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排序方式: 共有1009条查询结果,搜索用时 31 毫秒
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Coronary artery bypass grafts: visualization with MR imaging 总被引:1,自引:0,他引:1
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Hysterosalpingography was performed in 31 patients by means of a low-dose scanning-beam digital radiographic system. The technique permits adequate evaluation of gynecologic abnormalities while allowing significant reduction in radiation: 2.4-mR (6.1 X 10(-7) C/kg) exposure to the skin and 0.7-mrad (7 X 10(-6) Gy) mean dose to the ovaries per image obtained. Sixteen patients demonstrated readily recognizable and documented abnormalities, corroborated by laparoscopy, laparotomy, or other supportive evidence. 相似文献
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Huang Guo-Shu MD Chang Wei-Chou MD Lee Herng-Sheng MD † Taylor John A. M. DC DACBR ‡ Cheng Tiang-Yeu MD § Chen Cheng-Yu MD 《Dermatologic surgery》2005,31(6):717-719
BACKGROUND: Merkel cell carcinoma is a rare malignant neuroendocrine neoplasm characteristically arising from the dermis of sunlight-exposed skin. It rarely arises outside the skin. OBJECTIVE: We present a patient with primary Merkel cell carcinoma arising from subcutaneous fat, with no involvement of the overlying skin. We describe the clinical manifestations and magnetic resonance imaging (MRI) findings. METHODS: We report a 63-year-old woman with a primary lesion of Merkel cell carcinoma that arose from the subcutaneous fat layer of the left arm. The lesion presented as a subcutaneous nodule with intact overlying skin. MRI showed that the nodular lesion was located entirely in the subcutaneous fat layer, with no involvement of the dermis. Peritumoral infiltration around the lesion and enlarged lymph nodes deep to the lesion were noted. The patient received wide excision of the lesion with dissection of the regional lymph nodes and adjuvant radiotherapy and chemotherapy. RESULTS: Histopathologic examination confirmed the diagnosis of Merkel cell carcinoma with local lymphatic metastasis, and the lesion was completely located in the subcutaneous fat, with no involvement of the dermis. These findings were well correlated with MRI findings. CONCLUSION: Primary Merkel cell carcinoma may arise from the subcutaneous fat and present as an entirely subcutaneous lesion with intact skin. MRI is helpful to evaluate the local extension of the lesion and regional lymphatic metastasis. 相似文献
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表小檗碱对α受体的作用 总被引:2,自引:0,他引:2
表小檗碱(epiberberine,EB)是从湖北产黄连(Coptis chinensis Franch)中提取的一种生物碱,属苯喹嗪类原小檗碱,对其药理作用的研究资料甚少,未见其对α肾上腺素体作用的报道。资料表明,许多原小檗碱类化合物有α受体阻滞作用,为从该类化合物中选择 相似文献
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The purpose of this pilot study was to observe both relaxed and deep breathing patterns in a convenience sample to determine the incidence of normal versus faulty patterns of respiration. These observations were then combined with respondent answers to a survey on pain history to determine if there is any correlation between faulty breathing and musculo-skeletal pain patterns. If such a correlation can be made, then we propose that clinicians working with chronic pain patients may have improved outcomes if they address and correct faulty breathing patterns. Based on this study, it is suggested to include the evaluation and treatment of faulty respiration in the rehabilitation of chronic musculo-skeletal conditions, most notably cervical pain. 相似文献
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Human melanoma-mediated inhibition of autologous CD4+ helper tumor-infiltrating lymphocyte growth in vitro. 总被引:1,自引:0,他引:1
Tumor-infiltrating lymphocytes (TIL) were isolated from a human melanoma metastatic to the abdomen. The TIL were 99% CD3+ and 99% CD4+ and CD8-. They were dependent on interleukin-2 (IL-2) for growth, as measured in a thymidine uptake assay, and were not cytotoxic to autologous or allogeneic melanoma or K562. When co-cultured with irradiated autologous tumor cells, or tumor cell supernatants, the TIL not only did not respond, but the IL-2-dependent growth was inhibited significantly. Inhibition occurred during the first 24 hours of co-culture and persisted as long as the tumor was present. After being washed free of inhibitory tumor cells, the TIL again were able to grow in the presence of IL-2, indicating that the inhibition was not caused by irreversible toxicity mediated by the tumor. Addition of excess IL-2 did not reverse the inhibitory effect, but addition of indomethacin, an inhibitor of cyclooxygenase and prostaglandin synthesis, partially blocked the inhibition. These data show melanoma-mediated inhibition of induction and expansion of human T-cells in vitro, which may reflect one of the mechanisms of inhibition of cellular responses in vivo. These results stress the need to examine the techniques for optimal in vitro expansion of tumor-specific TIL or cytotoxic T-cells for adoptive immunotherapy. 相似文献
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36例踝关节骨折合并下胫腓联合分离的治疗体会 总被引:1,自引:1,他引:0
0 引言 踝关节骨折是临床上较常见的关节内骨折,包含了腓骨骨折,内踝骨折,后踝骨折和下胫腓联合的损伤. 处理不当可导致踝穴的变形,下胫腓联合分离后期出现创伤性关节炎. 相似文献
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