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  • 1
    In: Cerebrovascular Diseases, S. Karger AG, Vol. 30, No. 5 ( 2010), p. 519-524
    Abstract: 〈 i 〉 Objective: 〈 /i 〉 To elucidate the frequency and clinical profiles of patients with medial medullary infarction (MMI) identified by diffusion-weighted MRI (DWI). 〈 i 〉 Methods: 〈 /i 〉 We assessed the frequency, radiological findings, etiology and clinical features of MMI detected by DWI from our single-center registry of acute ischemic patients. 〈 i 〉 Results: 〈 /i 〉 Thirty patients (1.5% of 2,014 with ischemic stroke) had MMI, including isolated unilateral MMI in 26 patients. Lesions were located by DWI in the rostral medulla of 25 patients (83%). Culprit infarcts that were undetectable by DWI in 6 (38%) of 16 patients who were assessed within 24 h after onset were later confirmed as MMI. The major etiological mechanism was small artery occlusion (SAO; 19 patients) and the median initial National Institutes of Health Stroke Scale score was 4 (interquartile range: 3–4.75). The most frequent symptom was contralateral hemiparesis (27 patients). None of the patients fulfilled the classical Dejerine Triad. Twenty-two patients (73%) had a modified Rankin Scale score of ≤2 at 3 months. A patient developed transient ischemic attack within 3 months; none developed recurrent stroke. 〈 i 〉 Conclusions: 〈 /i 〉 Rostral medullary infarction with mild neurological deficits resulting from SAO is relatively frequent. Because emergency DWI within 24 h could not detect MMI in one third of the patients, this type of infarction could be misdiagnosed as capsular/pontine lacunae or other neurological disorders.
    Type of Medium: Online Resource
    ISSN: 1015-9770 , 1421-9786
    Language: English
    Publisher: S. Karger AG
    Publication Date: 2010
    detail.hit.zdb_id: 1482069-9
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  • 2
    In: Cerebrovascular Diseases, S. Karger AG, Vol. 31, No. 2 ( 2011), p. 123-129
    Abstract: 〈 i 〉 Background: 〈 /i 〉 The aim of this study was to determine whether renal dysfunction affects the outcome of stroke patients treated with recombinant tissue plasminogen activator (rt-PA). 〈 i 〉 Methods: 〈 /i 〉 A retrospective, multicenter, observational study was conducted to identify the effects of underlying risk factors on intravenous rt-PA therapy using 0.6 mg/kg alteplase in 10 stroke centers in Japan. Consecutive stroke patients with a premorbid modified Rankin Scale (mRS) score ≤3 who received rt-PA were studied. Renal dysfunction was defined as estimated glomerular filtration rate (eGFR) 〈 60 ml/min/1.73 m 〈 sup 〉 2 〈 /sup 〉 on admission. The outcome measures were any intracerebral hemorrhage (ICH) and symptomatic ICH within the initial 36 h; favorable (mRS 0–1) outcome, poor outcome (mRS 4–6) and mortality at 3 months. 〈 i 〉 Results: 〈 /i 〉 Of a total of 578 patients (372 men; 64.4%, 71.4 ± 11.7 years old), renal dysfunction was present in 186 patients (32.2%). These patients were older and more commonly had hypertension, atrial fibrillation, prior ischemic heart disease and prior use of antithrombotic agents than patients without renal dysfunction. ICH (27.4 vs. 16.6%) and symptomatic ICH (8.1 vs. 2.6%) was more common in patients with renal dysfunction than in those without. At 3 months, patients with renal dysfunction had higher median mRS scores than those without (3 vs. 2). After multivariate adjustment for established outcome predictors, renal dysfunction was related to any ICH (odds ratio 1.81, 95% confidence interval 1.16–2.84), symptomatic ICH (2.64, 1.10–6.56), poor outcome (1.55, 1.01–2.38), and mortality (2.94, 1.38–6.42). 〈 i 〉 Conclusions: 〈 /i 〉 Reduced eGFR was associated with early ICH and 3-month unfavorable outcome in stroke patients receiving intravenous rt-PA.
