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<div class="HwContainer HwElement" id="HwContainer"><a class="HwMainSkipNavigation" href="#HwContentTitle"><span class="HwAccessibilityText">Skip Navigation</span></a><div class="HwBlock" id="HwMain" role="main"><div class="HwRow"><div class="HwColumn" id="HwColumnSidebar1"><div class="HwCustom" id="HwCustomSidebar"> </div></div><div class="HwColumn" id="HwColumnContent"><div id="HwContentTop"> </div><div class="HwTypeFocus HwContentWrapper HwElement" role="article" id="HwContentWrapper"><div class="HwCustom" id="HwCustomContentTop"> </div><div class="HwContentHeader"><p><a name="top" id="Hwtop"><span class="HwAccessibilityText">Top of the page</span></a> </p></div><div class="HwContentTitle"><h1 id="HwContentTitle" tabindex="-1">Types of Kidney Stones</h1></div><div class="HwContentTopNavigation"> </div><div class="HwContent"><div class="HwNavigationSection HwSectionSpecialSection" id="sec-hw204182-sec"><h2 class="HwSectionTitle" fingerprint="b4cb0a40" fingerprint-exact="e7c3d1bb">Overview</h2> <p fingerprint="3934ddae" fingerprint-exact="819dd586"> The four main types of kidney stones are: </p> <dl> <dt fingerprint="61340518" fingerprint-exact="d154d6e8">Calcium stones.</dt> <dd fingerprint="8467dd98" fingerprint-exact="ab345d63"> <p> Most kidney stones are made of calcium compounds. Conditions that cause high calcium levels in the body, such as hyperparathyroidism, increase the risk of calcium stones. </p> </dd> <dt fingerprint="64b46c51" fingerprint-exact="2b38daaf">Uric acid stones.</dt> <dd fingerprint="6eda07fe" fingerprint-exact="eacff8e3"> <p> Some kidney stones are made of uric acid, a waste product in urine. You're more likely to have uric acid stones if you have: </p> <ul> <li> Low urine output. </li> <li>A diet high in animal protein, such as red meat. </li> <li>An increase in how much alcohol you drink. </li> <li>Gout. </li> <li> Inflammatory bowel disease. </li> </ul> </dd> <dt fingerprint="69d3e7d6" fingerprint-exact="4021f0b7">Struvite stones.</dt> <dd fingerprint="f78b4c09" fingerprint-exact="9ac036eb"> <p> Some kidney stones are struvite stones. These can be serious, because they are often large stones and may occur with an infection. </p> </dd> <dt fingerprint="3d071956" fingerprint-exact="3b61c783">Cystine stones.</dt> <dd fingerprint="01dc89c2" fingerprint-exact="52126e54"> <p> Stones made of a chemical called cystine are less common. They're more likely to occur in people who have a condition that results in too much cystine in the urine (cystinuria). </p> </dd> </dl> </div><div class="HwNavigationSection HwSectionRelatedInformation" id="sec-hw204182-RelInfo"><h2 class="HwSectionTitle" fingerprint="d5f858e0" fingerprint-exact="c0ffe04b">Related Information</h2><ul fingerprint="1140b0a2" fingerprint-exact="d6634b77"><li class="HwOptionalAny"><a data-hw-type="MedicalTest" data-hw-document-href="hw7826" data-hw-section="hw7829" hw:document-type="MedicalTest" hw:document-href="hw7826" data-hwid="hw7826" hw:section-href="hw7829" href="?id=hw7826#hw7829">Kidney Stone Analysis</a></li><li class="HwOptionalAny"><a data-hw-type="Major" data-hw-document-href="hw204795" data-hw-section="acl5422" hw:document-type="Major" hw:document-href="hw204795" data-hwid="hw204795" hw:section-href="acl5422" href="?id=hw204795#acl5422">Kidney Stones</a></li></ul></div><div class="HwNavigationSection HwCreditsSection HwCreditsWithoutNavstack 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