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排序方式: 共有719条查询结果,搜索用时 15 毫秒
111.
Bronchioloalveolar carcinoma of mixed mucinous and nonmucinous type fulfilling the 1999 WHO criteria is rare. Here, we report a case of this type of tumor determined entirely by histological examinations. A 57-year-old man was incidentally found to have a demarcated 3cm mass in his lower lobe of the right lung. The tumor was composed of tall columnar cells containing cytoplasmic mucins, cuboidal cells without mucins, and intermediate cell types with lepidic growth patterns. Tumor cells were distributed within a region of 2cm in diameter, and no stromal, vascular, or pleural invasion was observed. Immunohistochemically, both the mucinous and nonmucinous components were positive for cytokeratin 7, TTF-1, and E-cadherin, and negative for cytokeratin 20, consistent with the results for nonmucinous bronchioloalveolar carcinoma. No mutations were detected in exons 5-8 of the p53 gene. The present tumor was composed mainly of morphologically mucinous bronchioloalveolar carcinoma, but presented different immunohistochemical profiles of ordinary mucinous bronchioloalveolar carcinoma. This case suggests that the mucinous component in bronchioloalveolar carcinoma of mixed mucinous and nonmucinous type has characters dissimilar to conventional mucinous bronchioloalveolar carcinoma, and is probably derived from the nonmucinous component. 相似文献
112.
Sekine H Iijima K Koike T Abe Y Imatani A Kato K Ohara S Shimosegawa T 《Gastrointestinal endoscopy》2006,64(5):678-685
BACKGROUND: Gastric-acid secretion is reduced in Helicobacter pylori-positive fundic atrophic gastritis, but it is restored by the eradication. However, changes in the distribution of acid-secreting mucosa after the eradication remain unknown. Congo red chromoendoscopy is capable of visualizing the acid-secreting fundic mucosa. OBJECTIVE: To evaluate the effect of H pylori eradication on the distribution of acid-secreting mucosa in the fundus by using Congo red chromoendoscopy. DESIGN: An assessment of the distribution of acid-secreting mucosa by the visualized images of Congo red chromoendoscopy and a histologic evaluation of biopsy specimens were performed before and 1 and 7 months after the eradication. The areas of the acid-secreting mucosa in the lesser and greater curvatures of the fundus were evaluated semiquantitatively. PATIENTS: Thirty-seven patients positive for H pylori and with fundic atrophic gastritis. RESULTS: The area of the acid-secreting mucosa increased in 27 cases (73%) by 1 month after eradication, and in 32 cases (86%) by 7 months. This expansion of the acid-secreting mucosa coincided with the improvement of inflammatory changes rather than with that of the mucosal atrophy and was more prominent on the greater curvature than on the lesser curvature. CONCLUSIONS: The acid-secreting mucosa in the fundus expanded in most cases with fundic atrophic gastritis after H pylori eradication, which could be responsible for the increase in acid secretion after the treatment. Regional differences in the recovery of local acid secretion may be associated with site-specific susceptibility to the development of gastric cancer after successful eradication. 相似文献
113.
Yuri T Shimano N Ohashi Y Miki K Tsukamoto R Tsubura A 《Medical molecular morphology》2006,39(1):49-53
An autopsy case of a 19-year-old male Japanese student with a primary mixed choriocarcinoma and mature teratoma in the thymic
region is reported. The patient died 7 days after he first noticed fever and dyspnea. On autopsy, an anterior mediastinal
mass was found to be in contact with the thymic gland. The mass weighed 270 g and measured 12.5 cm × 10 cm × 5 cm. The left
thoracic cavity contained 2200 ml bloody pleural effusion and 200 g coagula due to hemorrhage from the tumor. Metastasized
choriocarcinoma was seen in both lungs and the liver. High serum levels of human chorionic gonadotropin (HCG, 1 634 000 mIU/ml)
and a decreased weight of the testes (2.0 g each) with Leydig cell hyperplasia/hypertrophy and the seminiferous tubules with
hyaline ghost tubules or Sertoli cell only tubules were seen; other male reproductive organs were histologically normal. Although
the serum testosterone level was within the normal range (5.75 ng/ml), luteinizing hormone (LH, 0.1 mIU/ml) and follicle-stimulating
hormone (FSH, 0.3 mIU/ml) levels were decreased. High serum levels of HCG and characteristic testicular changes are drscribed. 相似文献
114.
115.
