Neurology (clinical), Radiology, business
Abstract

BACKGROUND A dorsum sellae meningioma is a rare occurrence. It is difficult to evaluate dorsum sellae meningiomas preoperatively from the viewpoint of neuroimaging. We report a rare case of dorsum sellae meningioma mimicking pituitary macroadenoma in a 73-year-old woman. CASE PRESENTATION The patient presented with bitemporal hemianopsia and panhypopituitarism. Magnetic resonance imaging demonstrated a bright, homogeneously enhancing intra- and suprasellar mass and a hypointense region in this mass, which was interpreted as a dorsum sellae. Transsphenoidal extirpation was used because of a suspicion of nonsecreting pituitary macroadenoma. Histopathologically, the tumor was diagnosed as a meningioma. Superselective external carotid angiography before the second surgery revealed that the mass was supplied by the left accessory middle meningeal artery and appeared to originate from dorsum sellae. After preoperative embolization, the patient developed hyponatremia. The tumor was subtotally removed via a transcranial route, and the attachment to the dorsum sellae was coagulated extensively. She did well after a second surgical procedure. CONCLUSION These radiologic findings may be useful in differentiating dorsum sellae meningioma from pituitary macroadenoma.

Published
1999

6. Brain Abscess at the Site of Cerebral Infarction : A case Report

Author

Hideki Honma, Motohiko Shimazu, Kiyoshi Matsumoto, Yoshiharu Sawabe, Yasuyuki Okamura, Shinsuke Kobayashi, Hajime Furuya, Noriyoshi Kawamura, Shunji Asamoto, Takanobu Iwata, and Hiroaki Matsumoto

Subjects
medicine.medical_specialty, Cerebral infarction, business.industry, medicine, Surgery, Neurology (clinical), Radiology, medicine.disease, business, Brain abscess
Published
1998

8. MRI of orbital schwannomas

Author

Koji Matsumoto, Noriyoshi Kawamura, Ken Sasaki, Takumi Abe, H Izumiyama, and H Homma

Subjects
Adult, Male, medicine.medical_treatment, Schwannoma, Diagnosis, Differential, otorhinolaryngologic diseases, medicine, Humans, Radiology, Nuclear Medicine and imaging, neoplasms, Craniotomy, Aged, Neuroradiology, medicine.diagnostic_test, business.industry, Magnetic resonance imaging, Middle Aged, medicine.disease, Signal on, eye diseases, nervous system diseases, medicine.anatomical_structure, Homogeneous, Orbital Neoplasms, Female, Neurology (clinical), Differential diagnosis, Cardiology and Cardiovascular Medicine, Nuclear medicine, business, Orbit, Neurilemmoma, Orbit (anatomy)
Abstract

The literature on MRI of orbital schwannomas is limited. The appearances in three patients with an orbital schwannoma were reviewed. A superior orbitotomy through a subfrontal craniotomy revealed a schwannoma in all cases. MRI characteristics of very low signal on T1-weighted images and homogeneous postcontrast enhancement may be helpful for differentiating schwannomas from other intraconal masses.

Published
2000

9. Optic Nerve Decompression for Orbitofrontal Fibrous Dysplasia

Author

Noriyoshi Kawamura, Motohiko Shimazu, Kiyoshi Matsumoto, Hitoshi Izumiyama, Takaharu Otsuka, Kaneshige Sato, and Takumi Abe

Subjects
musculoskeletal diseases, medicine.medical_specialty, Rib cage, Optic canal, genetic structures, business.industry, Fibrous dysplasia, Case Reports, medicine.disease, eye diseases, Surgery, Optic neuropathy, medicine.anatomical_structure, Visual Disturbance, medicine, Optic nerve, sense organs, Craniofacial, business, Optic nerve decompression
Abstract

