Plasmacytoma tibia LSBU

Description: Radiology case 454-3451 Clinical presentation: 43 year old female with pain in leg after a fall.
Well circumscribed expanding lesion in the proximal metaphysis and adjacent diaphysis of the left tibia. Anteriorly in the lateral view, a stepped break in the cortex over the lesion indicates a fracture and is probably responsible for the denser oblique line that crosses the tibia in the AP view. The endoseal boundary of the lesion has a narrow zone of transition between normal bone and the pathology. The process undermines the cortex, but there is no indication of a lamellar periosteal reaction. Thickening of parts of the cortex appears related to the fracture.