Right lower extremity pain and swelling Note that evaluation for a soft tissue mass is limited by the lack of intravenous contrast.There is abnormal marrow signal within the proximal diaphysis of the right tibia. No discrete fracture line is evident. There is diffuse soft tissue edema particularly along the posterior medial and anterior portions of the lower extremity. There is surrounding muscular edema at the level of the abnormal marrow signal as well. The marrow signal of the fibula and left tib-fib are normal. Within the limits of exam, no discrete mass is identified within the anterior soft tissues.
1. Abnormal marrow signal within the proximal diaphysis of the right tibia may represent early bone infarction or possibly stress injury. No discrete fracture line is evident.2. Diffuse soft tissue edema and inflammation without discrete soft tissue mass although the exam is limited by the lack of contrast administration.