ArticleRadiology case reports2026
Mucinous tubular and spindle cell carcinoma of the kidney: A case report and brief review of literature.
Article in Radiology case reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Mucinous tubular and spindle cell carcinoma (MTSCC) is a rare subtype of renal cell carcinoma (RCC), accounting for less than 1% of primary renal tumors. Despite its generally favorable prognosis, accurate diagnosis remains challenging because it overlaps with other RCC variants. The present report describes a case of incidentally detected MTSCC in a patient presenting with elevated low-density lipoprotein. A 39-year-old man presented for evaluation of elevated lipid levels and was incidentally found to have 2 left renal masses on ultrasonography. Computed tomography scan revealed a 26 × 24 mm exophytic lesion in the mid-portion of the left kidney with faint, homogeneous enhancement, and a 7 mm lesion in the upper pole. Magnetic resonance imaging confirmed both lesions with diffusion restriction, suggestive of RCC. Laparoscopic partial nephrectomy was performed. Histopathology examination confirmed MTSCC in the mid-pole lesion and a benign renal tubulopapillary adenoma in the upper pole. The patient's postoperative course was uneventful, and follow-up ultrasonography showed no recurrence. A brief review of the literature identified 5 recent reports encompassing 10 documented cases of renal MTSCC. The distribution by sex was equal, with 5 male and 5 female patients. Tumor occurrence was also evenly split between kidneys, with 5 cases on the right and 5 on the left. The patients' ages varied from 41 to 70 years. Mucinous tubular and spindle cell carcinoma is a rare tumor that may be detected incidentally. Laparoscopic partial nephrectomy may provide an effective, kidney-sparing approach with favorable outcomes.
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