    Type of Medium: Online Resource
    ISSN: 1015-9770 , 1421-9786
    Language: English
    Publisher: S. Karger AG
    Publication Date: 2011
    detail.hit.zdb_id: 1482069-9
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  • 3
    In: Cerebrovascular Diseases, S. Karger AG, Vol. 33, No. 3 ( 2012), p. 272-279
    Abstract: 〈 i 〉 Background: 〈 /i 〉 Failure to detect the sphenoidal segment of the middle cerebral artery (M1) on transcranial color-coded sonography (TCCS) results from either M1 occlusion or an insufficient temporal bone window (TBW). We sought to identify a simple indicator on B mode images for M1 evaluation. 〈 i 〉 Methods: 〈 /i 〉 Consecutive acute ischemic stroke patients with an intact M1 segment underwent prospective TCCS evaluation. Visibilities of the contralateral temporal bone (CTB), midbrain (MB) and lesser sphenoid wing (LSW) on B mode images were defined as follows: ‘invisible’, ‘poor’ if the contour was less than 50% visible, ‘fair’ if more than 50% visible and ‘good’ if totally visible. M1 detectability on color Doppler images was defined as follows: ‘INVISIBLE’, ‘POOR’ if the M1 was detected as color dots, ‘FAIR’ if linearly but discontinuously detectable, and ‘GOOD’ if linearly and continuously detectable. The relationship between each structure’s visibility and M1 detectability was assessed. 〈 i 〉 Results: 〈 /i 〉 Seventy-six patients with 152 TBWs were evaluated. The CTB was ‘invisible’ in 2%, ‘poor’ in 22%, ‘fair’ in 36% and ‘good’ in 40%. Visibility of the MB was 36, 24, 26 and 14%, respectively. Visibility of the LSW was 16, 22, 29 and 32%, respectively. The M1 was ‘INVISIBLE’ in 51%, ‘POOR’ in 7%, ‘FAIR’ in 7% and ‘GOOD’ in 35%. Spearman’s rank correlation coefficient between each structure’s visibility and M1 detectability was 0.68 for the CTB, 0.66 for the MB and 0.80 for the LSW, respectively (p 〈 0.001 for all). 〈 i 〉 Conclusion: 〈 /i 〉 Visibility of the LSW on B mode appears to be a better indicator than other structures for M1 evaluation.
    Type of Medium: Online Resource
    ISSN: 1015-9770 , 1421-9786
    Language: English
    Publisher: S. Karger AG
    Publication Date: 2012
    detail.hit.zdb_id: 1482069-9
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  • 4
    In: Cerebrovascular Diseases, S. Karger AG, Vol. 33, No. 3 ( 2012), p. 240-247
    Abstract: 〈 i 〉 Background: 〈 /i 〉 The effects of lipid levels on clinical outcomes after ischemic stroke are controversial. Whether admission lipid levels and prior statin use are associated with early intracerebral hemorrhage (ICH) and long-term functional outcome after recombinant tissue plasminogen activator (rt-PA) therapy for stroke patients was investigated. 〈 i 〉 Methods: 〈 /i 〉 Ischemic stroke patients who received intravenous rt-PA from a multicenter registry were studied. Lipid levels on admission, including total cholesterol, high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol, and triglyceride levels, as well as prior statin use, were assessed. The primary outcome was favorable outcome at 3 months corresponding to a modified Rankin Scale score ≤1. The secondary outcome was any or symptomatic ICH within the initial 36 h. 〈 i 〉 Results: 〈 /i 〉 Of 489 enrolled patients (171 women, 70.8 ± 11.6 years old), 60 used statins prior to stroke, 93 developed ICH (19.0%), and 188 (38.4%) had a favorable 3-month outcome. Of the lipid levels, only the HDL-C level was an independent predictor of favorable outcome after multivariate adjustment for baseline characteristics (OR 1.95, 95% CI 1.10–3.47 per 1 mmol/l; p = 0.023) and after further adjustment for pretreatment radiological findings (OR 2.03, 95% CI 1.07–3.84; p = 0.029). For the 187 stroke patients without cardioembolism, the HDL-C level was more strongly associated with favorable outcome (OR 4.94, 95% CI 1.91–12.76 per 1 mmol/l; p = 0.001). There were no significant associations between ICH and any lipid levels. Prior statin use was not associated with outcomes. 〈 i 〉 Conclusions: 〈 /i 〉 The admission HDL-C level was associated with favorable outcome 3 months after intravenous rt-PA therapy in stroke patients without cardioembolism.
