论著

TAP 水平与乳腺癌分子分型、临床病理特征的相关性分析

Relationship between TAP level and molecular typing and clinicopathological features of breast cancer

:359-366
 
       目的  探讨TAP水平与乳腺癌分子亚型及临床病理参数之间的相关性。方法  以2021年3月—2025年1月期间收治的150例乳腺癌病例为样本,采用静脉采血方式测定TAP凝聚物表面积指标,通过免疫组织化学EnVision双步染色技术,对雌激素受体(ER)、雄激素受体(AR)、孕激素受体(PR)、Ki-67及p53等表达水平进行分析,采用荧光原位杂交(FISH)对人表皮生长因子受体2(HER2)基因扩增状态进行检测。结果  150例患者中,TAP强阳性131例,TAP弱阳性15例,TAP阴性4例,TAP阳性率97.33%。免疫表型:ER阴性43例,ER阳性107例;AR阳性133例,AR阴性17例;PR阴性60例,PR阳性90例;p53阳性73例,p53阴性77例;HER2强阳性41例,HER2弱阳性89例,HER2阴性20例;Ki-67增殖指数≥20% 116例,Ki-67增殖指数<20% 34例。FISH对65例免疫组织化学检测结果为HER2(2+ )的乳腺癌病例进行基因扩增状态分析,其中阳性7例,阴性58例。Ki-67高增殖组TAP表达水平显著高于低增殖组(P<0.05);不同临床分期患者TAP表达水平存在差异(P<0.05);三阴型、HER2阳性型、Luminal A型和Luminal B型的患者之间的TAP表达水平存在差异(P<0.05),各分子分型(HER2阳性型、三阴型、Luminal A型和Luminal B型)与其对应非分型组的TAP表达均无统计学差异(均P>0.05)。结论  TAP在乳腺癌中广泛表达,且与Ki-67增殖指数、临床分期呈正相关。虽然不同分子分型间TAP表达存在总体差异,但具体亚型对比未显示显著性,后期需扩大样本量验证。
       Objective  To explore the relationship between tumor abnormal protein(TAP)level and molecular typing and clinicopathological features of breast cancer.Methods  A total of 150 breast cancer cases admitted from March 2021 to January 2025 were enrolled in this study.The surface area of TAP condensates was measured using venous blood samples.The expression levels of estrogen receptor(ER),androgen receptor(AR),progesterone receptor(PR),Ki-67,and P53 were analyzed via immunohistochemistry(IHC)using the EnVision two-step staining technique.The amplification status of the human epidermal growth factor receptor 2(HER2+)gene was determined using fluorescence in situ hybridization(FISH).Results  Among 150 patients,131 cases were strongly positive,15 cases were weakly positive and 4 cases were negative,with a positive rate of 97.33%.Immunophenotype:ER positive in 107 cases and ER negative in 43 cases,133 cases were  positive for AR and  17 cases were negative,PR was positive in 90 cases and negative in 60 cases,73 cases were positive for p53 and 77 cases were negative.HER2 is strongly positive in 41 cases,weakly positive in 89 cases and negative in 20 cases.There were 116 cases with Ki-67 proliferation index ≥ 20% and 34 cases with Ki-67 proliferation index < 20%.Sixty-five cases of breast cancer HER2(2 )were detected in the later stage.by FISH,of which 7 cases were positive and 58 cases were negative.The expression level of TAP in patients with high Ki-67 proliferation index was higher than that in patients with low Ki-67 proliferation index(P<0.05).The expression level of TAP in patients with different clinical stages was different(P<0.05).There were differences in TAP expression levels among patients with triple negative type,HER2 positive type,Luminal A type and Luminal B type(P<0.05).There was no statistical difference in TAP expression between each molecular type(triple negative type,HER2 positive type,Luminal A type and Luminal B type)and its corresponding non-typing group(all P>0.05).Conclusions  TAP is widely expressed in breast cancer,and it is positively correlated with Ki-67 proliferation index and clinical stage.Although there is a general difference in TAP expression among different molecular typing,the comparison of specific subtypes shows no significance,and it needs to be verified by expanding the sample size 
论著

戴明循环管理法的QCC活动对提高内镜病理标本标识正确率的影响

The influence of the QCC activity based on Deming cycle management on improving the accuracy rate of endoscopic pathological specimen identification

