<s>[INST] Sir,Recently my brother had a pain in the lower abdominal but it stays small days , we consult local doctor, Ultra sound,  blood test and x ray given for super pubic pain and all of these there no such reason found, but from X-ray there a small white radio opaque shadow found in the right pelvis in the line of ureter and doc diagnosis as a tiny calculi  found. Please suggest what it really..with regards, subrata [/INST] Dear Subrata Most of the lower abdominal pain is due to presence of Urinary pathologies like renal stone or Urinary tract infections. Since you are saying USG was done didnt detect  but X-ray showing something in the tract is rare ... but since it is there better start treatment to lyse the renal stones so Put him on Tab.norflox 400 1tab Two times a day for minimum of 10 days Tab.Tamfil F 1 tab in morning and 1\2 a tab at night Tab.voveran 50mg 1 tab if pain present Tab.Ranitidine 1 tab two times a day before food Syp. Citralka 2tsp in 1 galss of water at night Hope this helped you Do visit if needed help thank you </s>