What is septated cyst?

i had my TVS yesterday but may obgyne was on leave so the result isnt clear for me due to its technical terms..i just want to hear your opinion about the result of my TVS that says: NORMAL SIZED ANTEVERTED UTERUS WITH PROLIFERATIVE PHASE ENDOMETRIUM. SEPTATED CYST ON RIGHT OVARY, consider CYSTADENOMA. NORMAL SONOGRAM OF THE LEFT OVARY. MINIMAL CUL-DESAC FLUID..what's dis all about? waiting for reply..thanx...