A 42-year old male on a high calcium diet has complained of dull persistent pain in the lower back and flank regions for several days. He exercises daily but fails to replenish water lost through urination and perspiration on a regular basis. This morning he awakened with intense pain in the abdomen. A routine urinalysis reveals a significant level of hematuria. 

• Explain what may be a likely diagnosis
• Include what helped you to draw these conclusions
• Discuss any potential treatment options.