Vandeursen H, Baert L
Department of Urology, University Hospital St.-Pieter, Catholic University of Leuven, Belgium.
J Urol. 1990 Oct;144(4):961-2. doi: 10.1016/s0022-5347(17)39632-5.
Milk of calcium renal stone refers to an entity described in connection to a similar condition in gallbladder disease. The intrarenal accumulation of calcium carbonate imitates a calcific density and frequently is located within a caliceal diverticulum or a pyelogenic cyst. Symptomatology, if present, mainly refers to a continuous flank distress but colicky pain complaints are rare. The diagnosis is radiological. The typical impression of a shifting fluid level is apparent when comparing x-rays with the patient in the supine position, and in the upright and lateral projections. When extracorporeal shock waves are applied on this target no fragmentation is achieved. Although the calcium content will account for a difference in acoustical impedance, neither a cleavage nor a fracture plane can be generated within the fluid calcium salt deposits.
肾钙质乳状结石是指一种与胆囊疾病中类似情况相关的病症。肾内碳酸钙的积聚呈现出钙化密度，且常位于肾盏憩室或肾盂源性囊肿内。如果出现症状，主要表现为持续性胁腹不适，但很少有绞痛症状。诊断依靠影像学检查。当对比仰卧位、直立位和侧位X线片时，典型的移动性液平面影像很明显。当对该目标施加体外冲击波时，无法实现结石碎裂。尽管钙含量会导致声阻抗存在差异，但在液态钙盐沉积物内既不能产生解理面也不能产生破裂面。
