title: Sarcomatoid carcinoma of the renal pelvis: A case report.
abstract: Sarcomatoid carcinoma is a high-grade malignant neoplasm which exhibits morphological and/or immunohistochemical evidence of bidirectional epithelial and mesenchymal differentiation. Sarcomatoid carcinoma occurring in the upper urinary tract is rare. The present study reports a case of primary sarcomatoid carcinoma of the renal pelvis. A 49-year-old female patient was admitted to Beijing Chao-Yang Hospital for experiencing two weeks of intermittent hematuria. A computed tomography scan revealed a mass of 2 cm in diameter in the left renal pelvis. A retroperitoneoscopic nephroureterectomy combined with a bladder cuff excision was performed, and the final pathological diagnosis was sarcomatoid carcinoma of the renal pelvis. The patient did not receive systemic chemotherapy and radiotherapy. Regular follow-up was performed for 30 months, and there was no evidence of tumor local recurrence or distant metastasis.
authors.affiliation: Department of Urology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, P.R. China.
authors.forename: Xiquan
authors.initials: X
authors.lastname: Tian
authors.affiliation: Department of Urology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, P.R. China.
authors.forename: Jiyu
authors.initials: J
authors.lastname: Zhao
authors.affiliation: Department of Pathology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, P.R. China.
authors.forename: Yue
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Department of Urology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, P.R. China.
authors.forename: Nianzeng
authors.initials: N
authors.lastname: Xing
keywords: renal pelvis; sarcomatiod carcinoma; urothelial tumor