Orbitofrontal fibrous dysplasia often involves the bony orbit and the optic canal. Although fibrous dysplasia reportedly produces compression of the optic nerve leading to visual distrubances, optic nerve decompression in patients without clinical signs of optic neuropathy is still controversial. We describe two patients with orbitofrontal fibrous dysplasia without signs of visual disturbance and one patient with McCune-Albright syndrome and progressive visual impairment. Optic nerve decompression was performed prophylactically for two patients and therapeutically for one patient through the transcranial extradural route. Dystopias and craniofacial deformities induced by fibrous dysplasia also were corrected. The micropressure suction-irrigation system was especially effective for decreasing heat transfer and thereby preventing thermal injury of the optic nerve. The orbitofrontal area was reconstructed from cranial bone, iliac bone, and ribs. Postoperative follow-up revealed no disturbances in visual function and no evidence of cerebrospinal fluid leakage. These findings suggest that optic nerve decompression may be effective in preventing visual disturbances with minimal risk of other neurological sequelae. Subsequent orbital reconstruction yielded satisfactory cosmetic results.

Published
2002

10. Male prolactinoma with pituitary apoplexy concomitant with intracerebral hemorrhage--case report

Author

Takumi, Abe, Noriyoshi, Kawamura, Hiroshi, Ozawa, Motohiko, Shimazu, Hitoshi, Izumiyama, and Kiyoshi, Matsumoto

Subjects
Male, Pituitary Gland, Putamen, Humans, Pituitary Neoplasms, Prolactinoma, Caudate Nucleus, Middle Aged, Magnetic Resonance Imaging, Pituitary Apoplexy, Cerebral Hemorrhage, Follow-Up Studies
Abstract

A 56-year-old male presented with a prolactin-secreting pituitary adenoma who suffered pituitary apoplexy associated with intracerebral hemorrhage of the caudate head and putamen. The centers of both the intratumoral hematoma and intracerebral hemorrhage appeared as hyperintense on T1-weighted and T2-weighted magnetic resonance imaging, indicating the subacute stage and probably similar timing of onset. The tumor was treated surgically 6 weeks after the onset. The causative factor for the apoplexy remains unclear.

Published
2002

11. Silent mixed corticotroph and somatotroph macroadenomas presenting with pituitary apoplexy

Author

B Xu, Toshiaki Sano, Matsuo Taniyama, Noriyoshi Kawamura, Ken Sasaki, Motohiko Shimazu, Takumi Abe, Hitoshi Izumiyama, J Kuwazawa, Koji Matsumoto, Miki Kushima, and Hiroshi Ozawa

Subjects
Adenoma, Adult, Male, endocrine system, medicine.medical_specialty, Pituitary gland, Pro-Opiomelanocortin, Somatotropic cell, Adrenocorticotropic hormone, Pituitary Hemorrhage, Pathology and Forensic Medicine, Diagnosis, Differential, Cellular and Molecular Neuroscience, Adrenocorticotropic Hormone, Pituitary adenoma, Internal medicine, medicine, Humans, Pituitary Neoplasms, RNA, Messenger, In Situ Hybridization, business.industry, Human Growth Hormone, Pituitary apoplexy, Middle Aged, medicine.disease, Magnetic Resonance Imaging, Endocrinology, medicine.anatomical_structure, Female, Neurology (clinical), Corticotropic cell, business, Pituitary Apoplexy, hormones, hormone substitutes, and hormone antagonists
Abstract

