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1.
汪翔  杨少岩  张蒙  何安邦  吴松 《骨科》2015,6(4):215-219
骨巨细胞瘤( giant cell tumor of bone,GCTB)通常被认为是一种交界性骨肿瘤,具体发病机制不详且易复发,目前除了手术暂无其他有效的治疗方案。但随着快速减法杂交( rapid subtractive hybridization,RaSH)和实时定量聚合酶链式反应( quantitative real-time polymerase chain reaction, qRT-PCR)等技术在GCTB研究领域的运用,基因突变、基因表达谱、基因转染及信号通路等基因组学事件在GCTB中得到了进一步的探索。这些研究正逐渐揭示了GCTB的发病机制,同时也改进了这种骨肿瘤的早期诊断及治疗方案。本文旨在总结GCTB基因组学研究现状,以期能发现早期特异性诊断指标,并在此基础上改进治疗方案及减少该病的术后复发率。  相似文献   
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IntroductionEccrine spiradenomas are rare adnexal tumours of the skin that originate in the sweat glands. There are only three cases, including ours, diagnosed as malignant transformation in the breast.Presentation of caseWe present a case of an asymptomatic 48 year old woman in whom the lesion was detected on the basis of breast cancer prevention programme. The metastatic study detection and the sentinel lymph node biopsy were negative so wide excision of the mass was performed with no further treatment. After 32 months of follow-up, there is no evidence of recurrent or metastatic disease in our patient.DiscussionThe lesions usually show a typical history of a long-standing unchanged cutaneous solitary nodule that becomes enlarged. The imaging findings of breast eccrine spiradenomas have not been clearly demonstrated. Diagnosis is based in histopathological findings of malignant focus.A large list of uncommon dermatological skin malignancies and breast benign lesions can mimic malignant eccrine spiradenomas (MES); therefore, determination of inmunophenotype allows narrowing differential diagnosis. Distant metastases portend an ominous prognosis. The mainstay of treatment is surgical removal with wide excision margins. Radiation and hyperthermic chemotherapy can also be administered to prevent focal recurrence. Due to the high risk of developing metastases, close follow up of these patients for early detection of recurrence should be carried out.ConclusionEccrine spiradenomas are rare adnexal tumours of the skin. Intraparenquimatous breast location is especially infrequent. Diagnosis is based on histopathological examination. MES metastasizes (40%), so a close follow up is recommended.  相似文献   
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IntroductionSolid-cystic pseudopapillary tumor of the pancreas is rare and most commonly seen in young women. We present a young women with solid-cystic pseudopapillary tumor of the pancreas and discuss the literature.Presentation of caseThirty nine years old female patient with a mass about 12 cm in the pancreas with splenic invasion seen in our clinic. After having CT and PET-CT view, patient underwent surgery. Distal pancreatectomy with mass excision and splenectomy was performed. Microscopic examination result was solid cystic pseudopapillary tumor with spleen invasion.DiscussionSolid-cystic pseudopapillary tumor of the pancreas has cystic solid pseudopapillary structures. Prognosis of tumor is better than other pancreatic tumor. Complete resection of tumor with splenic inclusion is surgical treatment.ConclusionIn case of large slow growing pancreatic tumor with splenic metastasis, solid-cystic pseudopapillary tumor of the pancreas should be considered in the diagnosis. Complete surgical resection is associated with long-term survival even in the presence of metastatic disease. Close follow-up is necessary after surgery.  相似文献   
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IntroductionInflammatory myofibroblastic tumors (IMFTs) are neoplastic lesions that are either benign or have low-grade malignancy potential. Although the etiopathogenesis is not entirely clear, many factors play a role in their development, including trauma, autoimmune disorders, and infectious and inflammatory processes. However, IMFTs caused by Actinomyces spp. infection are rare, with a limited number of cases reported in the literature.Presentation of caseA 30-year-old woman was admitted to our clinic with abdominal pain and a palpable abdominal mass. Contrast-enhanced computed tomography revealed a tumoral lesion (11 × 10 × 7 cm) in the right colon. A right hemicolectomy and ileocolic anastomosis were performed, during which almost complete obstruction of the lumen by the 7.5 × 7.0 × 5.0 cm tumor was observed. Histopathology and immunohistochemical findings revealed that the tumor was consistent with an IMFT that developed from an Actinomyces infection. The patient was then placed on amoxicillin and doxycycline therapy.ConclusionThis case demonstrates that the development of IMFT secondary to actinomycosis is difficult to predict in the preoperative period. Once an exact diagnosis is confirmed by histopathologic examination, affected patients should receive prolonged antibiotherapy.  相似文献   
5.
Immunohistochemical and ex vivo anatomical studies have provided many glimpses of the variety, distribution, and signaling components of vertebrate retinal neurons. The beauty of numerous images published to date, and the qualitative and quantitative information they provide, indicate that these approaches are fundamentally useful. However, obtaining these images entailed tissue handling and exposure to chemical solutions that differ from normal extracellular fluid in composition, temperature, and osmolarity. Because the differences are large enough to alter intercellular and intracellular signaling in neurons, and because retinae are susceptible to crush, shear, and fray, it is natural to wonder if immunohistochemical and anatomical methods disturb or damage the cells they are designed to examine. Tissue fixation is typically incorporated to guard against this damage and is therefore critically important to the quality and significance of the harvested data. Here, we describe mechanisms of fixation; advantages and disadvantages of using formaldehyde and glutaraldehyde as fixatives during immunohistochemistry; and modifications of widely used protocols that have recently been found to improve cell shape preservation and immunostaining patterns, especially in proximal retinal neurons.  相似文献   
6.
目的探究参附注射液联合表柔比星和紫杉醇治疗三阴性乳腺癌的临床疗效。方法选择2011年5月—2014年5月在海南省人民医院接受治疗的三阴性乳腺癌患者150例,随机分为对照组和治疗组,每组各75例。对照组在每个化疗周期的第1天静脉滴注注射用盐酸表柔比星60 mg/m2,1次/d,同时静脉滴注紫杉醇注射液120 mg/m2,1次/d,滴注时间大于3 h。治疗组在每个化疗周期的1~10 d静脉滴注参附注射液50 m L/次,注射用盐酸表柔比星和紫杉醇注射液的用法用量同对照组。21 d为一个化疗疗程,两组均连续治疗2个疗程。治疗后,评价两组的临床疗效,同时比较两组患者治疗前后肿瘤直径、癌细胞的叉头框蛋白A1(fork box protein A1,FOXA1)、乳腺癌易感基因(breast cancer susceptibility gene 1,BRCA1)蛋白水平的变化。结果治疗后,对照组和治疗组的总有效率分别为82.67%、64.00%,两组比较差异有统计学意义(P0.05)。治疗后,两组患者的肿瘤直径、FOXA1、BRCA1蛋白均较治疗前显著降低,同组治疗前后差异有统计学意义(P0.05);且治疗组的降低程度优于对照组,两组比较差异具有统计学意义(P0.05)。对照组和治疗组的不良反应发生率分别为18.67%、13.33%,两组比较差异有统计学意义(P0.05)。结论参附注射液联合表柔比星和紫杉醇治疗三阴性乳腺癌效果较好,可显著降低患者肿瘤直径,还可降低FOXAl和BRCAl蛋白水平,且不良反应较低,在临床具有一定的推广应用价值。  相似文献   
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