Reduced serum levels of brain-derived neurotrophic factor in adult male patients with autism 总被引:3,自引:0,他引:3
Hashimoto K Iwata Y Nakamura K Tsujii M Tsuchiya KJ Sekine Y Suzuki K Minabe Y Takei N Iyo M Mori N 《Progress in neuro-psychopharmacology & biological psychiatry》2006,30(8):1529-1531
BACKGROUND: The precise mechanisms underlying the pathophysiology of autism are currently unknown. Given the key role of brain-derived neurotrophic factor (BDNF) in brain development, we hypothesized that BDNF may play a role in the pathophysiology of autism. In this study, we studied whether serum levels of BDNF are altered in patients with autism. METHODS: We measured serum levels of BDNF in 18 adult male patients with autism and 18 age-matched healthy male control subjects. RESULTS: The serum levels of BDNF in patients with autism (25.6+/-2.15 ng/ml (mean+/-S.D.)) were significantly (z = -4.42, p < 0.001) lower than those of normal controls (61.6+/-10.9 ng/ml (mean+/-S.D.)). Nevertheless, we found no correlations between BDNF levels and clinical variables in autistic patients. CONCLUSIONS: This study suggests that reduced BDNF levels may play a role in the pathophysiology of autism. 相似文献
116.
Yoshitsugu K Yamada K Toyota T Aoki-Suzuki M Minabe Y Nakamura K Sekine Y Suzuki K Takei N Itokawa M Mori N Yoshikawa T 《Psychiatry research》2006,145(2-3):249-258
The present study explored minor physical anomaly items relevant to schizophrenia in order to establish a scale that can distinguish schizophrenia from controls using newly identified items along with items from the refined Waldrop scale. Seven items were significantly more frequent among schizophrenia patients (N=218) than controls (N=226). Among these seven items, two novel features, strabismus and 'cuspidal ear' showed markedly different prevalence rates between schizophrenia and control groups. A six-item scale, including the newly identified strabismus and cuspidal ear, was selected for most accurately discriminating patients with schizophrenia from controls. This scale correctly classified 59.6% of patients and 78.9% of control subjects. This new scale is procedurally more exacting and quantitative, and more relevant to schizophrenia than the original Waldrop scale. The validity of this scale should be sound since it was tested on a larger number of cohorts than used in previous research. Our scale can be used as a biomarker for predicting risk for future development of schizophrenia. The scale may also facilitate the identification of schizophrenia susceptibility genetic/environmental factors by stratifying etiologically heterogeneous patients according to physical abnormalities. 相似文献
117.
Yoshikawa H Sato K Edahiro S Furukawa Y Maruta T Iwasa K Watanabe H Takaoka S Suzuki Y Takamori M Yamada M 《Journal of neuroimmunology》2006,175(1-2):169-175
We examined the serum levels of cytokines, interferon (IFN)-alpha, IFN-gamma, interleukin (IL)-4, IL-12 p40, and IL-12 p70; those that affect the T helper 1 and 2 balance in patients with myasthenia gravis (MG). Among the cytokines tested, only IL-12 p40, together with the serum titer of anti-IL-12 p40 antibody, was significantly elevated in MG with thymoma. Their elevation was independent of the histopathology of thymoma. Thymectomy decreased the levels of IL-12 p40 accompanied by the anti-acetylcholine receptor antibody, but not anti-IL-12 p40 antibodies. These data strongly suggest the association of IL-12 p40 and its autoantibody with the immunopathology of MG with thymoma. 相似文献
118.
119.
The aim of this study was to investigate the histological changes following the treatment with abatacept compared with methotrexate (MTX) by an immunohistological examination of synovial tissue for eleven different molecules to detect the expression patterns of cytokines. We histologically assessed the synovial tissues from 10 methotrexate (MTX)-treated RA patients as controls and 5 abatacept plus MTX-treated RA patients. The synovium samples from both group were assessed by hematoxylin and eosin (HE) staining and analyzed for their expression of tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), matrix metalloproteinase-3 (MMP-3), CD20, CD68, vascular endothelial growth factor (VEGF), CD4, CD8, CD28, CD80, and CD86 by an immunohistological examination. HE staining showed that there was a decrease in cell proliferation in the synovium of the RA patients who received abatacept compared with the controls. TNF-α, IL-6, and VEGF were not significantly different in either of the groups. On the other hand, MMP-3, CD68, CD4, CD8, CD20, CD80, and CD86 were significantly decreased in the abatacept group compared with the control (P < 0.05). Based on the histological analysis of the synovium, it appears that the efficacy of the treatment with abatacept may involve the inhibition of cell proliferation, with decreases in the expression of MMP-3, CD68, CD4, CD8, CD20, CD80, and CD86 in the synovium. These findings indicate inhibition of not only T cells but also B cells and macrophages, which likely plays a role in the efficacy of abatacept in RA patients. 相似文献
120.
Kojima K Brown EC Rothermel R Carlson A Matsuzaki N Shah A Atkinson M Mittal S Fuerst D Sood S Asano E 《Clinical neurophysiology》2012,123(10):1917-1924