Date of Presentation:11/29/2021

Attending pathologist: Anil Parwani, MD, PhD, MBA

Presented by: Saba Shafi, MD

Prepared by: Saba Shafi, MD

Organ:Kidney

HISTORY:

A 71-year-old male was evaluated for slowly progressive lumbar back pain. Later, he developed acute onset of pain in his back and was found to have extensive osteolytic metastatic disease on CT imaging, and numerous pulmonary nodules assumed to be metastatic. He was noted to have a 4.6 x 3.1 cm lesion along the upper pole right kidney concerning for liposarcoma v RCC v angiomyolipoma. A biopsy from this renal mass was taken.

GROSS:

Microscopic image possibly detecting cancerous areas in human tissue
Microscopic image possibly detecting cancerous areas in human tissue

What is the most likely diagnosis?

  1. Epithelioid hemangioendothelioma
  2. Spindle cell hemangioma
  3. Kaposi’s sarcoma
  4. Renal hemangiosarcoma
Renal hemangiosarcoma

CASE SUMMARY