    Type of Medium: Online Resource
    ISSN: 1015-9770 , 1421-9786
    Language: English
    Publisher: S. Karger AG
    Publication Date: 2012
    detail.hit.zdb_id: 1482069-9
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  • 5
    In: Cerebrovascular Diseases, S. Karger AG, Vol. 34, No. 2 ( 2012), p. 140-146
    Abstract: 〈 b 〉 〈 i 〉 Background: 〈 /i 〉 〈 /b 〉 The initial 24 h after thrombolysis are critical for patients’ conditions, and continuous neurological assessment and blood pressure measurement are required during this time. The goal of this study was to identify the clinical factors associated with early neurological deterioration (END) within 24 h of stroke patients receiving intravenous recombinant tissue plasminogen activator (rt-PA) therapy and to clarify the effect of END on 3-month outcomes. 〈 b 〉 〈 i 〉 Methods: 〈 /i 〉 〈 /b 〉 A retrospective, multicenter, observational study was conducted in 10 stroke centers in Japan. A total of 566 consecutive stroke patients [211 women, 72 ± 12 years old, the median initial NIH Stroke Scale (NIHSS) score of 13] treated with intravenous rt-PA (0.6 mg/kg alteplase) was studied. END was defined as a 4-point or greater increase in the NIHSS score at 24 h from the NIHSS score just before thrombo lysis. 〈 b 〉 〈 i 〉 Results: 〈 /i 〉 〈 /b 〉 END was present in 56 patients (9.9%, 18 women, 72 ± 10 years old) and was independently associated with higher blood glucose [odds ratio (OR) 1.17, 95% confidence intervals (CI) 1.07–1.28 per 1 mmol/l increase, p 〈 0.001], lower initial NIHSS score (OR 0.92, 95% CI 0.87–0.97 per 1-point increase, p = 0.002), and internal carotid artery (ICA) occlusion (OR 5.36, 95% CI 2.60–11.09, p 〈 0.001) on multivariate analysis. Symptomatic intracranial hemorrhage within the initial 36 h from thrombolysis was more common in patients with END than in the other patients (per NINDS/Cochrane protocol, OR 10.75, 95% CI 4.33–26.85, p 〈 0.001, and per SITS-MOST protocol, OR 12.90, 95% CI 2.76–67.41, p = 0.002). At 3 months, no patients with END had a modified Rankin Scale (mRS) score of 0–1. END was independently associated with death and dependency (mRS 3–6, OR 20.44, 95% CI 6.96–76.93, p 〈 0.001), as well as death (OR 19.43, 95% CI 7.75–51.44, p 〈 0.001), at 3 months. 〈 b 〉 〈 i 〉 Conclusions: 〈 /i 〉 〈 /b 〉 Hyperglycemia, 〈 b 〉 〈 /b 〉 lower baseline NIHSS score, and ICA occlusion were independently associated with END after rt-PA therapy. END was independently associated with poor 3-month stroke outcome after rt-PA therapy.
    Type of Medium: Online Resource
    ISSN: 1015-9770 , 1421-9786
    Language: English
    Publisher: S. Karger AG
    Publication Date: 2012
    detail.hit.zdb_id: 1482069-9
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  • 6
    In: Chemotherapy, S. Karger AG, Vol. 41, No. 6 ( 1995), p. 462-469
    Type of Medium: Online Resource
    ISSN: 0009-3157 , 1421-9794
    Language: English
    Publisher: S. Karger AG
    Publication Date: 1995
    detail.hit.zdb_id: 1482111-4
    SSG: 15,3
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  • 7
    In: Digestive Diseases, S. Karger AG, Vol. 41, No. 2 ( 2023), p. 316-324
