肺粘液表皮样癌的CT影像表现

目的 探讨肺粘液表皮样癌的CT影像表现.方法 回顾分析经手术病理证实的5例肺粘液表皮样癌患者的影像资料,5例患者均行CT平扫及增强扫描.结果 5例CT均表现为支气管内边缘光滑、边界清楚的类圆形或分叶状肿块,沿支气管生长,1例位于中间干支气管,1例位于叶支气管,3例位于段支气管,直径1～4cm.2例伴阻塞性肺不张,3例伴阻塞性肺炎.1例病变内见小斑片状钙化灶,其余4例病灶密度均匀,增强扫描轻度强化.只有1例有纵隔及同侧肺门淋巴结肿大.结论 肺粘液表皮样癌是位于支气管内的少见肿瘤,CT上表现为支气管内类圆形或分叶状肿块,伴有阻塞性炎症或肺不张,肿块密度均匀,增强扫描轻度强化.     

支气管粘液表皮样癌X线与CT诊断(附1例报告及文献复习)

目的：探讨支气管粘液表皮样癌X线与CT诊断，提高诊断水平。方法：搜集1例证实为支气管粘液表皮样癌的病例，复习了近几年国内外支气管粘液表皮样癌的表现。结果：支气管粘液表皮样癌的胸片表现为气管内或支气管内结节或孤立的肺内结节或肿块，有的伴有阻塞性肺炎或肺不张。CT为卵圆形或分叶状肿块，可见斑片状钙化，可伴阻塞性肺炎、肺气肿或肺不张，注射对比剂后肿块轻度强化。结论：支气管粘液表皮样癌的CT表现，结合临床资料可以诊断。     

支气管粘液表皮样癌的临床特征及CT诊断

目的 探讨支气管粘液表皮样癌(mucoepidermoid carcinoma,MEC)临床特征及CT影像特点,以提高对本病的认识能力.方法 经手术和病理证实的支气管粘液表皮样癌6例,回顾分析其临床特征和CT影像特点.结果 6例均为低度恶性型,其中病灶位于主支气管2例,为边界清楚的腔内外椭圆形结节,叶支气管3例,为边缘不规则的腔内外生长的类圆形肿块,段支气管1例,为边缘光整的腔内外生长的类圆形肿块.2例瘤内有钙化,3例不均匀轻度强化,2例纵隔及肺门有肿大淋巴结,病理证实为癌转移.6例均有不同程度气道阻塞性改变.结论 低度恶性型支气管MEC在CT上表现为边缘光整或不规则的支气管腔内或腔内外结节或肿块,可有钙化,轻度不均匀强化.     

肺黏液表皮样癌的CT表现

目的 探讨肺黏液表皮样癌的CT表现及其诊断价值.资料与方法 搜集10例经手术及病理证实为肺黏液表皮样癌患者资料,分析其CT表现,并回顾近年国内外相关文献.结果 肺黏液表皮样癌表现为气管、支气管内或肺内孤立性结节、肿块,呈卵圆形或分叶状,可伴有阻塞性肺炎或肺不张,部分可见点、片状钙化,注射对比剂后肿块呈中度强化.结论 肺黏液表皮样癌的CT表现具有一定特征性,结合临床资料,能为该病诊断提供帮助.     

支气管黏液表皮样癌CT表现

目的 探讨原发性支气管黏液表皮样癌(MEC)的多层螺旋CT(MDCT)表现,提高对该病的认识.方法 回顾性分析经病理学证实的10例支气管MEC的临床资料和MDCT表现,其中8例行CT增强扫描.结果 中心型8例,6例(6/10例)起源于叶支气管,2例(2/10例)起源于段支气管,其中:1例(1/10例)表现为支气管腔内结节状占位,7例(7/10例)表现为向支气管腔内外浸润性生长,呈块状,增强扫描呈不均匀强化;周围型2例,呈块状,密度均匀,边缘清晰,其中1例边缘呈浅分叶状,增强扫描强化不明显.结论 支气管MEC多层螺旋CT表现多样,对于年轻患者的中心型支气管MEC多层螺旋CT较易诊断.     

