目的 探讨直肠神经内分泌肿瘤的临床病理特征。方法 回顾性分析46例直肠神经内分泌肿瘤患者的临床病理资料,对不同病理分级的患者在性别、年龄、肿瘤直径、浸润深度、肝及淋巴结转移等方面进行比较。结果 直肠神经内分泌肿瘤男性多见,肿瘤多位于直肠中下段。免疫组化检测显示CgA、Syn、CD56阳性率分别为40.0%、97.8%、100%。36例Ki-67阳性指数≤2％,6例Ki-67阳性指数在3％～20％,4例Ki-67阳性指数＞20％。不同病理分级的肿瘤与患者年龄、肿瘤直径、浸润深度、淋巴结及肝转移相关,与性别不相关。结论 直肠神经内分泌肿瘤缺乏临床特异性症状,联合CgA、Syn和CD56染色可提高直肠神经内分泌肿瘤的诊断率。病理分级对预测肿瘤浸润深度、肝或淋巴结转移有重要参考价值。

Objective To investigate the pathological and clinical significance of 46 cases of rectal neuroendocrine tumors(NET). Methods Retrospectively analyzed the clinical and pathological feature of 46 patients with rectal NET, and assessed possible interactions between different pathological grades and gender, age, tumor diameter, depth of invasion, lymph node and liver metastasis. Results Rectal NET appeared more frequently in males than in females. Most tumors located in middle and distal third of rectum. The positivity rates of immunohistochemical marker CgA, Syn, CD56 were 40.0%, 97.8%, 100.0%, respectively. The cases of Ki-67 positivity rate under 2%, ranged between 3%-20%, above 20% were 36, 6, 4, respectively. Different pathological grades were significantly correlated with age, tumor diameter, depth of invasion, lymph node and liver metastasis, but not with gender. Conclusion Rectal NET had nonspecific symptoms. Combined immunohistochemical staining, such as CgA, Syn and CD56, was important in the evaluation of rectal NET. Pathological grading might be very useful for prediction of invasion depth, lymph node and liver metastasis.

目的 观察miR-9在胃癌组织中的表达水平及其与临床病理的相关性。方法 采用实时荧光定量PCR方法分别检测28例胃癌及正常胃组织中miR-9的表达水平,并分析其表达情况与临床病理资料的关系。结果 胃癌组织miR-9的表达水平[0.0078(0.0031~0.0142)]显著低于相应正常胃组织[0.0177(0.0084~0.0311), P<0.05],尤其是伴淋巴结转移者[0.0021(0.0006～0.0685)]miR-9表达水平明显降低。结论 胃癌组织中miR-9低表达,且与胃癌淋巴结转移有关。

Objective To investigate the correlation between the level of miR-9 expression and clinicopathology in gastric carcinoma. Methods The expression of miR-9 in 28 cases of gastric carcinoma tissues and normal gastric tissues were detected by quantitative real-time PCR, and the relationship between the expression and clinicopathology was analyzed. Results The expression of miR-9 expression in gastric carcinoma tissues [0.0078(0.0031~0.0142)] was significantly lower compared with the corresponding normal gastric tissues [0.0177(0.0084~0.0311), P<0.05], especially in lymph node-invasive carcinoma [0.0021(0.0006～0.0685)]. Conclusion miR-9 was down regulated in gastric cancer tissues, which was significantly associated with lymph node metastasis.

目的 分析总结12例原发性肺淋巴上皮瘤样癌(LELC)的临床病理特点。方法 回顾性分析12例肺LELC患者的临床病理资料。结果 12例肺LELC患者的组织学标本中,肿瘤细胞均明显表达HCK,原位杂交EBER阳性率为91.7%。全组中位生存期61.3个月,2年和5年生存率分别为84.6%和57.7%。结论 原发性肺LELC临床罕见,发病可能与EB病毒感染有关,经及时治疗有较好的预后。

Objective To investigate the pathological and clinical significance of 12 cases with primary Lymphoepithelioma-like carcinoma of the lung (LELC). Methods Retrospectively detectded and analyzed the clincalpathological feature of 12 cases of LELC of the lung. Results Histological study showed that tumor cells were significantly expressed HCK by immunohistochemistry staining and showed out 91.7% positive rate of EBER by situ hybridization. In this series, the median survival time was 61.3 months. The overall 2 and 5 year survival rates of the 12 cases were 84.6% and 57.7%. Conclusion Pulmonary LELC is very rare. It may be associated with Epstein-Barr virus infection, and has a batter prognosis after therapy.

