著者

Shingo Tanaka Noboru Ohba Kiyoshi Abe Yuka Tamoto Kenji Yasui Chihiro Kobayashi Nagomi Saito Koji Miyanishi Satoshi Takahashi Junji Kato

出版者

Japanese Society of Laboratory Medicine

雑誌

Laboratory Medicine International (ISSN:24368660)

巻号頁・発行日

vol.2, no.3, pp.42-49, 2023 (Released:2023-12-29)

参考文献数

24

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Aims: Attenuation imaging (ATI) is a new ultrasonography method of evaluating hepatic steatosis. Attenuation coefficients (ACs) in the region of interest are measured using two-dimensional ultrasonography. ATI also displays the coefficient of determination (R2) as an index of AC reliability. This study aimed to elucidate R2 values in patients who underwent ATI in clinical practice and to determine factors that influence R2 values. Methods: This study included 749 patients who underwent ATI to evaluate hepatic steatosis at a single center. All abdominal ultrasound examinations were performed by one of the five experienced ultrasonographers. The AC and R2 values were measured five times, and the median values were calculated. Multivariate analysis was conducted to identify factors affecting R2 values. Results: One hundred and nine (15%) patients showed R2 values of < 0.80, of which 108 had non-fatty liver. Further, the R2 value was strongly correlated with AC (correlation coefficient = 0.842). Uncomplicated diabetes (Odds ratio [OR], 2.68) and AC (< 0.60 dB/cm/MHz; OR, 72.76) were identified as independent factors associated with low R2 values (< 0.80). Conclusion: ATI in patients with non-fatty liver showed low R2 values. Worldwide standardization of the ATI measurement method is urgently needed for consistent results.

著者

Junki SOGANO Satoshi TAKAHASHI Nobuyuki TANAKA Hajime KUBO Hajime OKITA Mototsugu OYA Masahiro TODA

出版者

The Japan Neurosurgical Society

雑誌

NMC Case Report Journal (ISSN:21884226)

巻号頁・発行日

vol.10, pp.235-239, 2023-12-31 (Released:2023-09-29)

参考文献数

13

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We performed surgical treatment for cerebellar metastasis of relatively rare small-cell neuroendocrine carcinoma (SCNC) of the urinary bladder. On preoperative imaging, the lesion was solitary, and the edema around the tumor was unremarkable; thus, other differential diagnoses besides a metastatic brain tumor were also considered preoperatively. Intraoperatively, the tumor was soft, and the circumference brain and boundary were indistinct and easily hemorrhagic. The tumor was grossly totally removed, and postoperative radiotherapy was added. The clinical symptoms of the patient were relieved, and he was discharged on foot. Thus far, relatively few reports have described surgical treatment of brain metastases of SCNC of the urinary bladder. We herein report a case of metastatic brain tumor due to SCNC of the urinary bladder that required surgical treatment, along with a review of the previous literature regarding its clinical features and the characteristics of intracranial lesions related to surgery, such as imaging and intraoperative findings.

著者

Kento TAKAHARA Satoshi TAKAHASHI Utaro HINO Takashi HORIGUCHI Masahiro TODA

出版者

The Japan Neurosurgical Society

雑誌

NMC Case Report Journal (ISSN:21884226)

巻号頁・発行日

vol.9, pp.377-382, 2022-12-31 (Released:2022-11-09)

参考文献数

19

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Carotid endarterectomy (CEA) and carotid artery stenting (CAS) for internal carotid artery (ICA) stenosis have specific risks. Therefore, the accurate evaluation and management of each risk factor are important, especially for patients who are at high risk for both CEA and CAS.We report the case of a 77-year-old man with right ICA stenosis that progressed despite optimal medical treatment. In addition, he had several risk factors for both CEA and CAS, including previous cervical radiation therapy, contralateral ICA occlusion, chronic kidney insufficiency, and severe aortic valve stenosis. CEA was performed with priority given to aortic valve stenosis without complications, and the patient was discharged 10 days postoperatively, without neurological sequelae. However, a pericarotid cervical abscess was detected by carotid echo, computed tomography (CT), and magnetic resonance imaging (MRI) 1 month after CEA that required surgical drainage. The infection was thought to be odontogenic because the pathogen was identified as normal oral bacterial flora, and a wound infection was not apparent. Teeth extraction and abscess drainage, in combination with antibiotic therapy, successfully cured the infection without additional complications.Odontogenic cervical abscesses after CEA can occur, especially if the patient is at risk of infection. Therefore, both preoperative and postoperative dental evaluation and management are recommended. As in this case, a cervical abscess can occur without wound infection, and the abscess diagnosis is sometimes difficult from wound inspection alone. Cervical echocardiogram and CT were useful for detecting fluid collection, whereas MRI was useful for qualitatively evaluating the lesion.

著者

Azuna TOMIOKA Satoshi TAKAHASHI Ryotaro IMAI Hirotsugu NOGAWA Hajime OKITA Akihisa UENO Masahiro TODA

出版者

The Japan Neurosurgical Society

雑誌

NMC Case Report Journal (ISSN:21884226)

巻号頁・発行日

vol.9, pp.111-116, 2022-12-31 (Released:2022-05-18)

参考文献数

32

被引用文献数

1

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Chronic encapsulated intracerebral hematoma (CEIH) is a rare cerebrovascular disease featuring progressively expanding intracranial hematoma. We treated a man in his 70s with bilateral cerebellar CEIH. He had presented at another hospital with dizziness, and imaging showed two independent hemorrhagic space-occupying lesions in the bilateral cerebellar hemispheres. The symptoms progressed relatively rapidly, and there were signs of impending cerebellar herniation; he was transferred to our institution, and emergency surgery was performed. The operative findings included a hematoma with partial capsulation. We diagnosed CEIH from preoperative magnetic resonance imaging and computed tomography findings, clinical course, and pathological findings. The postoperative course was satisfactory. We present this case of bilateral cerebellar CEIH, as an extensive search of the literature suggests that this has not been reported before. Although CEIH is a condition that is usually hard to diagnose preoperatively, good outcomes can be achieved with appropriate surgical treatment. It is therefore important to keep this clinical entity in mind and not miss the right timing to operate.

著者

斉藤 浩一 高橋 郷史 サイトウ コウイチ タカハシ サトシ Koichi Saito Satoshi Takahashi

雑誌

東京情報大学研究論集

巻号頁・発行日

vol.9, no.1, pp.1-9, 2005-09-20

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本研究は、最近言われる「理科嫌い」について、教育心理学的に原因を追求するものである。さらに、教育方法等に提言を行う。本稿では、実際の高校生に対してアンケート調査を行う。ここではまず「理科志向」という概念を設定し、それに満たない者を「理科離れ」の状態にあると定義する。さらに、これまでの理科教育やこれから志向する理科系への意識がどのように、因果関係を持っているか実態を捉え、モデルを構築する。以上によって、どのような教育施策が有効か、提言を行うものである。