:209-213
 
       目的 通过戴明循环管理法的品管圈(QCC)活动, 提升内镜中心病理标本标识的正确率与病理标本管理安全性。方法 采用基于戴明循环管理法的QCC活动, 对内镜中心病理标本标识质量进行现状把握、原因分析并制定对策, 比较QCC活动开展前后内镜病理标本标识的正确率。结果 QCC活动后, 内镜中心病理标本标识的正确率从99.8%提高至100%(P<0.05)。结论 内镜中心通过开展基于戴明循环管理法的QCC活动, 显著提升了内镜病理标本管理安全性与工作效率。
       Objective To improve the accuracy of pathological specimen identification and the safety of pathological specimen management in endoscopy center through quality control circle(QCC)activity based on Deming cycle management.Methods QCC activity based on Deming cycle management was used to summarize the status quo,analyze the causes and formulate countermeasures for the quality control of pathological specimen identification in endoscopy center.The accuracy rate of endoscopic pathological specimen identification before and after QCC activity was compared.Results After QCC activity, the accuracy of pathological specimen identification in endoscope center increased from 99.8% to 100%.Conclusions QCC activities based on Deming cycle management can greatly improve the safety and efficiency of endoscopic pathological specimen management.
论著

母细胞性浆细胞样树突细胞肿瘤临床病理特征分析

Analysis of clinicopathological features of blastic plasmacytoid dendritic cell neoplasm and literature review

:30-34
 
目的 学习母细胞性浆细胞样树突细胞肿瘤(BPDCN)的临床病理及免疫表型特征,总结该少见肿瘤的病理诊断经验。方法 回顾分析2例BPDCN患者临床资料,通过苏木素-伊红(HE)染色分析肿瘤组织及细胞形态,通过免疫组织化学染色分析肿瘤免疫表型,通过流式细胞学检测骨髓有无肿瘤侵犯,并结合文献分析。结果 本报道中1例为97岁女性,临床以皮肤瘀斑结节为首发症状,肿瘤细胞真皮内弥漫浸润,不侵犯表皮,细胞中等大小,核形不规则,核仁不明显。另1例为69岁男性,临床以淋巴结肿大为首发症状,淋巴结结构完全破坏,肿瘤细胞弥漫浸润,细胞呈中等大小的母细胞样,核仁明显。2例免疫表型均表达CD123、CD4、CD56、TDT,不表达B系、T系淋巴细胞及髓系标志物,肿瘤均累及骨髓。结论 BPDCN是一种罕见的淋巴造血肿瘤,临床常以皮肤病变或淋巴结肿大为首发症状,临床过程具高度侵袭性,通常伴有骨髓侵犯。该肿瘤需与具有母细胞形态的淋巴系肿瘤和白血病相鉴别,诊断需结合临床信息、HE形态及免疫组化结果综合判断。
Objective To summarize the diagnostic experiences of blastic plasmacytoid dendritic cell neoplasm (BPDCN) based on the study of its clinicopathological features and immunophenotypes. Methods The clinical data of 2 patients with BPDCN were collected, the structure alteration and cell morphology were observed by HE staining, the immunophenotype of tumor cells were studied by immunohistochemistry staining and flow cytometry was adopted to confirm the bone marrow involvement. Results Two patients, one of whom was a 97 year-old female, presented with cutaneous ecchymosis nodules as the first symptom. The epidermis, but not the dermal, was diffusedly infiltrated by tumor cells, which were medium-sized with irregular nuclei without prominent nucleoli. The other case was a 69 year-old male with lymph node enlargement as the first symptom. The skin was normal, but the lymph nodes were invasively destroyed by tumor cells, which were medium-sized blast-like with prominent nucleoli. The immunophenotypes of the two patients were both positive for CD123, CD4, CD56 and TDT, but negative for B, T lymphocyte derived and myeloid origin markers, both of which involved bone marrow. Conclusions BPDCN is a rare form of hematological neoplasm, skin symptoms or lymph node enlargement may be presented as the initial symptom, the clinical course were highly aggressive with high frequency of bone marrow involvement. The blastic-like lymphoma and leukemia entities should be considered into account for differential diagnose. The precise diagnosis of BPDCN should be established by integrating histomorphology, immunophenotype and clinical presentation information comprehensively.
论著

82例子宫内膜癌错配修复蛋白表达与临床病理特征的关系

The structure and clinicopathological features of endometrial carcinoma in 82 cases

