Date of Presentation:2/23/2022

Attending pathologist: Anil Parwani, MD, PhD, MBA

Presented by: Sreya Tummalapalli

Prepared by: Vidya Arole, MD



62 years oldĀ femaleĀ Patient admitted who was for chest pain and food poisoning. During work-up, CT A/P obtained showing 4.3x 3.8 cm left renal mass and adrenal incidentaloma.

The renal biopsy revealed a renal cell carcinoma and patient underwent left partial nephrectomy.


5.0 x 4.8 x 3.9 cm tan-white, pink-red, firm, bulging, centrally hemorrhagic and necrotic, and well demarcated mass that is predominantly well circumscribed with focal areas of possible extension into the surrounding parenchyma.

What is the most likely diagnosis?

  1. Papillary renal cell carcinoma
  2. Tubulocystic renal cell carcinoma
  3. Mucinous tubular and spindle cell carcinoma
  4. Medullary carcinoma
  5. Collecting duct carcinoma
Mucinous tubular and spindle cell carcinoma