C C6569 Congenital Mesoblastic Nephroma Congenital Mesoblastic Nephroma A low grade childhood congenital malignant neoplasm arising from the kidney. It is characterized by the presence of fibroblastic cells. The majority of cases occur in the first year of life. Complete excision is usually associated with an excellent prognosis. A low grade childhood congenital malignant neoplasm arising from the kidney, which is characterized by the presence of fibroblastic cells. C123907 Childhood Malignant Kidney Tumor C3262 Neoplasm C123272 Pediatric Nephrology Terminology C C78797 Thrombotic Thrombocytopenic Purpura Thrombotic Thrombocytopenic Purpura TTP A coagulation disorder characterized by extensive formation of thrombi in small blood vessels throughout the body due to low levels of ADAMTS13 protein, and resulting in consumption of circulating platelets, which is characterized by thrombocytopenia, anemia, neurologic changes, and sometimes fever and renal dysfunction. A coagulation disorder characterized by extensive formation of thrombi in small blood vessels throughout the body due to low levels of ADAMTS13 protein, and resulting in consumption of circulating platelets, which is characterized by thrombocytopenia, anemia, neurologic changes, and sometimes fever and renal dysfunction. C78787 Purpura C3991 Immune Thrombocytopenia C123272 Pediatric Nephrology Terminology C C123223 Atypical Hemolytic Uremic Syndrome Atypical Hemolytic Uremic Syndrome Non-diarrhea-associated Hemolytic Uremic Syndrome Hemolytic uremic syndrome not associated with shiga toxin-producing enterobacteria. Hemolytic uremic syndrome not associated with shiga toxin-producing enterobacteria. C75545 Hemolytic Uremic Syndrome C123272 Pediatric Nephrology Terminology C C122804 Wilms Tumor-Aniridia-Genitourinary Anomalies-Mental Retardation-Obesity Syndrome WAGRO Syndrome WAGRO|Wilms Tumor, Aniridia, Genitourinary Anomalies, Mental Retardation, and Obesity Syndrome|Wilms Tumor-Aniridia-Genitourinary Anomalies-Mental Retardation-Obesity Syndrome A sub-phenotype of WAGR that includes obesity, and is associated with mutation(s) in the BDNF gene. A condition resembling WAGR (Wilms tumor, aniridia, genitourinary anomalies and developmental delay) syndrome that also includes obesity. This is a contiguous gene syndrome due to deletion in the vicinity of chromosome 11p13-p12 in a region containing the WT1, PAX6 and BDNF genes. C3266 Hereditary Neoplastic Syndrome C123272 Pediatric Nephrology Terminology C C123186 Autosomal Dominant Hypophosphatemia Rickets Autosomal Dominant Hypophosphatemic Rickets Autosomal Dominant Vitamin D-resistant Rickets An autosomal dominant renal phosphate wasting disorder that results in rickets. Hypophosphatemic rickets due to heterozygous mutation(s) in the FGF23 gene, encoding fibroblast growth factor 23, a protein involved in phosphate homeostasis. The altered protein is resistant to cleavage, resulting in elevated FGF23 concentrations; the condition is characterized by isolated renal phosphate wasting, resulting in hypophosphatemia, accompanied by inappropriately normal 1,25-dihydroxyvitamin D (calcitriol) concentrations. C37977 Hypophosphatemia C123272 Pediatric Nephrology Terminology C C123187 Autosomal Recessive Hypophosphatemia Rickets Autosomal Recessive Hypophosphatemic Rickets An autosomal recessive renal phosphate wasting disorder that results in rickets. Hypophosphatemic rickets due to inactivating mutation(s) in the DMP1 gene, encoding dentin matrix acidic phosphoprotein 1, or in the ENPP1 gene, encoding ectonucleotide pyrophosphatase/phosphodiesterase family member 1. The condition is characterized by isolated renal phosphate wasting, hypophosphatemia, and inappropriately normal 1,25-dihydroxyvitamin D (calcitriol) levels. C37977 Hypophosphatemia C123272 Pediatric Nephrology Terminology C C12326 Undescended Testes Cryptorchidism Undescended Testes|Undescended Testicle|Undescended Testis The failure of one or both testes of a male fetus to descend from the abdomen into the scrotum during the late part of pregnancy. If not surgically corrected in early childhood, males may be at increased risk for testicular cancer later in life. The persistent failure of one or both testes to descend into the scrotum. C103185 Congenital Reproductive System Abnormality C27019 Male Reproductive System Disorder C123272 Pediatric Nephrology Terminology C C123260 Dent Disease X-linked Recessive Hypophosphatemic Rickets Dent Disease An X-linked, recessive disorder of the proximal renal tubules that