We discuss three unique cases of pituitary macroadenoma presenting with pituitary hemorrhage but without typical endocrine symptomatology. Immunohistochemical analysis indicated positive reactivity for adrenocorticotropic hormone (ACTH) and growth hormone (GH), and in situ hybridization indicated the expression of proopiomelanocortin (POMC) and GH mRNA. We designated these cases silent mixed corticotroph and somatotroph adenoma. Patient 1 was a 30-year-old man, patient 2 was a 29-year-old woman, and patient 3 was a 59-year-old woman. All patients presented with a headache of sudden onset and visual disturbance. The patients did not exhibit typical Cushing's or acromegalic features. Serum ACTH level was remarkably elevated in patient 1, and slightly elevated in patients 2 and 3. In all patients, serum GH levels were within normal range and magnetic resonance imaging revealed an intra- and suprasellar mass with pituitary hemorrhage. Transnasal pituitary surgery in the three patients disclosed a pituitary adenoma producing ACTH and GH. In patient 2, the residual adenoma reappeared along with an intratumoral hemorrhage, and was resected by secondary transnasal surgery. Silent mixed corticotroph and somatotroph adenomas are characterized by the following: no endocrine symptoms; presentation dominated by mass effect symptoms; macroadenoma presenting with acute pituitary hemorrhage; and production of both ACTH and GH.

Published
2001

12. Unmyelinated nerve fiber analysis of the human oculomotor nerve

Author

Akira Wada, Noboru Goto, Kiyoshi Matsumoto, and Noriyoshi Kawamura

Subjects
Neurological signs, Adult, Aged, 80 and over, Male, genetic structures, business.industry, Oculomotor nerve, Unmyelinated nerve fiber, Cell Count, Anatomy, Nerve Fibers, Oculomotor Nerve, Image Processing, Computer-Assisted, Medicine, Humans, Female, business, Myelin Sheath, Aged
Abstract

Unmyelinated nerve fibers of the oculomotor nerve have occasionally been observed in experimental animals with the use of electron microscopes, but no details concerning normal oculomotor nerves in humans have been published. We measured and analyzed unmyelinated nerve fibers in the human oculomotor nerve with an image analyzer and a computer, using a new staining method, the Luxol fast blue-periodic acid-Schiff-hematoxylin (LPH) discriminative staining method which is the only one suitable for morphometric research on nervous tissues. We studied the numbers and transverse areas of unmyelinated fibers of the oculomotor nerve in 20 cadavers. The number of unmyelinated axons did not change with age, but the mean transverse area decreased with age. These fibers were distributed diffusely in the transverse area of the oculomotor nerve, not localized in any part of the nerve. These findings may be important for the analysis of clinical and neurological signs in relation to aging and ophthalmologic functions.

Published
2000

13. Morphometric comparison of the human optic nerve fiber with various other human nerve fibers

Author

Kiyoshi Matsumoto, Norihiko Kunii, Noriyoshi Kawamura, and Noboru Goto

Subjects
Male, genetic structures, Optic chiasm, Nerve fiber, Nerve Fibers, Myelinated, Nerve Fibers, Reference Values, medicine, Image Processing, Computer-Assisted, Humans, Axon, Aged, Aged, 80 and over, business.industry, Optic Nerve, Anatomy, Middle Aged, eye diseases, Axons, medicine.anatomical_structure, Myelin sheath, Reference values, Optic Chiasm, Optic nerve, Optic nerve fiber, Surgery, Female, sense organs, Neurology (clinical), business
Abstract

The morphometric characteristics of nerve fibers of the human optic nerve in the chiasmatic region were measured with the combination of an image analyzer and a computer, using the Luxol fast blue-periodic acid-Schiff-hematoxylin discriminative staining method. The mean axonal transverse area of the human optic nerve fibers was 0.644 +/- 0.361 micron 2. Comparison of the size of the axon of the human optic nerve fiber with that of various other human nerves showed optic nerve fibers were definitely thinner than the other nerve fibers, and were surrounded by a thinner myelin sheath. Optic nerves may be more liable to mechanical damage at surgery that previously believed.