目的 探讨子宫内膜微腺体癌的临床病理特征、诊断及鉴别诊断。方法 对1例首诊误诊为子宫颈微腺体增生的子宫内膜微腺体癌病例进行临床、病理组织学及免疫组织化学特征的观察及总结,同时进行相关文献复习。结果 本例患者年龄61岁,因绝经后阴道不规则流血1年就诊,B超提示子宫内膜不规则增厚,并行分段诊刮术,先后两次诊刮标本光镜下均见黏液性柱状上皮呈乳头状及网格状结构,细胞轻度异型,核分裂罕见,间质内大量中性粒细胞浸润伴腺上皮内“微脓肿”形成;免疫组化示:上皮成分P16弥漫强(+),CEA小灶(+),Vimentin弥漫(+),ER约90%(+,中-强),PR约90%(+,弱),Ki-67约3%(+),间质细胞CD10(+)、CD34(-)。结论 子宫内膜微腺体癌是一种极为罕见的子宫内膜黏液腺癌,其组织学形态与子宫颈良性病变微腺体增生十分相似,易于混淆,但通过免疫组化检查及详细地临床病史资料收集、分析,可以与其鉴别,从而做出正确地诊断。

Objective To investigate clinical and histopathological features, dignosis and differential diagnosis of the endometrial microglandular adenocarinoma (MGA). Methods The clinical and pathological features of microglandular adenocarinoma in a patient were observed. Immunohistochemical staining and literature review were also used. Results In the case, the age of patient was 61 years. Clinical manifestation was vaginal irregular bleeding for 1 year. Type-B ultrasound suggested endometrium was irregular thickening. Histologically, it was mainly composed of irregular shape, closely spaced small glands, and glandular cells was mild atypical. Mitosis was rarely observed. The endometrial stromata between gland were rare, but neutrophil were much observed with the formation of neutrophil microabscess in the glandular epithelium. Immunohistochemical study showed neoplastic cells were diffuse and strongly positivity for P16, diffuse positivity for vimentin, focally positive for CEA. ER and PR expression was found in approximately 90% tumor cells. The index of Ki-67 was about 3%. Interstitial cells were positivity for CD10, negativity for CD34. Conclusion The microglandular adenocarcinoma is a rare endometrial adenocarcinoma. It can be differentiated from cervical microglandular hyperplasia(MGH) and cervical mucinous adenocarcinoma by immunohistochemistry and morphological characteristics.

       目的   总结女性生殖系统中恶性中胚叶混合瘤（MMMT）的临床病理特征及预后，分析P53及错配修复蛋白与MMMT发病之间的关系。方法   收集大理大学第一附属医院2015年9月—2022年9月15例经手术切除病理诊断为MMMT的病例，总结临床病理特点、免疫表型（P53、错配修复蛋白等）、治疗方案并随访。结果  15例MMMT原发于子宫10例，卵巢5例。发病年龄范围49~76岁，平均年龄60岁，中位年龄58岁。临床表现为阴道流血或流液，伴或不伴腹痛或盆腔包块。镜下肿瘤均由不同比例的恶性上皮和间叶源性肿瘤构成，P53野生型12例，突变型3例；错配修复蛋白（MSH6、MSH2、MLH1、PMS2）检测存在缺失的有4例。15例患者中均行手术治疗，12例行盆腔淋巴结清扫术，术后辅以放化疗。随访失访2例，死亡4例，复发6例，3例术后无复发和转移。结论   恶性中胚叶混合瘤临床少见，恶性程度高，病理诊断上存在困难，需要辅以免疫组织化学染色，P53及错配修复蛋白缺失与MMMT的发生存在一定关系。治疗上需要手术切除，辅以放化疗。

    Objective  To summarize the clinical and pathological characteristics and prognosis of malignant mesodermal mixed tumor（MMMT）in the female reproductive system，and analyze the relationship between P53 and mismatch  repair proteins and the onset of MMMT．Methods  A total of 15 cases diagnosed with MMMT after surgical resection at the First Affiliated Hospital of Dali University from September 2015 to September 2022 were collected．The clinical and pathological characteristics，immune phenotype（P53，mismatch repair protein，etc. ），treatment plan were summarized．And the patients were followed-up．Results  Ten of 15 cases of MMMT were primary in the uterus and 5 of 10 in the ovaries．The age range of onset was 49 to 76 years old，with an average age of 60 and a median age of 58．Clinical manifestations included vaginal bleeding or fluid discharge，with or without abdominal pain or pelvic masses．Under the microscope，all tumors were composed of malignant epithelial and mesenchymal tumors in different proportions，with 12 cases of P53 wild-type and 3 cases of mutant type．There were 4 cases of missing mismatch repair proteins（MSH6，MSH2，MLH1，PMS2）detected．Among the 15 patients，all underwent surgical treatment，and 12 underwent pelvic lymph node dissection with postoperative adjuvant chemotherapy and radiotherapy．Two cases were lost to follow-up，four cases died，six cases recurred，and three cases had no recurrence or metastasis after surgery．Conclusions  MMMT are rare in clinical practice，with high malignancy and poor prognosis．Pathological diagnosis is difficult，and immunohistochemical staining is needed．The absence of P53 and mismatch repair protein is related to the occurrence of MMMT. Surgical  resection is required for treatment，supplemented by radiotherapy and chemotherapy．