1. Tumor-to-Tumor Metastasis: Renal Cell Carcinoma Metastasizing to a Lipoma of the Thigh
- Author
-
Kelsey, Martin, Christopher, Rivera-Pintado, Katherine, Cerniglia, Kudret, Usmani, Gord, Zhu, and Tae Won B, Kim
- Subjects
Male ,Thigh ,Humans ,Neoplasms, Second Primary ,Orthopedics and Sports Medicine ,Surgery ,Lipoma ,Carcinoma, Renal Cell ,Kidney Neoplasms ,Aged - Abstract
A 73-year-old man with a medical history significant for renal cell carcinoma (RCC) presented with widespread osseous metastases and imaging suspicious for RCC metastasizing to a lipoma interdigitated within the right vastus lateralis. The patient's pathological fractures were surgically addressed, and the lipoma excised. Final histology revealed a thigh lipoma involved by metastatic RCC without direct extension.Tumor-to-tumor metastasis is a rare occurrence, with RCC typically being the most common "recipient" tumor. This is the first case to the best of our knowledge of RCC metastasizing to a lipoma, highlighting a rare phenomena in a patient with metastatic disease.
- Published
- 2022
- Full Text
- View/download PDF