RESUMEN Se presentan 2 casos de acidosis tubular renal de tipo distal, a propdsito de los cuales se caracteriza la enfermedad y se comentan las po~ sibilidades terapeuticas. REFERENCIAS 1.— Allbright F.; Burnett CH Parson, W. Reifenstein EC; Roos A. Osteomalacia and late rickets. Medicine 25: 399, 1946. 2.—Lightwood, R; Payne W. W.; Black, J. A, Infantile renal acidosis Pediatrics 12: 628, 1953. 3.— Rodriguez Soriano, J.; Boichis, H.; Stark, H.; Edel-mann, C. M. Proximal Renal Tubular. Acidosis = a defect in bicarbonate reabsorption. Pediat Res. 1: 81, 1967. 4.— Rodriguez Soriano, J.; Boichis, H.; Edeimann, C. Bicarbonate reabsorption and Hydrogen ion excretion in children with renal tubular acidosis. J. of Pediat. 71: 802, 1967. 5.— Edeimann, C M.; Boichis, H.; Rodriguez Soriano, J.; Stark, H. The renal response of children to acute ammonium chloride acidosis. Pediat Res. 1: 452, 1967. 6.— Broyer, M.; Proesmans, W.; Royer, P. La titration des bicarbonates chez 1'enfant normal au cours de diverses nephropathies. Rev. Franc. Etud Clin. Biol. 14: 556, 1969. 7.— Morris, Re. Renal Tubular Acidosis. Mechanism, classification and implications. New Eng. J. Med. 281: 1405, 1969. 8.— Royer, P.; Broyer, M. L'acidose renale au cours des tubulapathies cong^nitales. Actualites Nephro-logiques de l'Hopital Necker. Editions Medicales Flammarion. Paris, 1967. 9.— Toursel, F. Exploration de la founction renale d' acidification par les epreuves de surchage acide chez 1'enfant. Rev. de Pediat: 8: 115, 1972. 10.— Rodriguez Soriano, J. The renal regulation of aci-de-base. Balance and the disturbances noted in renal tubular acidosis. Pediat Clin, of North America 18: 529, 1971. 11.— Straiiss, M. B.; Welt, L. G. Enfermedades del rin6n. El Ateneo, Buenos Aires, 1966. 12.— Royer, P.; Mathieu, M.; Habib, R. Problemas actuates de Nefrologia infantil. Ediciones Torey. Barcelona, 1965. 13.— Maccioni, A.; Saitua, M. T.; Oxman, S. Mecanis-mos renales y extrarrenales de compensaci6n en un caso de acidosis tubular cronica idiopatica. Rev. Chilena de Pediat. 39: 395, 1968. 14.— Dundon, Sheamus. Treatment of osteomalacia of renal tubular acidosis. Lancet 2: 1204, 1972. 15.— Stickler, G. B.; Bergen, B. J. A review: Short stature in renal disease. Pediat. Res. 7: 978, 1973. 16.— Richards, P.; Chamberlain, M. J.; Wrong, O. M. Treatment of osteomalacia of renal tubular acidosis by sodium bicarbonate alone. Lancet 2: 994, 1972. 17.—-Lin, S.; Chan, J. C. M. Classical (distal) renal tubular acidosis: endogenous acid production. Pediat. Res. 8: 457, 1974. 18._ Farrell, R. M.; Horwith, M.; Muecke, E. C. Renal tubular acidosis and nephrocalcinosis diagnosis and clinical management. J. of Urol. 11: 429, 1974. 19.— Heidbieder, E.; Heuriemann, H.; Heidland, A.; Krempien, B. K. Treatment of renal tubular acidosis and osteomalacia by salidiuretics. Lancet 1: 52, 1973. 20.— Guigard, J. P.; Torrado, A. Proximal renal tubular acidosis in vitamin D. Deficiency rickets. Acta Pediat. Scand. 62: 543, 1973. 21.— Rampini, S.; Fanconi, A.; Illig, R.; Prader, A. Effect of hydrochlorothiazide on proximal renal tubular acidosis in a patient with idiopathic "de Toni-Debre" Fanconi syndrome". Helv. Paediat. Acta 23: 13, 1968. 22.— Kurtzman, N. A. Regulation of renal bicarbonate reabsorption by extracellular volumen J. of Clin. Invest. 49: 586, 1970.