Female, 66 years old. Left hip pain, evidence of pathologic fracture A lesion within the left femoral neck measures approximately 2 cm x 2 cm x 5 cm, has decreased signal on T1 and increased signal on T2 weighted images. Increased signal within the lesion on T1 fat sat precontrast images is likely artifactual, but precludes evaluation for lesion enhancement. There is a small amount of surrounding edema outside the lesion. An associated nondisplaced pathologic fracture is more readily evaluated on recent CT imaging.Partially imaged pelvic masses may reflect uterine fibroids. The imaged soft tissues are otherwise unremarkable.
Lesion within the left femoral neck as detailed above. Given the imaging appearance and the patient's age, this likely represents a solitary plasmacytoma or metastasis of unknown origin- statistically most likely lung or renal primary.