Primary seminoma of the retroperitoneum

A rare case of primary seminoma in the retroperitoneum is described. Ultrasound detected a huge hypoechoic mass and correlative computed tomography showed a midline, homogeneous, lobulated mass in a man who presented for anuria. Received: 1 April 1999; Revised: 28 June 1999; Accepted: 27 July 1999     

Graft-dependent recurrence of hyperparathyroidism: imaging with frequency amplitude and encoded Doppler sonography

A 48-year-old woman underwent total parathyroidectomy with autotransplantation into the left forearm due to secondary hyperparathyroidism. Recurrence of hyperparathyroidism was observed 5 years later. B-mode high-resolution ultrasonography of the left forearm demonstrated an ill-defined hypoechoic lesion. Frequency- and amplitude-encoded Doppler sonography revealed marked hypervascularity, which was diagnostic for graft hyperplasia in association with the history of the patient. These findings were confirmed by scintigraphy and histological examination of the excised graft. Received: 22 November 1999; Revised: 8 February 1999; Accepted: 9 February 1999     

Sarcomatoid chordoma: chordoma with a massive malignant spindle-cell component

We report a case of chordoma containing a spindle cell sarcomatoid component with a gradual transition from conventional chordoma. Immunohistochemically, many tumor cells in both conventional chordoma and sarcomatoid components were positive for cytokeratins (AE1/AE3, CAM5.2) and epithelial membrane antigen as well as vimentin. This report provides a rare example of sarcomatoid chordoma. Familiarity with this type of bone tumor should help to avoid confusion with dedifferentiated chordoma and other spindle cell sarcomas or carcinomas. Received: 25 February 2000 Revision requested: 28 March 2000 Revision received: 30 May 2000 Accepted: 28 June 2000     

Multimodality imaging assessment of meniscal ossicle

A case of meniscal ossicles occurring in the left knee of a 23-year-old woman is presented. Radiographs showed two calcified lesions at the posteromedial aspect of the knee which were interpreted as loose bodies. Sonography, computed tomography arthrography and magnetic resonance imaging showed the fragments within the posterior horn of the medial meniscus permitting a diagnosis of meniscal ossicles. These techniques can detect meniscal ossicles and exclude intra-articular loose bodies. Received: 7 February 2000 Revision requested: 14 March 2000 Revision received: 18 April 2000 Accepted: 24 April 2000     

Aberrant cervical thymus in an infant: an unusual cause of stridor

We report an 8-month-old infant presenting with stridor caused by a nonpalpable neck mass discovered at imaging and surgery. The diagnosis of aberrant thymic tissue was confirmed at histopathology. The authors reviewed the literature and discuss the embryology, imaging findings and differential diagnosis of this rare disorder. Received: 1 July 1999; Revised: 3 September 1999; Accepted: 6 September 1999     

临床超声技术在腹部淋巴结病变检查治疗中的应用

目的　研究分析腹部淋巴结主要病变的超声声像图特征及超声引导活检的临床应用价值。方法　对腹部淋巴结病变进行超声检查和超声引导活检。结果　超声检查可准确显示腹部淋巴结病变的数目、大小、形态、部位及其内部结构 ,能提示与周围组织的关系 ,从而作出诊断与鉴别诊断 ;超声引导能成功进行穿刺活检。结论　超声检查和超声引导活检是诊断腹部淋巴结病变的一种简便、快捷 ,准确、实用的检查手段 ,对明确临床诊断 ,指导临床治疗和观察病变进展与临床疗效 ,均具有良好的应用价值。     

东北大学10年间消化性溃疡的临床流行病学特点——附124例胃镜结果分析

目的了解本校溃疡发病特点。方法对东北大学医院1993~2002年10年间经胃镜检查诊断为消化性溃疡的病例进行了统计分析。结果共检出124例溃疡,其中十二指肠球部溃疡93例,胃溃疡26例,复合性溃疡5例;溃疡患者男女之比为3·771;溃疡患者平均年龄45·29岁,十二指肠球部溃疡以30岁以下居多,胃溃疡以50岁以上居多,复合性溃疡以30岁左右居多。结论病变好发部位以十二脂肠球部溃疡最多见,胃溃疡次之,复合性溃疡最少;溃疡发病男性明显高于女性,与不良嗜好、精神因素有关。     

Ultrasound evaluation of the multifetal gestation

With the increasing incidence of multifetal gestations, it is essential for the clinician to appreciate the benefit of ultrasound evaluation in these pregnancies. Multifetal gestation pregnancies are at increased risk for a range of both antepartum and intrapartum complications, such as intrauterine growth restriction, premature delivery, congenital anomalies, cord accidents, malpresentations, placenta previa, and abruptio placentae. First-trimester ultrasonic evaluation, amniotic fluid assessment, monitoring of fetal growth, diagnosing the twin-to-twin transfusion syndrome, and assessment of fetal anomalies will be reviewed. An early and accurate assessment of amnionicity and chorionicity are paramount in these gestations. The impact of chorionicity, in particular, can have profound consequences in the management of multifetal gestations. The determination of chorionicity onultrasonic evaluation in a multifetal gestations. The determination of chorionicity on ultrasonic evaluation in a multifetal pregnancy should be determined in a systematic way between 10-14 weeks' gestation. The amniotic fluid volume should be routinely assessed when performing an ultrasonic evaluation in a multifetal pregnancy. Amniotic fluid changes may serve as the only useful indicator to a potential pathological condition. In addition, evaluation of fetal growth in twins is essential, because these pregnancies are at increased risk for growth restriction and increased perinatal mortality rates compared to singletons. Finally, a careful anatomical evaluation in mulitifetal gestation is important because twin pregnancies have higher rates of anomalies than their singleton counterparts.