Hi There. I have two questions. I have deficiency of vitamin D..  And was under medication for around 3 months  now,  and recently from past 2-3 weeks suffering from pain near right upper abdomen. I have consulted a doctor and was suggested to get ultrasound done for abdomen and pelvis. The result is as per below 1. Retroperitoneum - obscured by bowel gas. 2. Urinary bladder is partially distended. The patient could not comply with a distended urinary bladder.. Could someone please let me know what the above mentioned two points mean? And what needs to be done?