    Abstract: 〈 b 〉 〈 i 〉 Background: 〈 /i 〉 〈 /b 〉 Neuroendocrine neoplasms of the ampulla of Vater (ampullary NEN) have features of both gastrointestinal and pancreato-biliary (PB) NEN. However, the limited number of studies examining ampullary NEN makes it difficult to clarify their unique characteristics. This study aimed to elucidate the clinical characteristics of ampullary NEN. 〈 b 〉 〈 i 〉 Methods: 〈 /i 〉 〈 /b 〉 We enrolled 162 patients with PB-NEN diagnosed at Kyushu University Hospital between 2011 and 2020. Clinical features, pathological diagnoses, treatments, and prognoses were retrospectively analyzed. We also compared ampullary NEN with pancreatic NEN (PanNEN). 〈 b 〉 〈 i 〉 Results: 〈 /i 〉 〈 /b 〉 We analyzed 10 ampullary NEN cases and 149 PanNEN cases. The ampullary NEN cases consisted of 4 cases of neuroendocrine tumor Grade 1 (NET G1), 1 NET G2 (Grade 2), and 5 neuroendocrine carcinomas (NECs). The incidences of NEC and cholangitis were significantly higher in ampullary NEN than in PanNEN. All ampullary NETs had a submucosal tumor-like appearance, as identified by endoscopic ultrasound-guided fine needle aspiration. We treated small NET G1 ( & #x3c;10 mm) with endoscopic papillectomy and large NET G1 with pancreaticoduodenectomy. There were no cases of recurrence after resection. All ampullary NECs presented with the characteristic endoscopic finding of a “crater sign” similar to deep-mining ulcers seen in gastric malignant lymphoma. Four cases underwent surgical resection, and 1 case was unresectable. Two patients who underwent multidisciplinary treatment were maintained without recurrence for over 2 years. 〈 b 〉 〈 i 〉 Conclusions: 〈 /i 〉 〈 /b 〉 Endoscopic findings showed identifiable distinctions between ampullary NETs and NECs.
    Type of Medium: Online Resource
    ISSN: 0257-2753 , 1421-9875
    Language: English
    Publisher: S. Karger AG
    Publication Date: 2023
    detail.hit.zdb_id: 1482221-0
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  • 8
    In: Case Reports in Neurology, S. Karger AG, Vol. 11, No. 2 ( 2019-7-16), p. 222-229
    Abstract: Computerized tomography (CT) or magnetic resonance imaging (MRI) is indispensable for diagnosing acute ischemic stroke (AIS) patients who are candidates for recombinant tissue plasminogen activator (rt-PA) therapies, but further investigation concerning appropriate selection of therapy following advanced imaging including perfusion imaging has not yet been done. The 2018 AHA guidelines have recommended not to perform excessive time-consuming imaging before rt-PA. Here we describe two cases in which reperfusion therapy was decided based on advanced imaging. The first case was a 70-year-old woman with complaints of total aphasia and right unilateral spatial neglect. Her MRI revealed no apparent high signal area in diffusion-weighted image (DWI), and her magnetic resonance angiography (MRA) showed no large vessel occlusion. Subsequent perfusion-weighted image (PWI) analysis showed a unilateral perfusion deficit in the left middle cerebral artery (MCA) region. The other case was an 88-year-old man with complaints of minor unilateral spatial neglect, right conjugate deviation of the eyes, and dysarthria. His MRI also revealed no apparent high signal area in DWI, and MRA showed slight stenosis in the right middle MCA. Subsequent PWI analysis showed a unilateral perfusion deficit in the right MCA region. In both cases, intravenous rt-PA therapy was administered after the diagnosis of AIS and the patients responded well to the reperfusion therapy. When DWI is performed too early, detecting the ischemic core and differentiating between a diagnosis of stroke and stroke mimics is sometimes difficult. Evaluation of perfusion abnormalities in acute cases can be performed quickly, as shown in these cases. Although rt-PA can be given just by non-contrast CT with no hemorrhage, advanced imaging may be an option to identify difficult-to-diagnose patients who require reperfusion therapy.