presents during childhood, and is characterized by low-molecular weight proteinuria, hypercalciuria, hypophosphatemia rickets, nephrocalcinosis, nephrolithiasis, and progressive kidney failure. Hypophosphatemic rickets due to mutation(s) in the X-chromosomal CLCN5 gene, encoding H(+)/Cl(-) exchange transporter 5. This condition is expressed in male individuals hemizygous for the mutation(s), and in female individuals homozygous for the mutation(s). The disorder of the proximal renal tubules is characterized by low-molecular weight proteinuria, hypercalciuria, renal phosphate wasting, nephrocalcinosis, nephrolithiasis, progressive kidney failure, and elevated 1,25-dihydroxyvitamin D (calcitriol) concentrations. C3101 Genetic Disorder C123272 Pediatric Nephrology Terminology C C3718 Wilms Tumor-Aniridia-Genitourinary Anomalies-Mental Retardation Syndrome WAGR Syndrome 11p Partial Monosomy Syndrome|Wilms Tumor, Aniridia, Genitourinary Anomalies and Developmental Delay Syndrome|Wilms Tumor-Aniridia-Genitourinary Anomalies-Mental Retardation Syndrome A very rare congenital condition involving the complex of Wilms tumor, aniridia, genitourinary abnormalities, and mental retardation. Wilms Tumor-Aniridia-Genitourinary Anomalies-Mental Retardation (WAGR) syndrome involves deletions of several adjacent genes in chromosome region 11p13. Two or more of the four conditions must be present for an individual to be diagnosed with WAGR Syndrome. The clinical picture varies, depending upon the combination of abnormalities. A syndrome characterized by a predisposition for Wilms tumor, aniridia, genitourinary anomalies, and developmental delay. This is a contiguous gene syndrome due to deletion in the vicinity of chromosome 11p13 in a region containing the WT1 and PAX6 genes. C2950 Chromosomal Abnormality C123272 Pediatric Nephrology Terminology C C113213 Hyperaldosteronism Hyperaldosteronism Aldosteronism Overproduction of aldosterone by the adrenal glands, which may lead to hypokalemia and/or hypernatremia. The condition that results from prolonged exposure to a supranormal concentration of aldosterone, characterized by hypertension, and may include hypokalemia. C3009 Endocrine System Disorder C36292 Laboratory Test Result C123272 Pediatric Nephrology Terminology C C118632 Bardet-Biedl Syndrome Bardet-Biedl Syndrome Laurence-Moon Syndrome|Laurence-Moon-Bardet-Biedl Syndrome|Laurence-Moon-Biedl Syndrome An autosomal recessive inherited syndrome caused by mutations in at least fourteen different genes, called BBS genes. It is characterized by loss of vision, obesity, diabetes, hypertension, hypercholesterolemia, polydactyly, intellectual disability, genital organs abnormalities, and delayed development of motor skills. A collection of autosomal recessive syndromes with similar phenotypes associated with mutations in at least one BBS gene. Clinical characteristics of this genetically heterogenous syndrome may include, but are not limited to, obesity, diabetes, hand anomalies, retinal dystrophy, genital anomalies, developmental delay, hypertension, and hypercholesterolemia. C28193 Syndrome C123272 Pediatric Nephrology Terminology C C122805 Frasier Syndrome Frasier Syndrome A condition, which typically presents during adolescence, that is caused by WT-1 mutation, and is characterized by a developmental sex disorder, FSGS, and may be associated with gonadoblastoma. A Wilms tumor 1 gene syndrome caused by a mutation in an intron of the WT1 gene that removes an alternative splice site resulting in loss of one isoform of the Wilms tumor protein. This condition is characterized by focal segmental glomerulosclerosis, gonadal dysgenesis resulting in atypical genital and reproductive tract development in male infants, and a high risk for the development of gonadoblastoma. C28193 Syndrome C123272 Pediatric Nephrology Terminology C C123251 Pseudohypoaldosteronism Type 1 Pseudohypoaldosteronism Type 1 PHA1B|Pseudohypoaldosteronism Type I Autosomal Recessive A hereditary, heterogeneous disorder of electrolyte metabolism that is characterized by renal resistance to aldosterone action, resulting in salt wasting, hypotension, hyperkalemia, and metabolic acidosis. An autosomal recessive condition presenting with hyponatremia and hyperkalemia, which mimics low concentrations of aldosterone, and which is associated with loss-of-function mutation(s) in the SCNN1A, SCNN1B, or SCNN1G genes encoding subunits of the epithelial sodium channel (ENaC). C85034 Pseudohypoaldosteronism C123272 Pediatric Nephrology