Welcome to health care magic. 
1.The present 
ultrasound report suggest there is an submucosal fibroid - the fibroid / mass lesion that is projecting in to the mucosal layer side.
2.There is no generative changes seen in the 
uterine fibroid - suggestive or recent history. And rest of the 
uterus echo-textures appears normal.
3.Uterus is bulky due to presence of the uterine fibroid.
4.The treatment in this case include 
hormonal treatment and a good followup, works in case of small sized mass lesions.
5.Finally in large and non responsive cases an operative removal of fibroid / 
hysterectomy depending on the age and symptoms patient presents with. Good luck. 
Hope i have answered your query,
any thing to ask do not hesitate to ask.
http://doctor.healthcaremagic.com/doctors/dr-ganesh/62888