唾液腺黏液表皮样癌组织中分化抑制因子-1和血小板反应蛋白-1的表达

目的探讨不同恶性程度的唾液腺黏液表皮样癌组织中分化抑制因子- 1（Id- 1）、血小板反应蛋白- 1（TSP- 1）的表达情况及相互关系。方法以不同恶性程度的唾液腺黏液表皮样癌和正常唾液腺组织为材料,采用免疫组化SP法检测正常唾液腺组织以及高分化、中分化和低分化黏液表皮样癌组织中Id- 1、TSP- 1基因的表达情况。结果Id- 1和TSP- 1在正常唾液腺中的阳性表达率明显低于在黏液表皮样癌组织中的阳性表达率（P值分别为0.000和0.013）。在中分化和低分化黏液表皮样癌组织中Id- 1的蛋白表达率明显高于高分化黏液表皮样癌（P值分别为0.001和0.002）,而Id- 1在中分化和低分化黏液表皮样癌组织中的蛋白表达率差异无统计学意义（P>0.05）。在低分化黏液表皮样癌组织中TSP- 1的蛋白表达率明显低于高分化黏液表皮样癌（P=0.014）,而TSP- 1在中分化和低分化黏液表皮样癌组织中的蛋白表达率差异无统计学意义（P>0.05）,在中分化和高分化黏液表皮样癌组织中的蛋白表达率差异无统计学意义（P>0.05）。TSP- 1的表达与Id- 1呈负相关（r=- 0.394,P=0.002）。结论TSP- 1的表达可能抑制黏液表皮样癌的发生,而Id- 1的表达则可能促进黏液表皮样癌的发生,二者之间呈负相关。     

p70 S6K信号通路在黏液表皮样癌发生中的作用

目的研究p70 S6K信号通路激活在黏液表皮样癌发生中的作用。方法检测p70 S6K在30例口腔黏液表皮样癌、15例正常口腔组织中的表达。结果免疫组织化学结果显示,和正常组织相比,黏液表皮样癌中p70 S6K的表达增加。结论口腔黏液表皮样癌p70 S6K的表达增加可能是介导黏液表皮样癌发生的主要机制之一。     

RKIP及NPRL2在涎腺黏液表皮样癌中的表达及其临床意义

目的:研究口腔黏液表皮样癌组织中RKIP和抑癌基因NPRL2的表达,探讨其表达与口腔黏液表皮样癌各临床病理因素之间的关系.方法:应用免疫组织化学染色方法检测48例口腔黏液表皮样癌组织和13例正常组织中RKIP和NPRL2的表达,并对其与临床病理特征的关系进行统计学分析.结果:RKIP和NPRL2均表达于黏液表皮样癌细胞...     

Maspin蛋白在唾液腺黏液表皮样癌中的表达及意义

目的：检测乳腺丝氨酸蛋白酶抑制剂（marray serine proteinase inhibitor，Maspin）在唾液腺黏液表皮样癌中的表达．及其与唾液腺黏液表皮样癌患者临床病理特征之间的关系。方法：应用免疫组织化学方法，分别对58例唾液腺黏液表皮样癌的癌组织及其癌旁正常腺体组织标本行Maspin蛋白含量的半定量测定，与各临床病理指标进行统计学分析，采用SPSS13．0统计学软件进行非参数检验。结果：Maspin蛋白在唾液腺黏液表皮样癌的癌组织中的表达显著高于癌旁正常腺体组织（P〈0．001），唾液腺黏液表皮样癌组织中Maspin蛋白的表达与淋巴结转移（P=0．020）、术后转移（P=0．008）呈负相关，与总体生存状况呈正相关（P=0．028）。结论：Maspin蛋白的检测在唾液腺黏液表皮样癌患者中可能具有较好的预后判断价值。     

上颌前牙区原发性黏液表皮样癌1例

黏液表皮样癌多发生于唾液腺组织,如腮腺、舌下腺及颌下腺,小唾液腺多发生在腭腺和磨牙腺区,而原发于颌骨的黏液表皮样癌较少见。我院于2005-03-07收治1例,经病理切片证实为原发于右侧上颌骨黏液表皮样癌,现报告如下。     

