CT of a renal mucinous tubular and spindle cell carcinoma

Abstract: Mucinous tubular and spindle cell carcinoma (MTSCC) is a rare renal epithelial neoplasm which has only been recently described. It is characterized pathologically by tightly packed, elongated tubules with transition into spindle cell areas and mucinous stroma. Previous literature has laid particular emphasis on its pathology manifestations, while radiological features have not been well studied. We herein report the CT features of a case of MTSCC. The CT findings of MTSCC present certain characteristics in the case. The radiological morphology of this low-grade tumor helps its differentiation from sarcomatoid renal carcinoma.