:44-48
 
目的 探讨子宫内膜癌构成及临床病理特征。方法 以南平市第一医院2020年1月—2022年6月期间收治的82例子宫内膜癌患者为研究对象,收集其临床资料,通过免疫组织化学染色法检测4种错配修复蛋白表达,并分析错配修复蛋白表达与临床病理特征的关系。结果 82例患者中,70例(85.37%)为子宫内膜样癌,病理组织学类型以G1级30例(42.86%)为主,其他类型较为少见。错配修复蛋白表达总缺失率为35.71%,其中MUTL同源物1(MLH1)单独缺失率为2.86%,错配修复蛋白2抗体(MSH2)为4.29%,错配修复蛋白6抗体(MSH6)为14.29%,肿瘤错配修复基因PMS2抗体(PMS2)为14.29%;错配修复表达缺失(dMMR)组患者年龄50岁以上、伴脉管侵犯和淋巴结转移、组织学G3级和FIGO分期Ⅲ期占比高于错配修复表达正常(pMMR)组患者(P<0.05);MSH6蛋白表达缺失易发生在年龄50岁以上、有家族相关疾病史的患者(P<0.05);PMS2蛋白表达缺失易发生在组织学G2级、FIGO分期Ⅲ期、妊娠1次及以上、脉管内癌栓和淋巴结转移的患者(P<0.05)。结论 子宫内膜癌错配修复蛋白表达与其部分临床病理特征存在密切关联,可为患者后续治疗提供有价值的指导。
Objective To investigate the composition and clinicopathological features of endometrial carcinoma.Methods A total of 82 cases of endometrial carcinoma patients admitted to the First Hospital of Nanping City from January 2020 to June 2022 were studied.Epidemiological data were collected,and the expression of 4 mismatch repair proteins were detected by immunohistochemical staining,and their relationship with clinicopathological features was analyzed.Results Among 82 patients,70 cases(85.37%)were endometrioid carcinoma,and 30 cases(42.86%)were mainly G1 grade,other types were rare.The total deletion rate of mismatch repair proteins expression was 35.71%,in which MLH1 alone was 2.86%,MSH2 was 4.29%,MSH6 was14.29% and PMS2 was14.29%.The proportions of dMMR patients over 50 years old,with vascular invasion and lymph node metastasis,G3 grade histology and FIGO stage Ⅲ were significantly higher than those of the pMMR group(P<0.05).The loss of MSH6 protein expression was more likely to occur in patients over 50 years old with a family history of related diseases(P<0.05).The deletion of PMS2 protein expression was more likely to occur in patients with histological G2 grade,FIGO stage III,pregnancy of once or more and intravascular cancer thrombin and lymph node metastasis(P<0.05).Conclusions The expression of mismatch repair proteins in endometrial carcinoma is closely related to some clinicopathological features,which provides valuable guidance for follow-up treatment.
临床诊疗

胃肠道套细胞淋巴瘤的临床病理学特点分析及预后影响因素分析

:133-137
 
目的 探讨分析胃肠道套细胞淋巴瘤的临床病理学特点分析及预后情况。方法 选取2019年1月—2021年2月间赣州市人民医院收治的50例胃肠道套细胞淋巴瘤患者为观察组,选取本院同期就诊的50例非胃肠道套细胞淋巴瘤患者为对照组。结果 50例胃肠道套细胞淋巴瘤患者的主要临床表现以腹痛为主占比50.00%;好发于回盲部、回肠、升结肠、直肠、乙状结肠,占比依次为54.00%、42.00%、36.00%、36.00%、28.00%;以多发性黏膜息肉样病变40.00%多见,死亡16例(32.00%)。年龄>60岁、伴有脾脏肿大的胃肠道套细胞淋巴瘤死亡率更高(P<0.05)。观察组患者浅表淋巴结侵犯的比例明显高于对照组(P<0.05)。结论 胃肠道套细胞淋巴瘤主要表现为腹痛等,多发于结直肠,浅表淋巴结侵犯相对更多,以多发性黏膜息肉样病变多见,年龄>60岁、伴有脾脏肿大的患者预后相对较差。
论著

