Invasive transitional cell carcinoma of kidney is a rare neoplasm in a growth pattern of diffuse rather than expansile infiltration.

• 肾脏侵犯性移形上皮细胞癌为一少见的肾脏肿瘤，主要以浸润而非向外扩展方式生长，通常会使肾脏变大但保留其蚕豆形，且肿瘤界限不明显。