Sometimes, during treatment for infertility
, there maybe development of large cysts within both ovaries. these are usually large follicles which fail to rupture and form cysts. These may then show hemorrhage within. Differentiation between simple hemorrhagic cysts and endometriotic cysts is often difficult since endometriotic cysts also show hemorrhage within. However, considering her treatment history and assuming that she was not symptomatic for endometriosis
(your gynaecologist would have suspected it), the MRI
features probably represent simple hemorrhagic cysts. Usually, the protocol is to repeat a USG / MRI her next normal cycle to look for persistence of the cysts and only if these persist over time or show complication, would surgery be considered. Also, at her age although malignancy is rare, your gynaecologist may advice a CA-125
Hope this helps.