Abstract
Mucinous tubular and spindle cell carcinoma (MTSCC) is a rare type of renal cell carcinoma (RCC) recognized as an independent entity in the latest WHO (World Health Organization) classification. We here report a case of a 51-year-old female patient with MTSCC, who presented with abdominal pain and left lower pole kidney lesion on the computed tomography scan. A robotic-assisted laparoscopic partial nephrectomy was performed. The diagnosis was confirmed on histopathological examination. MTSCC is rare and generally indolent. Either partial or radical nephrectomy is usually curative. The prognosis is usually favorable. However, occasionally, MTSCC could demonstrate aggressive features requiring systemic therapy. There are also several mimickers of MTSCC, which carry different prognostic and treatment profiles. Histological, immunohistochemical, and molecular genetic profile are useful in diagnosing the disease.