Sections show a benign tumor with vague lobular appearance, it is formed of a dominant component of mature fat cells with few lipoblasts. Separating stroma is fibrotic and vascular. No evidence of malignancy.
Arm mass.
Fatty soft tissue piece measured 13x10x5.5 cm.
Arm mass, excision:
COMMENT:
This tumor is benign, however local recurrence is reported in 9-22% of cases.