From micro- + lithiasis. <span class="searchmatch">microlithiasis</span> (plural microlithiases) (pathology) lithiasis involving a large number of very small stones...
cystolithiasis dacryolithiasis enterolithiasis lithiasic lithiatic <span class="searchmatch">microlithiasis</span> nephrolithiasis nephroureterolithiasis pancreatolithiasis pseudolithiasis...