Date of Presentation:1/26/2023

Attending pathologist: Anil Parwani, MD, PhD, MBA

Presented by: Himani Kumar, MD

Prepared by: Himani Kumar, MD



64-year-old male with history of ulcerative colitis, asthma presented with renal mass.

CT abdomen/pelvis showed cystic and solid enhancing renal mass at left inferior pole kidney with focal calcification and measures 1.9 x 1.9 x 1.5 cm.

Patient subsequently underwent left robotic partial nephrectomy.


The specimen consists of a 9.3 g, unoriented 3.5 x 2.7 x 2.3 cm partial nephrectomy. A 1.9 x 1.8 x 1.3 cm tan-yellow, pink, partially calcified, partially cystic, and well-circumscribed.

No areas of hemorrhage or necrosis are identified.

What is the most likely diagnosis?

  1. Clear cell renal cell carcinoma
  2. Clear cell papillary renal cell tumor
  3. Papillary renal cell carcinoma
  4. Multilocular cystic renal cell carcinoma
  5. Xp11 translocation carcinoma
Clear cell papillary renal cell tumor