Renal Pelvis and Renal Calices Sarcomatoid Carcinoma: A Case Report
2020
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.
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