    Type of Medium: Online Resource
    ISSN: 1662-680X
    Language: English
    Publisher: S. Karger AG
    Publication Date: 2019
    detail.hit.zdb_id: 2505302-4
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  • 9
    In: Cerebrovascular Diseases, S. Karger AG, Vol. 51, No. 3 ( 2022), p. 323-330
    Abstract: 〈 b 〉 〈 i 〉 Introduction: 〈 /i 〉 〈 /b 〉 Stroke remains a major cause of death and disability in Japan and worldwide. Detecting individuals at high risk for stroke to apply preventive approaches is recommended. This study aimed to develop a stroke risk prediction model among urban Japanese using cardiovascular risk factors. 〈 b 〉 〈 i 〉 Methods: 〈 /i 〉 〈 /b 〉 We followed 6,641 participants aged 30–79 years with neither a history of stroke nor coronary heart disease. The Cox proportional hazard model estimated the risk of stroke incidence adjusted for potential confounders at the baseline survey. The model’s performance was assessed using the receiver operating characteristic curve and the Hosmer-Lemeshow statistics. The internal validity of the risk model was tested using derivation and validation samples. Regression coefficients were used for score calculation. 〈 b 〉 〈 i 〉 Results: 〈 /i 〉 〈 /b 〉 During a median follow-up duration of 17.1 years, 372 participants developed stroke. A risk model including older age, current smoking, increased blood pressure, impaired fasting blood glucose and diabetes, chronic kidney disease, and atrial fibrillation predicted stroke incidence with an area under the curve = 0.76 and 〈 i 〉 p 〈 /i 〉 value of the goodness of fit = 0.21. This risk model was shown to be internally valid ( 〈 i 〉 p 〈 /i 〉 value of the goodness of fit in the validation sample = 0.64). On a risk score from 0 to 26, the incidence of stroke for the categories 0–5, 6–7, 8–9, 10–11, 12–13, 14–15, and 16–26 was 1.1%, 2.1%, 5.4%, 8.2%, 9.0%, 13.5%, and 18.6%, respectively. 〈 b 〉 〈 i 〉 Conclusion: 〈 /i 〉 〈 /b 〉 We developed a new stroke risk model for the urban general population in Japan. Further research to determine the clinical practicality of this model is required.
    Type of Medium: Online Resource
    ISSN: 1015-9770 , 1421-9786
    Language: English
    Publisher: S. Karger AG
    Publication Date: 2022
    detail.hit.zdb_id: 1482069-9
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  • 10
    In: Oncology, S. Karger AG, Vol. 99, No. 12 ( 2021), p. 756-765
    Abstract: 〈 b 〉 〈 i 〉 Background & amp; Aims: 〈 /i 〉 〈 /b 〉 Intermediate hepatocellular carcinoma (HCC) treatment has become complicated due to the development of various molecular-targeted agents (MTAs). We aimed to determine whether the administration of MTAs in patients with intermediate-stage HCC contributed to the prevention of progression to an advanced stage. 〈 b 〉 〈 i 〉 Methods: 〈 /i 〉 〈 /b 〉 We enrolled and retrospectively examined 289 patients with Child-Pugh class A who had been diagnosed with intermediate-stage HCC and underwent initial trans-arterial chemoembolization (TACE). Patients were classified into 2 groups: a group in which MTAs were administered to patients whose condition was refractory to TACE ( 〈 i 〉 n 〈 /i 〉 = 65) and a group in which MTAs were not administered ( 〈 i 〉 n 〈 /i 〉 = 65) at intermediate-stage HCC after propensity score matching (PSM). Time to stage progression (TTSP) and overall survival (OS) were calculated using the Kaplan-Meier method and analyzed using a log-rank test after PSM. 〈 b 〉 〈 i 〉 Results: 〈 /i 〉 〈 /b 〉 TTSP and OS of the group with MTA administration were significantly longer than those of the group without MTA administration (TTSP: 36.4 vs. 17.9 months, 〈 i 〉 p 〈 /i 〉 & #x3c; 0.001; median survival time [MST]: 44.6 vs. 26.6 months, 〈 i 〉 p 〈 /i 〉 = 0.001). Within the up-to-seven criteria and administration of MTAs at the intermediate-stage HCC were identified as independent factors for TTSP and OS in the multivariate analysis. TTSP and OS in the era of the multi-MTA group were significantly longer than those in the era of the mono-MTA group (TTSP: 44.8 vs. 27.4 months, 〈 i 〉 p 〈 /i 〉 = 0.01; MST: 53.4 vs. 33.3 months, 〈 i 〉 p 〈 /i 〉 = 0.01). 〈 b 〉 〈 i 〉 Conclusion: 〈 /i 〉 〈 /b 〉 The administration of MTAs in patients with intermediate-stage HCC contributes to the prevention of stage progression and prolongs OS.
    Type of Medium: Online Resource
    ISSN: 0030-2414 , 1423-0232
    RVK:
    Language: English
    Publisher: S. Karger AG
    Publication Date: 2021
    detail.hit.zdb_id: 1483096-6
    detail.hit.zdb_id: 250101-6
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