骨化的

CT is the modality of fist choice in diagnosis of ossifying fibroma of craniofacial region, especially, CT bone algorithm reconstruction is valuable to its final diagnosis, MRI, as a complemental imaging examination method, also has some characteristics, the combined application of both contributes to the improvemet of its diagnostic accuracy.

CT是颅面部骨化性纤维瘤的首选检查方法、尤其是CT骨窗对该病诊断价值较大，MRI表现也具有一定的特征，是一项重要的辅助检查手段，二者的联合应用可提高该肿瘤诊断的准确性。

Sarcophagus beetles, which can not be replaced by Diptera, play a pivotal role not only in estimating PMI of dry human skeletal remains in the later stages decomposition of carcasses, but also the corruption, destruction, decomposition and posture changes of carcasses.

作为法医昆虫学的主要研究对象之一，嗜尸性甲虫在腐败晚期干化和白骨化尸体的死亡时间推断中具有双翅目昆虫所无法取代的重要意义，并对尸体的腐败、破坏、分解和姿势改变发挥着不容忽视的作用。

Here we present a case of 21 year-old male who suffered from recurrent swelling in left side of mandible which had received surgery for ossifying fibroma in another hospital when he was 19 years old. Obvious facial asymmetry was noted but no sensory dysfunctions were detected. The lesion showed well-demarcated, multilocular radiolucency but radiopacity centrally. We applied segmental resection via extra-oral approach and reconstructed with anterior iliac crest bone graft. After removal of MMF in six week, the wound healed well and joint function was good without malocclusion. After follow-up of one year, no recurrences were noted.

本病例为－21岁之男性，在19岁时因为左下颚骨角区肿大在某医院接受外科手术处理，术后病理报告为骨化纤维瘤，因为复发的肿胀而来本院寻求治疗，临床检查并无疼痛及下唇区感觉异常的问题，放射线影像为周界清晰，多腔室放射透过性合并中央放射不透过性之不规则小块，手术方式为从口外颚下切线，做下颚骨片段式切除，并以肠骨脊海绵骨移植修补骨缺损加以颚间固定六周，术后伤口恢复及愈合良好，颚骨关系稳定无咬合异常的情况，无张口受限的问题。

Then, under the control of systemic factors, mesenchymal cells aggregate and differentiate to form catilage blastemal elements that prefigure skeletal limb components.

脊椎动物胚胎期骨与关节系统的发生是一种复杂生命现象，起始于中胚层间充质细胞的定向聚集，形成肢芽，然后在一系列作用因子的调控下，肢芽内细胞进一步分化，形成具有骨骼雏形的软骨原基，后者经软骨内骨化发育成骨。

The manifestation and variation of MRI in myositis ossificans have certain characteristics. Thus this understanding is helpful to improve diagnosis and differential diagnosis of myositis ossificans, and unnecessary operation might be avoided.

骨化性肌炎MRI表现有一定的特点和变化规律，具有一定的特征性，提高对其MRI表现的认识有助于诊断和鉴别诊断，避免不必要的手术。

Taken together, these findings suggest that Bmp-4, Shh and Wnt-5a gene expressions may act together on the epithelial-mesenchymal interactions occurring in several aspects of the early mouse craniofacial development, such as odontogenesis, neuronal development, maxillae and mandible ossification, palatogenesis and tongue formation.

综上所述，这些研究结果表明，骨形态发生蛋白4， Shh和Wnt信号- 5A型基因表达共同作用，对早期小鼠颅面部的发育中上皮间的相互作用产生很大影响，如牙齿的发育，神经发展，上颌骨和下颌骨骨化及舌头的形成。

Suggested theories for the etiology of these lesions include congenital malformation of a displaced bronchial anlage, hyperplasia of normal lung tissues, cartilaginous benign neoplasia, and responses to inflammation.

本病的发病机制学说包括支气管原始细胞错位导致的先天性异常，正常肺组织的增生，良性肿瘤的软骨化，以及炎性反应。

Found in February 2002 in a cave where bears hibernated in the Carpathian mountains in southwest Romania, the jaw was radiocarbon dated by a team led by Erik Trinkaus, an anthropology professor at Washington University in Saint Louis, Missouri.

这块化石，是2002年二月的时候，科考人员在罗马尼亚西南部一个熊用来冬眠的山洞里发现的。来自密素里州的圣路易华盛顿大学的人类学教授， Erik Trinkaus 带领他的同事们对这块颌骨化石进行了放射测定。确定了它存在的日期。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。