副节

T2WI上副节瘤绝大多数呈中等信号，神经鞘肿瘤绝大多数呈高信号，二者差异有显著性意义（P〈0.01）。T1WI上它们基本上都呈低信号。

Most paragangliomas showed intermediate signal intensity on T2-weighted images , and nearly all nerve-sheath tumor presented as high signal intensity on T2-weighted imaging ( P < 0.01 ) .

色素性肾副节瘤临床病理观察

Pigmented renal paraganglioma : a clinicopathologic analysis

通过准双曲面齿轮副节锥的几何关系，建立了节锥参数的一组基本方程。

A set of fundamental equations for the pitch parameters is established through the geometrical relationship of a pair of hypoid gears .

结论色素性肾副节瘤是一种罕见的肿瘤，器官样结构及神经内分泌标记是其诊断的主要依据，要注意与其形态相似的良性或恶性肿瘤相鉴别。

Conclusions Pigmented renal paraganglioma is a rare tumor , and its diagnostic basis is the organoid pattern and positive neuroendocrine markers . Some benign or malignant tumors with similar morphological changes have to be taken into consideration in differential diagnosis .

通过准双曲面齿轮副的节锥几何关系，建立了包含7个节锥参数并由4个方程构成的节锥参数基本方程组。

A set of fundamental equations that consist of four formulae and contain seven pitch parameters is established through the pitch cone geometrical relationship of a pair of hypoid gears .