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排序方式: 共有474条查询结果,搜索用时 15 毫秒
1.
小儿纵隔肠源性囊肿影像学表现及分析 总被引:3,自引:0,他引:3
目的 分析小儿纵隔肠源性囊肿及其并发症的影像学表现及诊断。资料与方法 回顾性分析经手术病理证实的8例小儿纵隔肠源性、神经肠源性囊肿及其并发畸形、感染及出血时的影像学表现。结果 小儿纵隔肠源性囊肿多位于中后纵隔,呈圆形或椭圆形,密度均匀,边缘清楚。较大时可占据一侧胸腔的大部分。并发感染时囊肿壁模糊,囊内密度增高;囊肿穿孔后可与支气管相通,引起吸入性肺炎及咯血。神经肠源性囊肿均存在脊椎畸形。25%病例同时存在腹部肠重复畸形。结论 小儿纵隔肠源性囊肿少见,除囊肿本身的特点以外,还须注意其他伴发征象,诊断应依靠临床和综合影像学分析。 相似文献
2.
Takehiko Shimoyama Katsuo Yoshiya Yasushi Yamato Teruaki Koike Keiichi Honma 《General thoracic and cardiovascular surgery》2009,57(6):310-314
Malignant peripheral nerve sheath tumors (MPNSTs; malignant schwannomas) rarely occur in the anterior mediastinum, and their
prognosis is poor. A 75-year-old man was referred to our hospital for examination of an anterior mediastinal tumor. A computed
tomography-guided percutaneous needle biopsy revealed only fibrosis. The tumor was completely excised via a median sternotomy
with partial resection of the pericardium and right upper lobe of the lung. Thereafter, the tumor was diagnosed as a storiform-pleomorphic
type of malignant fibrous histiocytoma. At 1 year after the surgery, a distant metastasis was found in the interlobular space
between the right middle and lower lobes. The tumor was completely excised via a right posterolateral thoracotomy. Reexamination
of the primary and secondary tumors revealed an MPNST. No recurrence was found up to 5 years after the second surgery without
adjuvant chemotherapy or radiation therapy. However, he died from multiple lung metastases after 6 years. 相似文献
3.
C. R. Thambi Dorai V. Muthu Alhagi Ng Chee Eng Z. Ismail A. Yakub 《Pediatric surgery international》1998,14(1-2):84-85
A neonate with severe respiratory distress due to a benign mediastinal teratoma (MT) is reported. Despite early and easy
surgical excision of the tumor, the child died due to poor cardiac function. Only ten cases of MT in neonates have been reported
in the literature so far. While the tumor has been known to interfere with lung development in utero, postnatal myocardial
dysfunction due to poor heart development has not been previously documented.
Accepted: 22 September 1997 相似文献
4.
W. J. Hofmann Herwart F. Otto W. Wöckel O. Thetter 《Virchows Archiv : an international journal of pathology》1995,425(6):641-646
A melanotic paraganglioma occurred in a 57-year-old woman, located in the left paravertebral space of the upper mediastinum. It was totally resected. During a 5 year follow up period neither tumour reccurrence nor metastasis were observed. Histological examination of the tumour revealed a paraganglioma with monomorphous chief cell like elements which were arranged in a zellballen pattern. Immunohistochemical results also were in accordance with the diagnosis since neuron-specific enolase, chromogranin and synaptophysin were found in tumour cells whereas keratin was not. Additionally, neurosecretory granules were found in tumour cells during electron microscopy. A peculiar feature of the tumour was its strong pigmentation due to melanin located within the tumour cells and tumour associated melanophages. The simultaneous expression of functional properties of two different neural crest derived cells in one tumour stresses the close relationship between all neural crest elements and is in accordance with the observation of other melanotic, non-melanomatous tumours.Dedicated to Prof. Dr. Dr. mult. h.c. W. Doerr on the occasion of his 80th birthday 相似文献
5.
