72-year-old male with history of lymphoma left greater trochanter lesion. There is an enhancing, low T1, high T2 signal lesion within the proximal left femur involving the entire femoral neck and intertrochanteric femur with intramedullary tunneling inferiorly into the proximal femoral diaphysis, extending off the field-of-view inferiorly. There is cortical irregularity and thinning proximally with associated circumferential soft tissue mass, which also extends off the field-of-view inferiorly. The findings are highly suspicious for lymphoma, given the patient's history.
Left proximal femur lesion highly suspicious for lymphoma, given the patient's history. Additional differential considerations include metastasis and osteomyelitis. The lesion extends inferiorly off the field-of-view on the current exam, and MRI of the femur can be performed for full extent of the lesion, as clinically indicated.