病因

BACKGROUND: Alloimmune lung injury, characterized by perivascular lymphocytic inflammation, lymphocytic bronchiolitis, and obliterative bronchiolitis, causes substantial morbidity and mortality after lung transplantation and bone marrow transplantation, but little is known regarding its pathogenesis.

背景：同种免疫肺损伤以管周淋巴细胞浸润、淋巴细胞性细支气管炎和闭塞性细支气管炎为特征，它在肺移植和骨髓移植患者中有较高的患病率和死亡率，但是其病因学目前知之甚少。

BACKGROUND: Odontogenic infection factor has been given much importance in the study of the etiology of secondary trigeminal neuralgia,and the theory of jaw bone cavities is proposed.

背景：三叉神经痛的发病原因中因牙源性感染因素所致，在继发三叉神经痛的病因学研究中愈来愈受到重视，并提出了颌骨骨腔病变学说。

Objective:To discuss the causes and related factors of oligohydramnios,pursue the correct treatment and reduce the mortality of perinatal infant.

目的：探讨羊水过少的病因及其相关因素，寻找正确的处理方法，降低围产儿病死率。

The determination of serum sex hormone is of clinical importance for the etiological analysis, the treatment and the prognostic judgement of oligospermia and azoospermia.

结论血清性激素水平检测应用于少精症、无精症患者的病因分析、制订治疗措施和预后判断具重要的临床意义。

The senile ARF is always accompanied with multiple organ dysfunction syndrome, oliguria and high metabolism.

本研究旨在探讨年龄≥60岁的老年人发生ARF的病因、临床表现、临床特点及评价指标。

Objective To detect the clinical manifestations, diagnosis and treatment of painful ophthalmoplegia syndrome.

目的探讨痛性眼肌麻痹综合征的病因、临床特点、诊断及治疗。

The cause and attribution of non-ossifying fibroma remain controversial. It may be a benign bone tumor originated from the osteofibrous.

该瘤的病因和本质尚不明确，从病理组织学、临床过程和生物学行为特点来看，应视为骨纤维细胞来源的良性肿瘤。

Now, loosening and osteolysis have become the most serious long-term complications and the most common indications for revision.

目前，金属假体的松动和骨溶解已成为人工关节置换术后最严重的远期并发症，是人工关节翻修术最常见的病因。

Objective To explore non-traumatic osteonecrosis of the femoral head of the clinical features and study the development trend of their cause.

目的 探讨非创伤性股骨头坏死的发病特点，研究其病因的发展趋势。

But the pathophysiology of osteonecrosis of the femoral head has not been completely elucidated.

目前认为激素和酒精的摄入是股骨头缺血坏死最常见的两大病因。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。