From the case:
Osteosarcoma - distal femur (gross pathology)
Download
Info

Conventional Osteosarcoma of the distal femur of an 18-year-old male.
Tumor infiltrates the medullary cavity, erodes the overlying cortex, and demonstrates soft tissue extension
Case Discussion
Attribution
Image reproduced with permission.
Author: Chandra Krishnan.
Original file: https://www.flickr.com/photos/ckrishnan/3927147140/in/set-72157621222810638/
Modifications: square crop and rotation
License: All rights reserved by the author. See orignial file for more details.
If you believe your copyright has been infringed, please write to license@radiopaedia.org giving details of why you believe this is so.