Aggressive fibromatosis of the leg and sacrococcygeal region: a report of two cases

Aggressive fibromatosis is a rare soft tissue tumor that composes of myofibroblasts that arise from musculoaponeurotic structures. It usually affects the abdominal wall but may be also found in other less common sites including the head and neck, submucosa of the oral cavity, spinal, haunch and limbs, especially, the limbs and sacrococcygeal region are rare locations. We described two cases of aggressive fibromatosis. One was 3-year-old girl with aggressive fibromatosis arising from the right leg region. The other was 20-year-old female arising from in the sacrococcygeal region. They were resected with satisfied results. Pathological examination showed that they were composed of fibroblasts, fibrocytes and bundles of collagen fiber. The aggressive fibromatosis, although rare, should be differentiated from some other soft tissue tumors with similar histological features and different localizations of intra-abdominal, abdominal wall and extra-abdominal.     

Large deformation monitoring over a coal mining region using pixel-tracking method with high-resolution Radarsat-2 imagery

Differential synthetic aperture radar interferometry (D-InSAR) is limited when exploited in high-intensity mining areas, because large deformation gradients lie beyond the maximum measurable value of the D-InSAR technique which breaks the prerequisite for successfully employing of the method. The SAR amplitude-based pixel-tracking method provides an alternative way to efficiently and robustly extract the large deformation distribution particularly when the D-InSAR technique is limited by loss of coherence. In addition, the deformation in the line-of-sight direction and the deformation along the azimuth direction are also presented in this paper with 24-day interval repeat-pass high-resolution Rardarsat-2 imagery. Combining both of these techniques can help to better understand the deformation mechanisms associated with underground mining activities. The accuracies of 0.12 m in slant-range direction and 0.19 m in the azimuth direction were achieved, respectively. Besides, the profiles across the maximum deformation region have verified that the deformation occurred during two acquisition periods is far beyond the theoretical maximum deformation gradient corresponding to high-resolution C-band SAR data. The obtained surface motion infers to the mining activities and assessed damage caused by the large deformation.     

腹主动脉联合门静脉快速灌注法在器官捐献供体肝肾联合获取中的应用

目的总结腹主动脉联合门静脉快速灌注法在器官捐献供体肝肾联合获取中的可行性和安全性。方法回顾性分析2011年9月至2014年6月在佛山市第一人民医院完成的43例中国心脏死亡供体器官捐献肝肾联合获取的临床资料。43例供体中,中国心脏死亡供体分类一类(脑死亡供体)(C-Ⅰ类)15例,中国二类(心脏死亡供体)(C-Ⅱ类)1例,中国三类(脑-心双死亡捐献供体)(C-Ⅲ类)27例。器官灌注采用腹主动脉、门静脉快速插管联合灌注法。结果开腹至腹主动脉插管时间约1.5~2.0 min,43例供体共获得肝脏43个,肾脏86个。C-Ⅰ类供体热缺血时间全部为0,其余供体热缺血时间范围为3~21 min,平均10 min。2例供肝分别因肝门部严重损伤和重度脂肪肝弃用,18例供肾分别因肾结石、肾萎缩、术前血清肌酐水平较高、肾动脉粥样硬化严重、肾微小血管血栓、多发肾囊肿、外伤性肾破裂等原因弃用,供体器官总弃用率为16%。结论腹主动脉联合门静脉快速灌注法是器官捐献供体肝肾联合获取的简单、安全的方法。     

Acute Acquired Concomitant Esotropia: Clinical features,Classification, and Etiology

Acute acquired concomitant esotropia (AACE) is a rare, distinct subtype of esotropia. The purpose of this retrospective study was to describe the clinical characteristics and discuss the classification and etiology of AACE.Charts from 47 patients with AACE referred to our institute between October 2010 and November 2014 were reviewed. All participants underwent a complete medical history, ophthalmologic and orthoptic examinations, and brain and orbital imaging.Mean age at onset was 26.6 ± 12.2 years. Of the 18 cases with deviations ≤ 20 PD, 16 presented with diplopia at distance and fusion at near vision at the onset of deviation; differences between distance and near deviations were < 8 PD; all cases except one were treated with prism and diplopia resolved. Of the 29 cases with deviations > 20 PD, 5 were mild hypermetropic with age at onset between 5 and 19 years, 16 were myopic, and 8 were emmetropic with age at onset > 12 years; 24 were surgically treated and 5 cases remained under observation; all 24 cases achieved normal retinal correspondence or fusion or stereopsis on postoperative day 1 in synoptophore; in 23 cases diplopia or visual confusion resolved postoperatively. Of the 47 cases, brain and orbital imaging in 2 cases revealed a tumor in the cerebellopontine angle and 1 case involved spinocerebellar ataxia as revealed by genetic testing.AACE in this study was characterized by a sudden onset of concomitant nonaccommodative esotropia with diplopia or visual confusion at 5 years of age or older and the potential for normal binocular vision. We suggest that AACE can be divided into 2 subgroups consisting of patients with relatively small versus large angle deviations. Coexisting or underlying neurological diseases were infrequent in AACE.     

Oxaliplatin-induced neuropathic pain involves HOXA6 via a TET1-dependent demethylation of the SOX10 promoter

Chemotherapy-induced neuropathic pain is a common dose-limiting side effect of cancer treatment but the underlying mechanisms are largely unknown. Here, we used a whole-genome expression microarray and gene ontology analysis to identify the upregulation of a sequence-specific DNA-binding protein, HOXA6, in the spinal dorsal horn on Day 10 after injection of rats with oxaliplatin. Genetic disruption of HOXA6 with siRNAs alleviated mechanical allodynia after oxaliplatin administration. Reduced representation bisulfite sequencing assays indicated that oxaliplatin decreased the methylation levels of the SOX10 promoter but not of HOXA6. TET1 was also upregulated by oxaliplatin. Genetic disruption of TET1 with siRNA blocked the promoter demethylation of SOX10 and the upregulation of HOXA6 and SOX10. Importantly, inhibition of SOX10 by intrathecal application of SOX10 siRNA ameliorated the mechanical allodynia induced by oxaliplatin and downregulated the expression of HOXA6. Consistently, overexpression of SOX10 through intraspinal injection of AAV-SOX10-EGFP produced mechanical allodynia and upregulated the expression of spinal dorsal horn HOXA6. Moreover, chromatin immunoprecipitation assays demonstrated that oxaliplatin increased the binding of SOX10 to the promoter region of HOXA6. Taken together, our data suggest that HOXA6 upregulation through the TET1-mediated promoter demethylation of SOX10 may contribute to oxaliplatin-induced neuropathic pain.