Female 52 years old Reason: left upper back mass - evaluate for lipoma versus other History: mass Within the left upper pelvic area, there is a well-circumscribed palpable mass measuring 2.5 x 4.4 x 1.3 cm. This mass has internal echogenicity isoechoic to surrounding fat and soft tissue. No abnormal internal vascularity. Within this mass there is a focal nodular area which is more hypoechoic compared to the mass.
Well-circumscribed left upper back mass isoechoic to surrounding subcutaneous fat most likely represents a lipoma or fibroma. If there is continued clinical concern regarding this nodule, consider cross-sectional imaging for further evaluation.