原发肺黏液表皮样癌CT 诊断（附14例报告）

【摘要】目的：探讨原发肺黏液表皮样癌（PPMEC）CT表现。方法：分析经组织病理学确诊14例PPMEC CT表现并结合文献进行分析。结果：14例患者CT表现部位：中央型13例,外周型1例。大小及形态：病灶直径1～7cm,12例病灶长径沿支气管走形。密度,强化及内部特征：平扫病灶呈不均匀低密度,5例内伴点状钙化,增强后轻中度强化,CT值增加范围约13~36HU。病灶周围特征：5例位于段支气管内沿支气管生长,伴远端阻塞性炎症、不张及黏液栓。4例出现淋巴结及远处转移。结论：PPMEC临床表现无特异性但CT征像具有一定特点:多位于叶或段支气管腔,平扫密度不均匀低,增强轻-中度强化,其长径沿支气管走形,常伴气道阻塞表现。     

肺肉瘤样癌的CT 诊断及误诊分析

目的：探讨肺肉瘤样癌的C T表现特征。方法回顾性分析14例经病理证实肺肉瘤样癌C T 资料,并与病理结果进行对照分析。结果14例中12例为单发,2例为多发,中央型4例,周围型10例,病变平扫呈软组织密度,12例呈不均匀强化,内部有囊变坏死区,10例患侧胸膜肥厚,免疫组织化学14例均表达CK （＋）,Vim （＋）。结论肺肉瘤样癌CT表现具有一定特征性,CT检查有助于肺肉瘤样癌的定位定性及明确肿瘤与周围组织结构的关系,为手术方案提供可靠的影像学依据。免疫组织化学CK和Vim对肺肉瘤样癌的诊断有决定性作用。     

肾肉瘤样癌2例

例1男,72岁。间歇性左上腹疼痛10年。查体:左肾区扪及肿块,活动轻压痛。CT平扫示左肾体积增大,中下部见密度不均影,最大径约9cm,内见多发囊性低密度区,CT值为27～46HU(图1a)。增强扫描病灶呈明显分隔状一过性强化,囊壁三期CT值约为86HU、113HU、53HU,囊变区内三期未强化(图1b,1c),CT值约为30HU。左肾门区见一个约1.9cm×1.3cm的淋巴结,增强后中等强化。左肾静脉内见充盈缺损影。左肾盂扩张积水,左肾周见模糊条片影。CT诊断:左侧肾癌;左肾门区淋巴结转移可能性大,左肾静脉瘤栓形成。     

肺肉瘤样癌的CT表现

目的分析7例经病理证实的肺肉瘤样癌(PSC)的CT表现与临床资料,以提高对该病的认识。方法回顾性分析7例PSC的CT表现,所有病例均行CT平扫及增强扫描,分析病灶发生的部位、形态、强化形式与周围侵犯及转移等。结果 7例PSC均为单发,左肺4例,右肺3例;6例为周围型,1例为中央型。病灶平扫为软组织密度,其中6例密度不均匀,可见片状低密度坏死区;增强扫描5例呈厚环状强化,1例呈片絮状强化,1例病灶较小呈轻度均匀强化。所有病例免疫组织化学见CK(+)与Vim(+)。结论 PSC CT表现有一定的特点,周围型常表现为较大的肿块,易侵犯胸壁,增强扫描多呈厚环状强化,病灶常可见片状低密度坏死区,确诊需依靠病理学检查。     

Relapsing high grade mucoepidermoid carcinoma

Background and purpose

The treatment strategy for inoperable recurrent mucoepidermoid carcinoma (MEC) is not well established. Here, we present a case of a relapsed high grade MEC of the salivary glands of the hard palate that was successfully treated with a reirradiation (re-RT) and cetuximab, an antibody against epidermal growth factor receptor (EGFR).

Case report

Twelve years after resection and adjuvant radiotherapy for high grade MEC of the salivary glands, a patient presented with inoperable recurrent disease. She received another 59.4?Gy. In addition, 400?mg/m² cetuximab was administered in the first week, followed by six additional weekly courses at 250?mg/m².

Results

Treatment was well tolerated. The patient is doing well and continuous radiological complete response (CR) is documented for 25?months after completion of the combined treatment.

Conclusion

Combined re-RT and targeted inhibition of EGFR with cetuximab may be a valuable therapeutic strategy in patients with recurrent localized high grade MEC who are not candidates for radical surgery.     

