Turner White CommunicationsAbout TWCSubscribeContact TWCHomeSearch
Hospital PhysicianJCOMSMPBRMsCart
Current Contents
Past Issue Archives
Self-Assessment Questions
Review of
Clinical Signs
Clinical Review
Pediatric Rounds
Resident Grand Rounds
Article Archives
Case Reports
Clinical Practice
Pediatric Rounds
Resident Grand Rounds
Review of
Clinical Signs

Guide to Reading
Hospital Physician
Editorial Board
Information for Authors

Reprints, Permissions, & Copyright
Site Map
Self-Assessment Questions

Family Medicine

Answer 2
  1. Calcium oxalate. Renal stones occur in approximately 1% of the population annually, with men twice as likely as women to develop renal stones.1 Calcium oxalate stones are the most common type of urinary calculi (70% of all stones), followed by struvite (15%-20%), calcium phosphate (5%-10%), and cystine (1%). Urinary tract infections caused by urease-producing organisms, such as Proteus species, can lead to struvite stones. Calcium-containing stones are radiopaque and can be seen on plain radiography, while stones that do not contain calcium are often radiolucent and cannot be visualized on plain radiography. Certain diseases that cause hypercalciuria, hyperuricosuria, and hypocitraturia increase the risk for stone formation.

    1. Pietrow P, Karellas M. Medical management of common urinary calculi. Am Fam Physician 2006;74:86-94.

Click here to return to the questions


Hospital Physician     JCOM     Seminars in Medical Practice
Hospital Physician Board Review Manuals
About TWC    Subscribe    Contact TWC    Home    Search   Site Map

Copyright © 2009, Turner White Communications
Updated 1/04/08 • kkj