A 48-year-old white man presents with unremitting right flank pain. He denies dy

A 48-year-old white man presents with unremitting right flank pain. He denies dysuria or fever. He does report significant nausea without vomiting. He has never experienced anything like this before.
What is the probable diagnosis?
What are other possible diagnoses?
At this stage of the case study, what diagnostic studies and basic treatments are most appropriate to order and why?
Please be specific and precise with answers. A table format or bullet points would be beneficial in presenting your information with clarity or organization.
Reference for management of the case study:
http://www.niddk.nih.gov/health-information/health-topics/urologic-disease/kidney-stones-in-adults/Pages/facts.aspx
Post your initial response and respond to one student. Both responses should be a minimum of scholarly written, APA formatted, and referenced.  A minimum of 2 references are required