In the present case, although the uterine tumor was depicted as a poorly demarcated diffuse lesion within the myometrium on MRI, a lipomatous component indicative of a benign lipomatous tumor such as a lipoleiomyoma [ 11 – 13 ], angiomyolipoma [ 14 ], or pure lipoma [ 15 ] was also detected within the tumor.
Source: wiktionary