356例甲状腺Bethesda Ⅲ类结节的细胞病理学诊断分析

Cytopathological diagnosis of BethesdaⅢ thyroid nodules: a report of 356 cases

:14-17
 
目的 探讨甲状腺Bethesda Ⅲ类(AUS/FLUS)结节的诊断原因,以及亚分类在预测结节恶性风险(risk of malignancy,ROM)中的价值。方法 收集356例Bethesda Ⅲ结节患者,对其诊断原因, ROM及亚分类进行总结分析。结果 在97例手术切除标本中,72例恶性肿瘤均为甲状腺乳头状癌(papillary thyroid carcinoma,PTC),Bethesda Ⅲ类的ROM为74.2%。影响PTC诊断的主要原因有病灶小、穿刺细胞量稀少、缺乏乳头状结构及细胞核特征不典型;次要原因有间质显著纤维化或钙化、涂片不合格、固定不当、染色不佳及细胞学诊断经验欠缺等。Bethesda Ⅲ类的亚分类:132例为低风险组,其中12例手术切除,ROM为8.3%;122例为高风险组,其中70例手术切除,ROM为92.9%;102例为中风险组,其中15例手术切除,ROM为40.0%;高风险组和低/中风险组之间的差异有统计学意义(P<0.05)。结论 Bethesda Ⅲ类的诊断具有一定的主观性和经验性,而对Bethesda Ⅲ类结节进行风险相关的亚分类,有助于实现更好的ROM分层并改善此类病变的临床管理。
Objective To investigate the diagnostic causes of Bethesda Ⅲ (AUS/FLUS) thyroid nodules and the value of subcategories in predicting risk of malignancy (ROM) of thyroid nodules. Methods The data of 356 cases of Bethesda Ⅲ nodules were collected, and the causes, ROM and subcategories were summarized. Results In 97 resected specimens, 72 were diagnosed as papillary thyroid carcinoma (PTC), and the ROM of Bethesda Ⅲ was 74.2%. The main factors affecting the diagnosis of PTC were small lesions, few puncture cells, atypical nuclear features and lack of papillary structure. Secondary factors included significant interstitial fibrosis or calcification, unqualified smear, improper fixation, poor staining and lack of cytological diagnosis experience. According to the subcategories of Bethesda Ⅲ, 132 cases were included in low-risk group, nodules of 12 cases in the group were resected, which ROM was 8.3%; 122 cases were included in high-risk group, nodules of 70 cases were resected, which ROM was 92.9%; 102 cases were included in middle-risk group, nodules of 15 cases were resected, which ROM was 40.0%. The differences between high-risk group and low/medium-risk group were statistically significant (P<0.05). Conclusion The diagnosis of Bethesda Ⅲ is subjective and empirical in some degree, and the risk related subcategories of Bethesda Ⅲ nodules is helpful to achieve better ROM stratification and improve the clinical management of the disease.
论著

脾脏炎性假瘤样滤泡树突细胞肉瘤的临床病理分析

Clinicopathologic analysis of inflammatory pseudotumor-like follicular dendritic cell sarcoma of the spleen

:62-65
 
目的 探讨脾脏炎性假瘤样滤泡树突细胞肉瘤( IPT-like FDCS )的临床病理学特征、诊断及其鉴别诊断。方法 对2例脾脏 IPT-like FDCS 病例进行临床、组织病理学、免疫组织化学及原位杂交特征的观察及总结,并复习国内外相关文献。结果 2例患者均以腹部不适入院,平均年龄66岁,影像学检查提示脾脏占位;镜下特点:肿瘤由圆形、卵圆形及梭形细胞组成,呈编织状、束状或席纹状排列,背景中见多量淋巴细胞、浆细胞及少许中性粒细胞混杂并伴灶性出血、坏死;免疫组化结果:肿瘤细胞不同程度地表达CD21、CD23滤泡树突细胞标记物,两例均不表达CD35,EBER(EBV-encoded RNA)原位杂交显示瘤细胞散在阳性。结论 脾脏IPT-like FDCS 是一种好发于老年女性的罕见的低度恶性肿瘤,与EB病毒感染有关,其生物学行为相对惰性,手术完整切除肿瘤是最佳治疗方式,合理选用免疫标记物、原位杂交检测结合组织病理学可帮助正确诊断。
Objective To study the clinicopathologic features,diagnosis and the differential diagnosis of inflammatory pseudotumor-like follicular dendritic cell sarcoma. Methods We analyzed clinical features,histopathological,immunohistochemical results and in situ hybridization characteristics of two cases. Besides,to relevant literatures of domestic and aboard were also reviewed. Results Two patients were hospitalized for abdominal discomfort, their average age was 66. Imageological examination showed splenic space-occupying. The neoplasms were composed of round,oval and spindle cells and were arranged in whorls and a spiral or storiform growth pattern,mixed with abundant lymphocytes and plasma cells and a few neutrophils with focal bleeding and necrosis. Immunohistochemically,varying degrees, tumor cells showed the expression of at least one of the FDC markers,including CD21 and CD23 protein except with CD35,with scattered positive EBER in situ hybridization. Conclusion Inflammatory pseudotumor-like follicular dendritic cell sarcoma of the spleen is a rare low-grade malignant tumor associated with EBV infection,which is older female predominated and with a inert biological behavior.The best treatment of the tumor is to complete surgical removal.Using reasonable application of immunohistochemical markers, in situ hybridization combined with histopathology are helpful for correct diagnosis.
论著

