Mucinous Tubular and Spindle Cell Carcinoma (MTSCC) is infrequently seen renal malignancy with favorable outcome, when diagnosed in the early stage. Once out of kidney it is have lethal course. Radiologically MTSCC is heterogeneously hypo-enhancing renal mass in delayed phase, may mimic to papillary renal cell carcinoma and in histopathology showed these tumoral cells shows complex immunophenotype expression. As this does not show enhancement pattern of common renal cell carcinomas, radiological diagnosis may be challenging. Histopathological reporting is also tedious indeed necessary to reach definitive diagnosis, which help in tailoring follow up and prognosis. Metastatic disease has dismal outcome and responds poorly with adjuvant therapy and patient succumbs within short span of time.
Keywords: Carcinoma; mucinous; papillary; renal; sarcomatoid.
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