Warthin样黏液表皮样癌、Warthin瘤合并黏液表皮样癌及伴黏液化生3例

Warthin样黏液表皮样癌是一种新近发现的涎腺黏液表皮样癌亚型,形态类似于Warthin瘤,但具有与黏液表皮样癌相似的t(11;19)(q21;p13)染色体易位.因此鉴别诊断非常重要.Warthin瘤合并黏液表皮样癌极为罕见.本文报告了1例Warthin样黏液表皮样癌、1例Warthin瘤合并黏液表皮样癌、1例Wa...     

黏液表皮样癌中β-连环素和细胞周期蛋白D1表达的相关性研究

目的检测黏液表皮样癌组织中β-连环素(catenin)和细胞周期蛋白(cyclin)D1的表达。方法采用免疫组化SP法检测30例黏液表皮样癌组织中β-catenin、cyclinD1的表达。结果β-catenin在正常涎腺组织中主要分布于涎腺导管上皮、腺泡上皮和肌上皮细胞。cyclinD1在正常涎腺组织中无表达。黏液表皮样癌组织β-catenin10例(33.3%)呈正常膜表达,20例(66.7%)β-catenin胞质和(或)胞核内异位表达;黏液表皮样癌组织中16例(53.3%)呈cyclinD1过度表达。β-catenin呈正常膜表达的10例中,2例(20.0%)呈现cyclinD1过度表达;而β-catenin呈异常表达的20例中,14例(70.0%)cyclinD1过度表达。黏液表皮样癌β-catenin的异常表达与cyclinD1的过度表达呈正相关性(P<0.05)。结论β-catenin的异常表达可能通过促使或激活cyclinD1的过度表达导致黏液表皮样癌的发生和发展。     

OPN及β-catenin在涎腺黏液表皮样癌中的表达及意义

目的：研究OPN及β-catenin在黏液表皮样癌中的表达,探讨其在黏液表皮样癌病变中的作用及其临床意义。方法：应用免疫组织化学S—P法检测35例黏液表皮样癌及12例正常涎腺组织中β-catenih及OPN的表达。结果：黏液表皮样癌中β-catenin和OPN的阳性表达率分别为37．1％（13／35）和65．7％（23／35）与正常对照组存在显著性差异（P〈0．05）。在黏液表皮样癌中它们的表达呈显著相关性（P=0．0001,R=-0．691）。β-catenin和OPN的阳性率在不同分化程度的黏液表皮样癌中存有差异（P〈0．05）,且与是否存在淋巴结转移有显著性关系（P〈0．05）。结论：β-catenin及OPN的表达与黏液表皮样癌的发生和发展关系密切,检测该指标有助于判断黏液表皮样癌的病理分级和淋巴结转移的关系。     

增殖细胞核抗原和Ki-67抗原在黏液表皮样癌中的表达

目的:检测细胞增殖核抗原(PCNA)和Ki-67抗原在黏液表皮样癌中的表达,探讨其表达量与粘液表皮样癌分级的相关性及意义。方法:对17例黏液表皮样癌的临床病理特点进行回顾性分析,采用SABC和LSAB免疫组化法分别检测PCNA和Ki-67在17例黏液表皮样癌的表达和分布。结果:17例黏液表皮样癌中,高分化型11例(其中1例转移)。低分化型6例(其中4例转移)。PCNA及Ki-67的增殖指数(PI值)在黏液表皮样癌中,低分化型明显高于高分化型(P<0.001)。在发生转移的黏液表皮样癌组中,PCNA及Ki-67的表达水平均明显高于无转移组。结论:黏液表皮样癌中PCNA和Ki-67的表达水平与细胞分化有关,其PI值可作为组织学分级的重要参数。PCNA和Ki-67的高表达预示着黏液表皮样癌预后的不良。     