Kenji Kawaguchi Shuji Kishida Riki Okeda Nobuaki Funata Morio Koike 《Pathology international》1988,38(3):351-359
An unusual case of encephalomyeloneuritis associated with germ cell tumor with mature and immature teratoma arising in the mediastinum is presented. There was an unusually long interval from the onset of neurologic symptoms to the development of malignancy. The histopathology, characterized by limbic encephalitis, brain stem encephalitis, cortical cerebellar degeneration and myeloneuritis, was similar to that of paraneoplastic encephalomyeloneuritis previously described in the literature. Virological and immunological studies failed to demonstrate any causative agents or autoantibodies reacting with brain tissue. The causal relationship between the malignant neoplasm and encephalomyeloneuritis thus seems to be very complex. 相似文献
6.
This review presents the options and limitations of MRI in non-vascular diseases of the mediastinum and the chest wall. In
numerous thoracic pathologies, MRI is a useful supplement to spiral CT. This imaging procedure also allows a contrast-media-free
differentiation of solid tumors and vascular lesions (e. g., aortic aneurysms). The advantages of MRI over CT are particularly
useful when multiplanar tumor imaging is required prior to surgery to establish the exact spatial relationship between tumor
and the other mediastinal structures. Primary indications for MRI in diseases of the mediastinum and chest wall are therefore:
(a) tumors of the posterior mediastinum for determining their position in relation to the neural foramina and the spinal canal;
(b) chest wall tumors; (c) preoperative multiplanar imaging of primary mediastinal tumors; and (d) contraindications against
CT exams with iodine contrast media. 相似文献
7.
Mediastinal lymphangioma in adults: CT and MR imaging features 总被引:1,自引:0,他引:1
Charruau L Parrens M Jougon J Montaudon M Blachère H Latrabe V Laurent F 《European radiology》2000,10(8):1310-1314
Adult mediastinal lymphangiomas are rare lesions the diagnosis of which is difficult based on imaging studies. A retrospective
study of CT, MR, and pathologic findings of mediastinal lymphangioma was performed in order to correlate pathological and
imaging findings. Nine cases of adult lymphangiomas were identified in the records of our institution over a 12-year period.
The CT, MR, and pathologic findings were reviewed. Lesions were classified pathologically as unilocular, cavernous, and intermediate
types. Pathologic examination identified six cases of unilocular lesion, two cases of cavernous type, and one intermediate
type. The CT features (n = 9) included a smoothly marginated non-enhancing mass of water attenuation (n = 7), a non-enhancing mass of soft tissue attenuation (n = 1), and an enhancing multiseptated mass (n = 1). Lesions were located in the anterior mediastinum (n = 2), right paratracheal (n = 4), subcarinal (n = 1), aortopulmonic window (n = 1) areas, and below the left hilum extending into the posterior mediastinum (n = 1). The MR features (n = 3) were characterized by an enhancing multicystic and multiseptated appearance, evocative of a cavernous type in two cases.
The CT appearance of mediastinal thoracic lymphangioma is variable depending on the pathologic type. The most common unilocular
type is a non-enhancing thin-walled mass on CT. A less frequent cavernous type can be suggested based on a multiseptated and
loculated mass on CT and/or MR examination.
Received: 21 June 1999; Revised: 30 September 1999; Accepted: 23 February 2000 相似文献
8.
Jin Wang Park Won Gi Jeong Jong Eun Lee Hyo-jae Lee So Yeon Ki Byung Chan Lee Hyoung Ook Kim Seul Kee Kim Suk Hee Heo Hyo Soon Lim Sang Soo Shin Woong Yoon Yong Yeon Jeong Yun-Hyeon Kim 《Korean journal of radiology》2021,22(1):139
Magnetic resonance imaging (MRI) has become a crucial tool for evaluating mediastinal masses considering that several lesions that appear indeterminate on computed tomography and radiography can be differentiated on MRI. Using a three-compartment model to localize the mass and employing a basic knowledge of MRI, radiologists can easily diagnose mediastinal masses. Here, we review the use of MRI in evaluating mediastinal masses and present the images of various mediastinal masses categorized using the International Thymic Malignancy Interest Group''s three-compartment classification system. These masses include thymic hyperplasia, thymic cyst, pericardial cyst, thymoma, mediastinal hemangioma, lymphoma, mature teratoma, bronchogenic cyst, esophageal duplication cyst, mediastinal thyroid carcinoma originating from ectopic thyroid tissue, mediastinal liposarcoma, mediastinal pancreatic pseudocyst, neurogenic tumor, meningocele, and plasmacytoma. 相似文献
9.
10.