数字病理技术及数字病理诊断在基层医院的应用

Application of digital pathological technology and digital pathological diagnosis in primary hospitals

:83-85
 
目的 探讨数字病理技术及数字病理诊断在基层医院的应用。方法 回顾性分析2018年1月—2019年12月两家医院的病理诊断报告共18 688例。将2018年1月—2018年12月病例纳入A组(n=8 400),将2019年1月—2019年12月病例纳入B组(n=10 288)。采用云康远程病理会诊平台,所有病例依次按编号通过扫描绑定到平台软件的对应病例中,由同一位初诊病理医生和不同的远程病理平台专家分别完成初、复诊。通过三审发布专家团队来评价远程病理诊断初诊及复诊的准确率。结果 A组初诊病理医生正确诊断6 569例,准确率78.20%,复审病理医生正确诊断8 215例,准确率97.80%;B组初诊病理医生正确诊断9 444例,准确率91.80%,复审病理医生正确诊断10 102例,准确率98.19%;两组病理诊断中,B组初诊病理医生诊断正确率高于A组初诊病理医生准确率,差异有统计学意义(P<0.05);两组的复审病理医生准确率比较,差异无统计学意义(P>0.05)。结论 日常开展数字病理技术及数字病理诊断可以有效提高基层诊断医生的诊断水平,值得在基层医院广泛和长期应用推广。
Objective To explore the application of digital pathological technology and digital pathological diagnosis in primary hospitals. Methods A total of 18 688 cases of pathological diagnosis reported in two hospitals from January 2018 to December 2019 were retrospectively analyzed. Cases from January to December 2018 were included in group A (n=8 400), and cases from January to December 2019 were included in group B (n=10 288).Yunkang remote pathology consultation platform was adopted. All cases in turn were scanned and bound to the corresponding cases of the platform software by number. The same pathologist and different remote pathological platform experts completed the preliminary and follow-up respectively, to evaluate the accuracy of remote pathological diagnosis at the first and second diagnosis by releasing the expert team in the third audit. Results In group A, the pathologists correctly diagnosed 6 569 cases, with an accuracy rate of 78.20%, The correct diagnosis rate of 8 215 cases was 97.80%,The primary pathologists in group B correctly diagnosed 9 444 cases, with an accuracy rate of 91.80%.The correct diagnosis rate of 10 102 cases was 98.19%,In the two groups of pathological diagnosis, the diagnostic accuracy rate of pathologists in group B was higher than that in group A.The difference was statistically significant (P <0.05).The accuracy of pathologists in the two groups was compared.The difference was not statistically significant (P >0.05). Conclusion Daily development of digital pathological technology and digital pathological diagnosis can effectively improve the diagnosis level of grassroots doctors. It is worthy of extensive and long-term application in primary hospitals.
论著

