肾胚胎性横纹肌肉瘤表现为肾实质及肾盂内分叶状实质性肿块，侵犯肾门及输尿管上段，肾周见新月形低密度的包膜下积液。

The rhabdomyosarcoma showed signs of lobular solid mass within the renal parenchyma, pelvis or upper part of the ureter, with crescent low density subcapsular hematoma surrounding the kidney.

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目的探讨硬化性横纹肌肉瘤(SRMS)的临床病理学特征，以及与胚胎性横纹肌肉瘤(ERMS)和腺泡状横纹肌肉瘤(ARMS)之间的关系。

OBJECTIVE: To study the clinicopathologic characteristics of sclerosing rhabdomyosarcoma (SRMS) and its distinction from embryonal rhabdomyosarcoma (ERMS) and alveolar rhabdomyosarcoma (ARMS).

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目的探讨硬化性横纹肌肉瘤(SRMS)的临床病理学特征，以及与胚胎性横纹肌肉瘤(ERMS)和腺泡状横纹肌肉瘤(ARMS)之间的关系。

OBJECTIVE: To study the clinicopathologic characteristics of sclerosing rhabdomyosarcoma (SRMS) and its distinction from embryonal rhabdomyosarcoma (ERMS) and alveolar rhabdomyosarcoma (ARMS).

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