Moustache sign

Abdominal Radiology -     

Cobblestone sign

Abdominal Radiology -     

Kirklin sign

Abdominal Radiology -     

Rigler sign

Abdominal Radiology -     

Chilaiditi sign

Abdominal Radiology -     

Teardrop sign

Abdominal Radiology - We have submitted an interesting image of teardrop sign on prostate MRI.     

Tree-in-bud sign

Abdominal Radiology -     

膝关节韧带损伤与人工韧带研究进展

目的:对人工材料干预膝关节韧带康复与治疗的手段进行分类与归纳,对膝关节损伤后人工生物材料干预下的康复与治疗手段与机制进行探讨,并对其目前面临的研究难点及重点进行总结.方法:作者应用计算机检索PubMed数据库(http://www.ncbi.nlm.nih.gov/PubMed)及CNKI数据库(www.cnki.net/index.htm),在标题和摘要中以"膝关节,韧带"或"Knee,ligament"为检索词进行检索.选择文章内容与膝关节韧带治疗手段、材料学特点、生物相容性及其应用效果相关,同一领域文献则选择近期发表或发表在权威杂志文章.共纳入22篇文献.结果:组织工程学前交叉韧带人工韧带是目前研究的热点方向,人们在支架材料的选择和构建的具体方法,种子细胞的分离和培养方法,细胞因子和表面修饰的应用等方面做了大量的研究,目前在生物力学上和体外实验上都获得了比较好的效果,但是仍然存在相当多的疑问.随着细胞生物学和分子生物学方法和技术的进步,肌腱韧带损伤修复的研究进入了崭新阶段,也取得了巨大的进展.组织工程学的兴起,为韧带提供了一条有效的途径.结论:在膝关节前、后交叉韧带重建中,自体移植物仍是目前最佳选择,但是人工韧带也展示出了其特有的优势.虽然目前人工韧带还存在不足之处,还不是理想的移植物,不能完全代替交叉韧带,但是人工韧带为前、后交叉韧带重建的确提供了一种选择,是交叉韧带重建进展史中重要的一步.     

Grey Turner's sign and Cullen's sign in acute pancreatitis

Four patients with acute pancreatitis presenting with Grey Turner's sign or Cullen's sign have been studied by computed tomography (CT). These observations help confirm the precise anatomic pathways by which the extravasated pancreatic enzymes and their effects lead to these cutaneous discolorations.Grey Turner's sign is produced by spread from the anterior pararenal space to between the two leaves of the posterior renal fascia and subsequently to the lateral edge of the quadratus lumborum muscle. Communication may be established to the posterior pararenal space and to the structures of the flank wall. The lumbar triangle, a site of anatomic weakness on the flank wall, may serve as a structural predisposition.Cullen's sign can be seen to be secondary to the tracking of liberated pancreatic enzymes to the anterior abdominal wall from the inflamed gastrohepatic ligament and across the falciform ligament. Another more direct pathway may be extension from inflammatory changes of the small mesentery or greater omentum to the round ligament, and then to properitoneal fat deep to the umbilicus.     

漩涡征及滤泡环征诊断早期卵巢扭转

目的 评价超声漩涡征及滤泡环征诊断早期卵巢扭转的临床价值。方法 对53例经手术及病理证实为卵巢扭转的术前超声表现进行回顾性分析。结果 53例经超声诊断45例。45例中,40例显示漩涡征和(或)滤泡环征。其中超声显示单纯漩涡征20例,漩涡征伴有滤泡环征12例,单纯滤泡环征8例。32例漩涡征中,8例位于外侧,24例位于内侧。外侧与内侧卵巢体积[(321.94±271.43)mm³vs (86.45±60.82)mm³]差异有统计学意义(t=3.847,P=0.024)。53例卵巢扭转中,5例漏诊,3例误诊。结论 超声显示漩涡征或滤泡环征是诊断早期卵巢扭转的特征性表现。     

The ribbon sign

Abdominal Radiology -     

The football sign

Abdominal Radiology -