RT Journal Article RT Generic T1 A rare cause of nephrocalcinosis in an infant: Answers. A1 Nieto-Vega, Francisco Antonio A1 Martin-Masot, Rafael A1 Rodriguez-Azor, Begoña A1 Martinez-Rivera, Veronica A1 Herrador-Lopez, Marta A1 Navas-Lopez, Victor Manuel K1 Nephrocalcinosis K1 Nephrolithiasis K1 Hyperoxaluria K1 Hyperparathyroidism K1 Celiac disease K1 Malabsorption syndrome AB Hyperoxaluria can be divided into two categories: primary and secondary. Primary hyperoxaluria is the result of an inherited hepatic enzyme deficiency leading to an increased endogenous production of oxalate, and usually exhibits excessively high urine oxalate levels. On the other hand, secondary hyperoxaluria is due to an increased intestinal absorption of oxalate and usually presents with mildly or moderately high urine oxalate levels. Examples of conditions associated with secondary hyperoxaluria are a high-oxalate diet, or conditions associated with fat malabsorption. Given the moderate hyperoxaluria, and the gastrointestinal symptoms referred to in our patient, a secondary cause of hyperoxaluria was suspected PB Springer YR 2020 FD 2020-06-04 LK http://hdl.handle.net/10668/15830 UL http://hdl.handle.net/10668/15830 LA en NO Nieto-Vega FA, Martín-Masot R, Rodríguez-Azor B, Martínez-Rivera V, Herrador-López M, Navas-López VM. A rare cause of nephrocalcinosis in an infant: Answers. Pediatr Nephrol. 2021 Jan;36(1):79-81. doi: 10.1007/s00467-020-04615-2. Epub 2020 Jun 4. Erratum in: Pediatr Nephrol. 2021 Jan;36(1):213 DS RISalud RD Apr 4, 2025