PMID- 10069709 OWN - NLM STAT- MEDLINE DCOM- 19990517 LR - 20131121 IS - 0148-7299 (Print) IS - 0148-7299 (Linking) VI - 82 IP - 5 DP - 1999 Feb 19 TI - Clinical spectrum of infantile free sialic acid storage disease. PG - 385-91 AB - Infantile free sialic acid storage disease (ISSD) is a rare autosomal recessive metabolic disorder caused by a lysosomal membrane transport defect, resulting in accumulation of free sialic acid within lysosomes. Only a few cases have been described. We report on three new cases of ISSD with different modes of presentation: an infant with nephrotic syndrome, a case of fetal and neonatal ascites with heart failure, and a case of fetal ascites with esophageal atresia type III. From these patients and a review of the literature (27 cases total) we draw the following conclusions. 1) "Coarse facies," fair complexion, hepatosplenomegaly, and severe psychomotor retardation are constant findings in this disorder. 2) Nephrotic syndrome occurred in most cases (four in seven) in which renal evaluation was performed. Therefore, ISSD is an important cause of nephrosis in infants with a storage disorder phenotype. 3) Fetal/neonatal ascites or hydrops was the mode of presentation in 13 (60%) of 21 cases. Thus, ISSD enters in the differential diagnosis of hydrops fetalis with a storage disease phenotype. 4) Cardiomegaly was evident in nine cases. 5) Corneae were always clear, and albinoid fundi were reported in five cases. 6) Dysostosis multiplex was not prominent. 7) Bone marrow aspiration could be negative. 8) Death ensued in early infancy with a mean age of 13.1 months. All reported deaths were caused by respiratory infections. FAU - Lemyre, E AU - Lemyre E AD - Medical Genetics Service, Department of Pediatrics, Hopital Sainte-Justine, Universite de Montreal, Quebec, Canada. FAU - Russo, P AU - Russo P FAU - Melancon, S B AU - Melancon SB FAU - Gagne, R AU - Gagne R FAU - Potier, M AU - Potier M FAU - Lambert, M AU - Lambert M LA - eng PT - Case Reports PT - Journal Article PT - Review PL - United States TA - Am J Med Genet JT - American journal of medical genetics JID - 7708900 RN - GZP2782OP0 (N-Acetylneuraminic Acid) SB - IM MH - Ascites/congenital/diagnosis MH - Esophageal Atresia/diagnosis MH - Female MH - Fetal Diseases/*diagnosis MH - Heart Failure/congenital/diagnosis MH - Humans MH - Hydrops Fetalis/diagnosis MH - Infant MH - Infant, Newborn MH - Lysosomal Storage Diseases/*diagnosis/genetics/pathology MH - Male MH - N-Acetylneuraminic Acid/*metabolism/urine MH - Nephrotic Syndrome/diagnosis RF - 31 EDAT- 1999/03/09 03:01 MHDA- 2000/06/20 09:00 CRDT- 1999/03/09 03:01 PHST- 1999/03/09 03:01 [pubmed] PHST- 2000/06/20 09:00 [medline] PHST- 1999/03/09 03:01 [entrez] AID - 10.1002/(SICI)1096-8628(19990219)82:5<385::AID-AJMG6>3.0.CO;2-3 [pii] PST - ppublish SO - Am J Med Genet. 1999 Feb 19;82(5):385-91.