组织蛋白酶D在涎腺黏液表皮样癌中的表达

目的探讨组织蛋白酶D(Cath-D)在涎腺黏液表皮样癌中表达的意义。方法采用苏木素-伊红染色方法筛选典型病例与免疫组织化学方法分析21例黏液表皮样癌中Cath-D的表达。结果 Cath-D在正常涎腺组织的基底膜、腺管部位有弱阳性表达,在黏液表皮样癌中有强阳性表达,其强弱程度与病理分级存在相关性(r=0.54,P<0.01)。染色强度与染色面积评分之和与病理分级存在相关性(r=0.66,P<0.01)。在肿瘤浸润前沿表达显著。结论在涎腺黏液表皮样癌中Cath-D表达强弱程度与病理分级密切联系,癌症浸润前沿表达情况可以为临床治疗提供参考。     

Iodine-125 brachytherapy for the treatment of central mucoepidermoid carcinoma of the jaw in a pre-teen

Central mucoepidermoid carcinoma (MEC) of the jaw is a rare malignant neoplasm, even rarer in teenagers. Radical surgical resection, such as en bloc resection or segmental resection, is the main treatment for MEC of the jaw. This surgical treatment results in a loss of integrity of the jaw. The successful application of iodine-125 brachytherapy for the treatment of intraosseous MEC of the mandible in an 11-year-old girl is reported here. No local recurrence or distant metastasis was observed during 6 years of follow-up. The integrity of the mandible was preserved and the development of the mandible was not significantly affected. Iodine-125 brachytherapy is a potential alternative treatment for central mucoepidermoid carcinoma of the jaw, especially in teenagers, and may preserve the continuity and function of the jaw.     

颌骨中心性黏液表皮样癌八例的临床病理分析

目的 分析研究8例少见的颌骨中心性黏液表皮样癌(central mucoepidermoid carcinoma of the jaws,CMCJ)临床病理表现,为更合理的治疗提供帮助.方法 对1989年5月至2008年8月间经病理确诊的8例CMCJ(男5例,女3例)的临床表现、影像学特征及组织病理改变进行分析.结果 CMCJ好发于中年,平均发病年龄43.3岁,发生于下颌骨7例,上颌骨1例,下颌骨者多见于磨牙及下颌角升支区.首诊症状多为颌骨肿胀、疼痛或感觉异常、牙齿松动及疼痛,影像学特征多表现为边界清晰或欠清晰的单房或多房放射透光区,光镜下所见与涎腺黏液表皮样癌相似.结论 CMCJ的诊断应基于对病史、临床检查、影像学特征及组织病理学特点的综合分析,特别应注意与一些颌骨囊肿和肿瘤的鉴别.主要治疗方式为原发灶扩大切除术,选择性地结合区域淋巴结清扫以及放化疗可提高治疗效果.     

Central mucoepidermoid carcinoma of the mandible: report of four cases with long-term follow-up

Central mucoepidermoid carcinomas are uncommon tumours, representing about 2 to 4% of all mucoepidermoid carcinomas. They are histologically low-grade cancers, usually affecting the mandible as uni- or multilocular radiographic lesions. The authors report four cases of central mucoepidermoid carcinomas affecting the mandible and discuss their clinical, radiographic and histological findings. Four females were affected, with a mean age of 42 years and all cases involved the posterior mandible. Treatment included surgery in three cases and surgery associated to neck dissection and radiotherapy in one case. Two patients showed no recurrence and were alive without signs of the disease after a mean follow-up of 78 months. The other two patients showed local recurrence and one was alive with disease after a follow-up of 384 months, and the other was followed-up for 324 months dying by other causes without signs of the tumour. Central mucoepidermoid carcinomas of the mandible are low-grade tumours, and effective surgical treatment involving wide local excision or en bloc resection allows patients to have a favourable prognosis after long-term follow-up.     

