Qiliang  Yin,Shijie  Lan,Fengming  Jiang,Di Wu,
Renal Pelvis and Renal Calices Sarcomatoid Carcinoma: A Case Report
Journal of Surgical Oncology
2020
2674-3000
http://dx.doi.org/10.31487/j.JSO.2020.05.01
https://www.sciencerepository.org/renal-pelvis-and-renal-calices-sarcomatoid-carcinoma_JSO-2020-5-101 
Abstract: Introduction: Sarcomatoid carcinoma is one of the malignant neoplasms characterized by the ability to
differentiate into both epithelial tissue and mesenchymal tissue. And it is rare in urinary system with a high
degree of malignancy and prognosis is poor.
Patient Concerns: The present article reports a 63-year-old man presented with recurrent left flank pain for
two years. Radiological tests suggested a space-occupying lesion in left kidney with enlarged paranephric
/retroperitoneal lymph nodes.
Diagnosis: The pathological diagnosis following left nephrectomy indicated renal pelvis and renal calices
sarcomatoid carcinoma; pTNM: T4N0M0.
Interventions: No radiotherapy or chemotherapy were performed after the surgery and underwent rapid
growth.
Outcomes: The patients died six months later.
Conclusion: Renal pelvis and renal calices sarcomatoid carcinomas is a highly malignant tumor and
difficult to diagnose at its early stage. Definite diagnosis relies on the combination of immunohistochemistry
(IHC) and morphological analyses and there currently is no effective treatment.Keywords: Sarcomatoid carcinoma, Renal pelvis, renal calices, immunohistochemistry, treatment