A case of radiation-induced mucoepidermoid carcinoma of the lung following radiotherapy for pulmonary metastasis of Wilms' tumor

Radiotherapy is one of the main therapeutic methods for malignant tumors, but on the other hand it can also induce new malignant tumors. Recently, we experienced a case of a 22-year-old woman with triple cancers (Wilms' tumor, thyroid cancer and mucoepidermoid carcinoma of the lung). She had been treated repeatedly for right-sided pulmonary metastases from the Wilms' tumor. The last cancer arose from a different organ in the field irradiated to treat the first cancer, after a latent period of about 20 years. Therefore, this case is classified as highly probable radiation-induced cancer (A-1 group) by the diagnostic criteria for radiation-induced cancer proposed by Sakai et al. Second cancers (radiation-induced cancers) mainly consist of soft tissue sarcomas, leukemias, skin cancers, urinary bladder cancers, large bowel cancers and other tumors. The occurrence of mucoepidermoid carcinoma of the lung as a radiation-induced tumor had not been reported. This patient also showed poor growth of the right breast and marked deformity of the right side of the thorax as late damage from irradiation. We must make efforts to decrease late damage from radiotherapy for pediatric cancers.     

外生型肝癌2例

.972. [3]刘传玺,李吉昌.临床超声影像诊断学[M].济南:济南出版社,1993.209.为了提高急性阑尾炎的超声诊断,现总结应用超声显像观察了60例急性阑尾炎患者,就急性阑尾炎的声像图表现及诊断价值作初步分析。1材料与方法本组60例患者中,男42例,女18例,年龄8~68岁。全部经超声检     

原发性气管、支气管黏液表皮样癌的CT表现

目的 探讨原发性气管、支气管黏液表皮样癌的特征性CT表现.方法 回顾性分析经病理证实的10例气管、支气管黏液表皮样癌的CT特征、临床表现及对应病理资料.结果 (1)部位:位于气管1例、主支气管1例、叶支气管3例、段支气管5例,均呈中央型.(2)形态及大小:分叶状2例、椭圆形或圆形7例、不规则形1例.肿瘤最长径10~39 mm(平均25 mm).(3)边缘:8例边缘光滑,2例边缘毛糙,邻近肺实质存在浸润.(4)密度:其中6例密度不均匀,3例密度均匀.4例密度高于胸壁肌肉,4例与胸壁肌肉相仿,1例低于胸壁肌肉.4例肿瘤内见钙化.(5)强化特点:9例行CT增强扫描中8例呈相对轻度强化,1例轻微强化.(6)周围情况:所有病例均显示气管或支气管狭窄、阻塞,5例伴阻塞性肺炎,2例伴阻塞性肺不张,3例伴远端支气管阻塞性黏液栓塞,1例伴阻塞性肺气肿,纵隔或肺门淋巴结均未见明显肿大,1例合并左肺多发肺大疱及左侧气胸.结论 原发性气管、支气管黏液表皮样癌多为中央型、低度恶性肿瘤.CT表现为气管、支气管腔内或远端边缘光滑的椭圆形或分叶状肿物,常伴钙化,少数可呈浸润性生长,增强后呈轻度强化.     

Extranodal nasal NK/T cell lymphoma with bronchial mucoepidermoid carcinoma and lung adenocarcinoma: a case report

Extranodal nasal NK/Tcell lymphoma (ENKTCL) is a relatively rare type of non-Hodgkin''s lymphoma. It is highly malignant, highly invasive, and easy to relapse. Most patients have a poor prognosis. We report a 48-year-old woman who presented with irritant dry cough that had persisted for 6 m. CT showed a mass in the right nasal cavity, with uneven density similar to soft tissue, with slight uneven enhancement. The mass and the upper, middle, and lower turbinates were not clearly demarcated, involving multiple adjacent sinus cavities, and the local bone showed osteolytic destruction; MRI showed isosignal on T1WI and slightly hypersignal on T2WI and DWI. In addition, there was a mass of soft tissue density at the bronchial opening in the right middle lobe, showing uneven and obvious enhancement; a cavity was seen in the nodule of the right lower lobe, and the adjacent pleura was stretched, showing moderate enhancement. The nasal mass was diagnosed as extranodal NK/T cell lymphoma, the right middle lobe mass was diagnosed as mucoepidermoid carcinoma, and the right lower lobe mass was diagnosed as lung adenocarcinoma. ENKTCL rarely invades the lungs. If a patient has a lung occupying lesion similar to it, biopsy confirmation should be considered to avoid misdiagnosis as a chest metastasis that affects the treatment effect.