内镜活检Crohn病的临床病理分析

Endoscopic biopsy of Crohn's disease:a clinicopathological Study

:52-56
 
目的 探讨内镜活检Crohn病(CD)的临床病理特征,为临床提供更可靠的诊断。方法 回顾性分析内镜活检12例CD的临床表现、内窥镜特征,采用HE染色及免疫组化EnVision二步法。结果 显微镜下CD的组织学形态主要特征是非干酪样坏死性肉芽肿、裂隙状溃疡、黏膜及黏膜下层不均匀分布的重度炎症,淋巴管扩张和纤维组织增生,免疫组化染色CD68、D2-40、S-100均表达。结论 CD是一肿少见的炎症性肠病,回盲部及末段回肠是最好发部位,主要表现反复腹泻、血便等症状,内镜下见多灶溃疡,不连续性病变等特征,组织学见裂隙性溃疡,黏膜及黏膜下层的重度炎症且不均匀分布,位于生发中心的非干酪结节病样肉芽肿、淋巴管扩张和纤维组织增生等非特异性特征,可靠的病理诊断要结合临床、内镜、影像等检查及多部位多次活检。
Objective To investigate the clinical and pathological features of endoscopic biopsy tissue of Crohn disease (CD) and further to provide more reliable evidence for clinic. Methods A retrospective analysis of 12 cases of endoscopic biopsy tissue about CD’s clinical manifestations and endoscopic features,by HE staining and immunohistochemistry EnVision two-step method. Results The morphology of CD specimen is characterized by non-caseous necrotizing granuloma,ulceration,mucosal and submucosal uneven distribution of severe inflammation,dilated lymph vessels and fibrous hyperplasia. Immunohistochemical staining , all of cases express CD68,D2-40 and S-100. Conclusion CD is a rare inflammatory bowel disease. The majority of CD arises in ileocecal and terminal ileum. The main symptoms show repeated diarrhea,bloody stool and others. Endoscopic examination revealed multifocal ulcers,discontinuous lesions and other characteristics. Histological examination showed that there were nonspecific features such as fissure ulcer,severe inflammation in mucosa and submucosa with uneven distribution,non-caseous sarcoid-like granuloma in the germinal center,lymphangiectasis and fibrous tissue hyperplasia. An reliable pathological diagnosis is made that depends on many examinations including clinical,endoscope,radiology and multiple biopsy.
论著

原发于前列腺的产黏液尿路上皮型腺癌的临床病理分析

Clinicopathologic analysis of primary mucin-producing urothelial-type adenocarcinoma of prostate

:58-62
 
目的 探讨原发于前列腺的产黏液尿路上皮型腺癌的临床病理特征、诊断及鉴别诊断。方法 对1例极其罕见的原发于前列腺的产黏液尿路上皮型腺癌病例的临床诊治经过、病理组织学及免疫组织化学特征进行观察和总结,并复习国内外相关文献。结果 患者77岁,因排尿困难入院, B超提示前列腺增大,前列腺异常回声性质待查;CT及肠镜检查均未发现膀胱及结直肠恶性肿瘤;血清PSA未见升高。在当地医院行前列腺穿刺检查,病理诊断为前列腺黏液腺癌。遂于我院行腹腔镜下前列腺根治手术,镜下表现为黏液腺癌伴多量黏液湖形成,并见尿路上皮的腺性化生及原位腺癌与黏液腺癌的移行过渡;免疫组化示CK7及34βE12弥漫表达,CDX-2及CEA局灶表达,其余CK20、β-catenin、GATA3、PSA、PSAP、AR及P504S均阴性。结论 原发于前列腺的产黏液尿路上皮型腺癌十分罕见,其预后差,对内分泌治疗不敏感,准确诊断将有利于指导临床医生选择正确的治疗方法及评估其预后。
Objective To investigate clinicopathological characteristics, diagnosis and differential diagnosis of primary mucin-producing urothelial-type adenocarcinoma of prostate. Methods We reported a rare case of mucin-producing urothelial-type adenocarcinoma of prostate and reviewed relevant literatures to discuss the clinicopathological features, diagnosis and differential diagnosis. Results In this case, the patient was a 77-year-old male with the history of dysuria. B-ultrasound indicated benign prostatic enlargement and abnormal echogenicity remained to be determined. CT scan and gastrointestinal endoscopy didn't show any evidence of bladder and colorectal tumor. No serum prostate-specific antigen (PSA) increased. The patient underwent laparoscopic radical resection of prostate cancer. Microscopically, the tumor presented as mucinous carcinoma, similar to colorectal mucinous carcinoma, but the migration from the normal prostatic urethra was observed and the urethral epithelium at the transitional site was characterized by adenoepithelial metaplasia and adenocarcinoma in situ. Immunohistochemical staining showed neoplastic cells were diffuse and strongly positive for CK7 and 34βE12, focally positive for CDX-2 and CEA and negative for CK20, β-catenin, GATA3, PSA, PSAP, AR and P504S. Conclusion Mucin-producing urothelial-type adenocarcinoma of prostate is an extremely rare tumor. It has a poor prognosis and it is not sensitive to endocrine therapy.
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