The patient was a 70-year-old male. The grade of severe motor and intellectual disabilities (SMID) was evaluated as 6 according to Oshima’s classification. He was hospitalized due to cerebral palsy and incomplete paralysis/contracture of the bilateral lower limbs. On April X-4 (at the age of 66 years), ultrasonic bone density testing of the calcaneus bone showed a marked decrease in the bone mineral density. To prevent fracture, the administration of a vitamin D preparation was started. On July 1, X (at the age of 70 years), high fever occurred. Various examinations led to a diagnosis of complicated pyelonephritis due to left hydronephrosis caused by (upper, middle and lower) ureteral stones, and bilateral renal small calculi. Fluid and antibiotic therapies resulted in pyretolysis. The patient was referred to a department of urology for aggressive lithotripsy, but it was impossible due to body movement restrictions. Treatment was scheduled later at an institution that has an extracorporeal shock wave lithotripter. During the waiting period, from July 10 the patient was instructed to drink water, and a sodium citrate/potassium preparation (2.0 g/day) was administered. Two weeks later, left lower ureteral stones were excreted, and hydronephrosis and urinary tract infection improved. After 10 months, only a left distal ureter stone had decreased in size, slight hydronephrosis remained, and bilateral small calculi were decreased in number and size. Treatment is being continued to eliminate the stone. In Japan, the incidence of urolithiasis in aged population increase, and the risk of stones may increase in this population as elderly individuals may be often administered vitamin D to prevent osteoporosis. Patients with SMID may benefit from water intake and administration of citric acid as initial treatment options for stone disease as many of them may not tolerate aggressive treatments.
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