囊瘤

Results: 4 cases were geminoma, 3 cases were teratoma, 1 case was choriocarcinoma, 4 cases were glioma, 2 cases were meningiomas, pineoblstoma, neuroblastoma, dermoid cyst and arachnoid cyst each had one case. It maybe very difficult if we diagnosed only through MR signals. Due to the multitude origin of histology, we can diagnose through some special signals, such as adipose, cystic degeneration, hemorrhage and implant dissemination. We can also combined with clinical examination which is help to differential diagnosis.

结果：生殖细胞瘤4例，畸胎瘤3例，1例绒毛膜癌，胶质瘤4例，脑膜瘤2例，松果体母细胞瘤、神经母细胞瘤、皮样囊肿及蛛网膜囊肿各1例，仅通过MR信号较难诊断，由于肿瘤组织学来源多，可通过一些特殊信号如脂肪、囊变、出血、种植播散等，并结合临床检查来进行鉴别诊断。

Results Of total 8 cases, 4 eases were located in the side of cerebral falx or sinus,2 eases in the convexity of the brain,1 ease in the sphenoidal erest,1 ease in the tentoriam of cerebellum the main findings were as followes: 4 eases were cystic tumores with obvious enhancement in the substant parts; 2 eases were shown as eystoma with the wall knot enhanced obviously; cystic tumores were found in 2 eases with the wreath form enhance; peritumoral edemaarea in 2 ease, hyperostosis were seen in 3 eases.

结果 本组8例囊性脑膜瘤均为良性，肿瘤位于镰旁／窦旁4例，大脑凸面2例，蝶骨嵴1例，小脑幕1例。其主要CT表现有：囊实性肿块，实质部分强化明显，4例；有壁结节的囊性病变，增强时壁结节强化明显，2例；环形强化的囊性肿块2例；瘤周伴水样低密度区2例，邻近骨质增生硬化3例。

Multilocular cystadenomas have the typical MRI manifestations and MRI is valuable, whereas unilocular cystadenomas, having similar MRI findings with some other benign cystic lesion, are lack of enough features in MRI. However, thick irregular wall or septa in MRI might be helpful in differential diagnosis.

多房性囊腺瘤具有较典型的MRI表现，诊断不难；单房性囊腺瘤缺乏特异表现，囊壁强化是与其他囊性病变鉴别诊断的重要徵象，MRI检查对诊断有重要作用。

Methods CT appearances of 10 cases with cystadenoma and cystadenocarcinoma of the pancreas confirmed by clinic and pathology were retrospectively analyzed.

e#［摘要］目的：探讨胰腺囊腺瘤与囊腺癌的CT表现。方法：回顾性分析经手术及病理证实的10例胰腺囊腺瘤与囊腺癌的CT表现，总结其特征性表现。

Results In 316 patients including 97 cases of type Ⅰ(97 cases account for 30.7%) and 71 cases of type Ⅳ(71 cases account for 22.5%) by ultrasound;74 cases of Serous cystadenoma(74 cases account for 23.4%),58 cases of mucinous cystadenoma(58 cases account for 18.4%) and 56 cases of dermoid tumor56 c...

结果本组316例患者中卵巢肿瘤超声分型以Ⅰ型居多(97例，占30.7%)，其次为Ⅳ型(71例，占22.5%)；病理分型以浆液性囊腺瘤居多(74例，占23.4%)，其次为黏液性囊腺瘤(58例，占18.4)和畸胎瘤(56例，占17.7%)。

The attenuation values at unenhanced and enhanced CT of the tumor were also recorded. Results The 32 cases adrenal neoplasms included 9 cases with aldosterone-producing adenoma, 5 hydrocortisone-producing adenomas, 1non-functional adenoma, 5 cortical hyperplasies,4 pheochromocytomas,2 adenocarcinomas, 3 metastases, 1 fibroneuroma, 1 ganglioneuroma and 1 myelolipomas. Conclusion The characteristics on CT images are associated with the pathological feature in adrenal neoplasms.

结果 醛固酮腺瘤9例，体积较小且密度低，增强后轻度增强；皮质醇腺瘤5例，瘤体较大，边界清，密度略低于正常肾上腺组织；无功腺瘤1例；结节增生5例，为等或稍低密度影，增强后强化较明显；嗜铬细胞瘤4例，体积较大，密度不均，可见多个囊变坏死区；皮质腺癌2例，肿块形态不规则，边缘模糊，密度不均匀，易发生大片坏死及点状钙化；转移瘤3例；神经纤维瘤、神经节瘤及髓性脂肪瘤各1例。

MR may obviously demonstrate the entire image if hepatobiliary cystadenoma, the mural nodus form and corpora mammillaria solid lesions suggest canceration. Conventional MR sequences combine with dynamic enhancement and MRCP possese fairly diagnostic value to hepatobiliaty cystadenoma.

MR能明确显示肝内胆管囊腺瘤的整体影像的特征性表现，若囊壁上有结节或乳头状肿块提示局部有癌变，MR常规扫描结合动态增强及MRCP成像对肝内胆管囊腺瘤具有很高的诊断价值。

Seen mainly in the ovary, occasionally in the thyroid gland and pancreas, ovarian cystadenoma, there are two types: one is mucinous, often Multilocular, wall smooth, rarely papillary hyperplasia.

主要见于卵巢，偶见于甲状腺及胰腺，卵巢囊腺瘤有两种类型：一种是粘液性囊腺瘤，常为多房性，囊壁光滑，少有乳头状增生。

Results: Although most cases (11/16) were typical and clearly classified on MRI, atypical cases were also observed, such as meningioma of long T1/T2 signal intensity with small cystic foci, and neurinoma of iso intensity and homogenous enhancement without cystic change or enlargement of internal acoustic meatus.

结果：尽管多数神经鞘瘤(5/8)和脑膜瘤(6/8)具有典型的MRI表现特征并仅经MRI即可得到正确鉴别，但部分病例(5/16)为不典型表现者，如脑膜瘤呈长T1长T2信号并伴有囊变，以及神经鞘瘤呈等信号、均匀强化且不伴有囊变或内听道扩大者，鉴别诊断困难。

According to the composition of adenoma or morphological characteristics can be divided into cystadenoma adenoma, fibroadenoma, pleomorphic adenoma and polypoid adenoma type.

根据腺瘤的组成成分或形态特点，可将腺瘤分为囊腺瘤、纤维腺瘤、多形性腺瘤和息肉状腺瘤等类型。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。