Mucoepidermoid carcinoma in the mandible: Findings of panoramic radiography and computed tomography

Six patients with mucoepidermoid carcinoma in the mandible were studied with both panoramic radiography and computed tomography. Lesion shape and margin were evaluated on panoramic radiography, and bony expansion and cortical plate destruction were evaluated on computed tomography. In addition, a possible correlation among radiographic findings, histologic findings, and prognosis was investigated. Lesions found on panoramic radiography were classified into three types; each type pertained to two of the six patients. The lesion types were as follows: cystic, characterized by a large, cystic radiolucent area; rarefying, characterized by rarefying changes of the trabeculae; and infiltrative, characterized by a central ill-defined area of bony destruction. The results show that computed tomography is useful in the identification of tumor extent, bony expansion, and cortical plate destruction resulting from tumors. None of the patients whose lesions were of the cystic or rarefying type showed evidence of disease after surgery. In contrast, both of the patients whose lesions were of the infiltrative type died of their tumors. Histologic findings of the cystic and rarefying types showed tumors that were well-differentiated or moderately well-differentiated, whereas findings of the infiltrative type showed poorly differentiated tumors. Radiographic findings correlated with histologic findings and prognosis of mucoepidermoid carcinoma in the mandible in this limited series.     

Aggressive growth and neoplastic potential of dentigerous cysts: With particular reference to central mucoepidermoid carcinoma

Epidermoid carcinoma and mucoepidermoid carcinoma that arise centrally within the jaws are often associated with dental cysts. Central mucoepidermoid carcinoma of the jaws is rare, and usually presents in the fourth to eighth decades; we know of only 7 cases that have been described in children younger than 16. Here we describe a central mucoepidermoid carcinoma in an 8-year-old girl that arose from a dentigerous cyst associated with an unerupted mandibular molar.     

Aggressive growth and neoplastic potential of dentigerous cysts with particular reference to central mucoepidermoid carcinoma

Epidermoid carcinoma and mucoepidermoid carcinoma that arise centrally within the jaws are often associated with dental cysts. Central mucoepidermoid carcinoma of the jaws is rare, and usually presents in the fourth to eighth decades; we know of only 7 cases that have been described in children younger than 16. Here we describe a central mucoepidermoid carcinoma in an 8-year-old girl that arose from a dentigerous cyst associated with an unerupted mandibular molar.     

Cystadenoma of the mandible: a rare presentation

To our knowledge this is only the second reported case of a cystadenoma that arose in the mandible. These are rare benign epithelial neoplasms of the salivary gland that comprise 0.8%-6.3% of all minor tumours of the salivary gland. Because cystadenoma of the mandible is so rare, there is little evidence or guidance about management, and enucleation remains the recommended treatment. Careful histological diagnosis is important for differentiation from other morphologically similar salivary gland tumours such as a mucoepidermoid carcinoma.     

Sclerosing mucoepidermoid carcinoma of the parotid

Two cases of mucoepidermoid carcinoma of the parotid gland associated with extensive central sclerosis and peripheral lymphoid response are reported. This unusual but distinctive variant of mucoepidermoid carcinoma can be difficult to recognize and may be confused with chronic sialoadenitis or even metastasis to an intraparotid lymph node.     

Recurrence of cystic central mucoepidermoid tumor of the mandible. Report of a case with 3 recurrences in 7 years

A case of a cystic central mucoepidermoid tumor of the mandible is presented. The radiographic and histopathologic manifestations of the lesion bear some resemblance to the odontogenic cyst. Conservative treatment by simple enucleation resulted in 3 recurrences in a 7-year period. En block resection of such lesions is recommended.     

Nasolabial flap reconstruction of floor of mouth

We treated two patients requiring nasolabial flap reconstruction. The first patient was a 75-year-old man with mucoepidermoid carcinoma in the left-side floor of the mouth; requiring resection of the floor of the mouth, partial mandibulectomy, and left supraomohyoid neck dissection. The second patient was a 74-year-old man with recurrent acinic cell carcinoma in the anterior oral floor infiltrating as far as the mandible. This patient required wide excision of the anterior part of the oral cavity, including amputation of the mandible. After tumor resection, both cases had a nasolabial flap reconstruction. The postoperative course of both cases was good; neither postoperative flap necrosis nor infection developed.