Immunohistochemical Study of Colorectal Polyps with Antibodies against CEA,CA19-9, CA125, CA15-3 (DF3), PCNA and p53

Abstract: We analyzed the expression of CEA, CA19-9, CA125, CA15-3 (DF3), PCNA and p53 immunohistochemically in 14 tissue specimens of mucosal cancers in adenoma, seven tubulovillous adenoma specimens, and 16 tubular adenoma specimens. The rates of positive staining for mucosal cancer in adenoma, tubulovillous adenoma and tubular adenoma specimens, respectively, were: for CEA: 100%, 85.7% and 75%; for CA19-9: 71.4%, 71.4% and 56.2%; for CA125:0%, 0% and 0%;for CA15-3 (DF3): 64.3 %, 0% and 0 %; for PCNA: 100%, 88.9% and 56.2%; and for p53: 35.7%, 0% and 0% . The results suggest that the expressions of CEA, CA19-9, CA15-3 (DF3), PCNA and p53 are related to colorectal tumorigenesis. None of the specimens studied showed staining for CA125, suggesting that CA125 is not involved in the early stages of colorectal carcinogenesis. There was no significant difference in the rates of positive staining for CEA and CA19-9 among mucosal cancer in adenoma, tubular adenoma and tubulovillous adenoma specimens. However, the rates of positive staining for PCNA and p53 were significantly higher in mucosal cancer in adenoma specimens than for tubular adenoma specimens (p<0.05), and the rate of CA15-3 (DF3) positive staining was significantly higher for mucosal cancer in adenoma than for tubulovillous adenoma (p<0.01) and tubular adenoma (p< 0.001) specimens. Therefore, the CA15-3 (DF3) antigen is an immunohistochemical marker for colorectal carcinomas. The present results suggest that CA15-3 (DF3), PCNA and p53 play important roles in the genesis of colorectal adenomas.     

Histologic Classification of Endoscopically Removed Flat Colorectal Polyps: A Multicentric Study

A total of 594 flat colorectal polyps, removed at endoscopy, were histologically classified into non-neoplastic (n=49) and neoplastic (n=545) polyps. Non-neoplastic polyps were subdivided into metaplastic (n=45) and hyperplastic (n=4), whereas neoplastic polyps were subdivided into adenomas (n=481), intramucosal carcinomas (n=28) and invasive adenocarcinomas (n=36). Several adenoma phenotypes were discerned: tubular (n=375), serrated (n=59), villous (n=39), mixed (n=7) and fenestrated (n=1). Intramucosal carcinomas were subdivided into tubular (n=26) and serrated (n=2), and invasive adenocarcinomas into tubular (n=32), serrated (n=3) and fenestrated (n=1). The microscopic characteristics of each histologic phenotype described in this communication are defined and illustrated.     

Polypoid nonchromaffin paraganglioma of the duodenum

Summary A polypoid tumor was surgically removed from the second part of the duodenum of a 56-year-old male. The main body consisted of large epithelioid cells arranged in an adenoma like pattern of strands and nests. These cells were argyrophil and had marked nonspecific esterase activity. Unmyelinated nerves with proliferated Schwann cells accompanied these epithelioid cells together with scattered gangliocyte like elements. Ultramicroscopically, the epithelioid cells were seen to contain round electron dense granules, 150 nm in diameter on average. The tumor is considered to be a nonchromaffin paraganglioma, as it probably developed from paraganglion cells associated with small arteries or branches of the vagus nerve, or from the undifferentiated pluripotent APUD cells of the duodenum.     

Non-adenomatous colorectal polyposis syndromes

Gastrointestinal polyps are common lesions that usually present singly or in small numbers. Although the term ‘multiple colorectal polyposis’ was originally applied to patients carrying at least 100 large intestinal adenomas, it has subsequently become broadened to include patients carrying multiple polyps regardless of their nature. Most of the non-adenomatous polyposis syndromes are hereditary. They can be classified according to the dominant type of polyp, their distribution in the gastrointestinal tract and their potential for the development of gastrointestinal cancers. This review summarises their main clinical, genetic and histopathological features.     

经上颌窦前壁钻孔行鼻窦内窥镜术30例报告

报告经上颌窦前壁钻孔行鼻窦内窥镜手术３０例，疗效较好。与鼻腔、鼻窦内窥镜手术比较，该术式具有观察方便，出血少，反应轻，操作方便，并发症少，术后复发率低等优点。     

孕激素治疗子宫内膜癌的形态学观察与治疗机理探讨

目的：通过孕激素对子宫内膜腺癌治疗后的形态观察，而探讨其治疗机理。方法：对我院经孕激素治疗并手术切除的４２例子宫内膜腺癌标本及３４例未用孕激素治疗的子宫内膜腺癌诊刮标本，进行光镜、电镜的腺癌细胞形态学观察。结果：孕激素治疗后的腺癌细胞分化趋向成熟，其分泌活跃，同时，还在癌组织中观察到凋亡的腺癌细胞。未经孕激素治疗的子宫内膜腺癌细胞，其组织排列紊乱，极性消失，有些腺体呈背靠背现象。结论：孕激素对肿瘤细胞有直接作用，使癌细胞生长受抑，促使其分化转向成熟，术前与术后应用孕激素治疗，可减少腹腔种植及转移，减少术后复发机会。     

182例子宫内膜癌的疗效分析

目的：探讨子宫内膜癌的疗效从其预后因素。方法;收集1979年4月至1991年4月随访资料完整的182例子宫内膜癌。全组病人均经手术及术前放疗，部分病人术后放疗。经统计学X2检验分析预后。结果：总5年生存率80.2％，Ⅰ期91.9％，Ⅱ期81％，Ⅲ期56％，Ⅳ期0，临床分期、病理类型、组织学分级、宫体肌层浸润盆腔淋巴结转移是影响预后的重要因素、结论;术前分段诊刮至关重要、放宽1期病例下术指征是提高Ⅰ期盆腔淋巴结转移病例存活率的关键，术前术后放疗是防止复发提高存活率的有效措施。     

认知行为干预对子宫内膜癌手术患者术后病耻感及自我效能的影响

目的 探讨认知行为干预对子宫内膜癌手术患者术后病耻感及自我效能的影响.方法 选取2017年1月—2019年12月医院收治的子宫内膜癌手术患者80例为研究对象,按照组间基本特征具有可比性的原则分为对照组和观察组,各40例.对照组予以常规护理干预,观察组在对照组基础上给予认知行为干预,比较两组患者干预8周后病耻感及自我效能...