Terminology C C123262 Familial Hypocalciuric Hypercalcemia Familial Hypocalciuric Hypercalcemia Familial Benign Hypercalcemia A hereditary condition caused by calcium sensing receptor gene mutations, resulting in calcium-hyposensitivity, and compensatory hypercalcemia and hypocalciuria. Familial hypocalciuric hypercalcemia types 1,2, and 3 are a group of autosomal dominant conditions due to loss of function mutation(s) of the CASR, GNA11, and AP2S1 genes, respectively. These genes encode the extracellular calcium-sensing receptor, the guanine nucleotide-binding protein subunit alpha-11, and the AP-2 complex subunit sigma. The condition is characterized by inappropriately low urinary calcium excretion and parathyroid hormone concentration in the presence of mild hypercalcemia. C3101 Genetic Disorder C123272 Pediatric Nephrology Terminology C C3105 Von Hippel-Lindau Syndrome Von Hippel-Lindau Syndrome Von Hippel-Lindau Disease An inherited familial cancer syndrome which is characterized by development of capillary hemangioblastomas of the central nervous system and retina; clear cell renal carcinoma; pheochromocytoma; pancreatic tumors; and inner ear tumors. The syndrome is associated with germline mutations of the VHL tumor suppressor gene, located on chromosome 3p25-26. Symptoms of VHL syndrome may not be apparent until the third decade of life. CNS hemangioblastoma is the most common cause of death, followed by clear cell renal cell carcinoma. --2004 An autosomal dominant multiple neoplasia syndrome caused by germline mutations of the VHL gene, encoding the protein von Hippel-Lindau tumor suppressor (pVHL). The condition is characterized by development of capillary hemangioblastomas of the central nervous system and retina, clear cell renal carcinoma, pheochromocytoma, pancreatic tumors, and inner ear tumors (endolymphatic sac tumors). C84348 Phakomatosis C123272 Pediatric Nephrology Terminology C C84668 Denys-Drash Syndrome Denys-Drash Syndrome Nephrotic Syndrome Type 4 A rare congenital syndrome caused by mutations in the WT1 gene. It is characterized by the presence of congenital nephropathy (diffuse mesangial sclerosis), Wilms tumor, and intersex disorders. A Wilms tumor 1 gene syndrome caused by various point mutation(s) affecting the zinc finger(s) of the Wilms tumor protein. This syndrome is characterized by congenital nephropathy (diffuse mesangial sclerosis), gonadal dysgenesis resulting in atypical genital and reproductive tract development in male infants, and high risk for development of Wilms tumor, an embryonal neoplasm defined by the presence of epithelial, mesenchymal, and blastema components. C28193 Syndrome C123272 Pediatric Nephrology Terminology C C84919 Nephrogenic Diabetes Insipidus Nephrogenic Diabetes Insipidus Diabetes insipidus caused by insensitivity of the kidneys to antidiuretic hormone. Diabetes insipidus caused by insensitivity of the kidneys to antidiuretic hormone (vasopressin), which is caused by mutation(s) in the AVPR2 gene, encoding the vasopressin V2 receptor (antidiuretic hormone receptor), or by mutation(s) in the AQP2 gene, encoding aquaporin-2. Inheritance may by X-linked (AVPR2) or autosomal dominant or recessive (AQP2). C43263 Diabetes Insipidus C123272 Pediatric Nephrology Terminology C C85232 Williams Syndrome Williams Syndrome Williams-Beuren Syndrome A rare syndrome caused by multiple gene deletions from a region of chromosome 7, including the deletion of CLIP2, ELN, GTF2I, GTF2IRD1 and LIMK1 genes. It is characterized by distinctive facial appearance (elfin facies), mild-to-moderate mental retardation, cheerfulness, cardiovascular abnormalities and infantile hypercalcemia. A syndrome caused by multiple gene deletions from a region of chromosome 7, including the deletion of CLIP2, ELN, GTF2I, GTF2IRD1, and LIMK1 genes, and characterized by distinctive facial appearance (elfin facies), mild-to-moderate developmental delay, cheerfulness, cardiovascular dysfunction which may include supravalvular aortic stenosis, and endocrine abnormalities, including precocious puberty, hypothyroidism, and infantile hypercalcemia/ hypercalciuria. C3101 Genetic Disorder C123272 Pediatric Nephrology Terminology C C75545 Hemolytic Uremic Syndrome Hemolytic Uremic Syndrome HUS|Hemolytic-Uremic Syndrome Acute kidney injury associated with microangiopathic hemolytic anemia and thrombocytopenia. Acute kidney injury associated with microangiopathic hemolytic anemia and thrombocytopenia. C26323 Hematologic Disorder C123272 Pediatric Nephrology Terminology