Published
2000

14. Role of 3D-TOF magnetic resonance angiography for intracranial meningioma

Author

Kiyoshi Matsumoto, Hideki Homma, Hisato Ikeda, Noriyoshi Kawamura, Yasushi Horichi, Takumi Abe, Kazuo Hanakawa, and Takaki Hayashi

Subjects
medicine.medical_specialty, medicine.diagnostic_test, business.industry, Conventional angiography, General Medicine, medicine.disease, eye diseases, Magnetic resonance angiography, nervous system diseases, Central nervous system disease, Meningioma, Neurology, Dural sinus, Physiology (medical), Angiography, cardiovascular system, medicine, Surgery, cardiovascular diseases, Neurology (clinical), Radiology, Intracranial meningioma, business, circulatory and respiratory physiology, Cerebral angiography
Abstract

Three-dimensional (3D) time of flight (TOF) magnetic resonance angiography (MRA) was performed in 13 patients with intracranial meningioma. 3D-TOF unenhanced MRA depicted arterial displacement by tumour, and poorly demonstrated the sinuses, veins and tumour mass. The direct visualization of the venous abnormalities on 3D-TOF MRA was improved by the administration of contrast material. 3D-TOF enhanced MRA simultaneously depicted tumour enhancement, arterial and/or venous displacement, and dural sinus involvement by the tumour, all of which were in good agreement with findings on conventional cerebral angiography. However, MRA tended to poorly demonstrate the feeding arteries as compared to conventional angiography. Our results indicate that multiview 3D-TOF enhanced MRA non-invasively provides important information about the topographic relationship between tumour mass and the surrounding vasculature.

Published
1996

15. Haemorrhagic Nonsecreting Pituitary Adenoma Associated with Persistent Primitive Trigeminal Artery

Author

Takumi Abe, Hisato Ikeda, Koji Matsumoto, Hitoshi Izumiyama, Noriyoshi Kawamura, Hiroshi Ozawa, Motohiko Shimazu, and S. Fujita

Subjects
Adenoma, Adult, Male, Pathology, medicine.medical_specialty, Hemorrhage, Pituitary neoplasm, Arterio-Arterial Fistula, Pituitary adenoma, medicine.artery, Basilar artery, Humans, Medicine, Pituitary Neoplasms, Trigeminal Nerve, Trigeminal nerve, medicine.diagnostic_test, business.industry, medicine.disease, Magnetic Resonance Imaging, Cerebral Angiography, medicine.anatomical_structure, Basilar Artery, Trigeminal artery, Surgery, Neurology (clinical), Neurosurgery, business, Carotid Artery, Internal, Cerebral angiography
Published
2000

16. Transsylvian approach for the anterior communicating artery aneurysm

Author

Jiro Kuwazawa, Y. Nishijima, Toshio Sawa, Ken Sasaki, M. Kawamata, T. Abe, Hitoshi Izumiyama, Takanobu Iwata, Hiroyuki Jimbo, Motohiko Shimazu, Yo. Suzuki, Ya. Suzuki, Hisato Ikeda, Y. Tadokoro, Koji Matsumoto, Noriyoshi Kawamura, and T. Iida

Subjects
Anterior Communicating Artery Aneurysm, medicine.medical_specialty, business.industry, Medicine, Surgery, Neurology (clinical), General Medicine, business
Published
1997

17. Immunohistological analysis of astrocytic tumors using A2B5

Author

K. Iwamoto, Masataka Iida, Hisato Ikeda, N. Kunii, K. Mastumoto, M. Endo, Qing Lan, Ya. Suzuki, Noriyoshi Kawamura, Jiro Kuwazawa, Takanobu Iwata, Y. Nishijima, and Ziwei Du

Subjects
Pathology, medicine.medical_specialty, business.industry, medicine, Surgery, Neurology (clinical), General Medicine, business
Published
1997

18. Acute subdural hematoma associated with aneurysmal subarachnoid hemorrhage

Author

Motohiko Shimazu, Hitoshi Izumiyama, Kiyoshi Matsumoto, Noriyoshi Kawamura, Hiroyuki Jimbo, Takanobu Iwata, and Hiroshi Ozawa

Subjects
medicine.medical_specialty, Subarachnoid hemorrhage, business.industry, medicine, Surgery, Neurology (clinical), General Medicine, business, medicine.disease, Acute subdural hematoma
Published
1997

Catalog

Books, media, physical & digital resources
See catalog results