Clinicopathologic features of a patient with mucinous tubular and spindle cell carcinoma

Objective To investigate the clinicopathologic features,immunotype,differential diagnosis and prognosis of renal mucinous tubular and spindle cell carcinoma（MTSCC）. Methods Clinicopathological features and immunotype of a patient with MTSCC were studied and its related literatures were reviewed. Results The patient,a female at the age of 41 years,was admitted to our hospital due to a 2-week history of painless hematuria on May 18,2007.She was diagnosed having renal cancer measuring 3cm×2cm×2cm,which was then resected.The tumor was well-defined with a gray and soft cut surface.Cord,tubular and fascicular structures were observed under a microscope in the tumor.Tumor cells were cuboidal and spindle in shape with no significant atypia and mitosis.Tumor cells could express CKpan,CK7,P504S,and Vimentin. Conclusion MTSCC is a rare tumor with a low-grade malignance and should be differentiated from other renal cell carcinomas.