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45,XO/46,XY in a newborn with the stigmata of Turner syndrome: report of one case. 1990

F F Wu, and T R Wang, and C F Chen, and M H Lin, and C S Hung, and H P Kau, and K H Yang
Department of Pediatrics, Taipei Municipal Women's and Children's Hospital, Taiwan, R.O.C.

A newborn with ambiguous external genitalia and the stigmata of Turner syndrome presented with the following features: short stature, hypertelorism, bilateral epicanthal folds, ptosis, low-set ears with prominent auricles, high-arched palate, low posterior hairline, webbed neck, broad and short chest, widely-spaced and hypoplastic nipples and clitoris-like phallus with hypospasdias. He also had patent ductus arteriosus, the secundum type of atrial septal defect and mitral stenosis. Chromosomes of peripheral blood showed mosaicism of cells with 45,XO/46,XY. An exploratory laparotomy was performed at five months of age. The right side ovotestis-like gonad was removed. The left side gonad in the scrotum was normal. No pathological gonadoblastoma was found.

UI MeSH Term Description Entries
D007231 Infant, Newborn An infant during the first 28 days after birth. Neonate,Newborns,Infants, Newborn,Neonates,Newborn,Newborn Infant,Newborn Infants
D008297 Male Males
D009634 Noonan Syndrome A genetically heterogeneous, multifaceted disorder characterized by short stature, webbed neck, ptosis, skeletal malformations, hypertelorism, hormonal imbalance, CRYPTORCHIDISM, multiple cardiac abnormalities (most commonly including PULMONARY VALVE STENOSIS), and some degree of INTELLECTUAL DISABILITY. The phenotype bears similarities to that of TURNER SYNDROME that occurs only in females and has its basis in a 45, X karyotype abnormality. Noonan syndrome occurs in both males and females with a normal karyotype (46,XX and 46,XY). Mutations in a several genes (PTPN11, KRAS, SOS1, NF1 and RAF1) have been associated the NS phenotype. Mutations in PTPN11 are the most common. LEOPARD SYNDROME, a disorder that has clinical features overlapping those of Noonan Syndrome, is also due to mutations in PTPN11. In addition, there is overlap with the syndrome called neurofibromatosis-Noonan syndrome due to mutations in NF1. Male Turner Syndrome,Turner Syndrome, Male,Familial Turner Syndrome,Female Pseudo-Turner Syndrome,Noonan Syndrome 1,Noonan-Ehmke Syndrome,Pseudo-Ullrich-Turner Syndrome,Turner Phenotype with Normal Karyotype,Turner's Phenotype, Karyotype Normal,Turner's Syndrome, Male,Turner-Like Syndrome,Ullrich-Noonan Syndrome,Female Pseudo Turner Syndrome,Male Turner's Syndrome,Noonan Ehmke Syndrome,Pseudo Ullrich Turner Syndrome,Pseudo-Turner Syndrome, Female,Turner Like Syndrome,Turner Syndrome, Familial,Ullrich Noonan Syndrome
D006061 Gonadal Dysgenesis, 46,XY Defects in the SEX DETERMINATION PROCESS in 46, XY individuals that result in abnormal gonadal development and deficiencies in TESTOSTERONE and subsequently ANTIMULLERIAN HORMONE or other factors required for normal male sex development. This leads to the development of female phenotypes (male to female sex reversal), normal to tall stature, and bilateral streak or dysgenic gonads which are susceptible to GONADAL TISSUE NEOPLASMS. An XY gonadal dysgenesis is associated with structural abnormalities on the Y CHROMOSOME, a mutation in the GENE, SRY, or a mutation in other autosomal genes that are involved in sex determination. Swyer Syndrome,46, XY Gonadal Dysgenesis,46, XY Gonadal Sex Reversal,46,XY Complete Gonadal Dysgenesis,Complete Gonadal Dysgenesis, 46, XY,Gonadal Dysgenesis, 46, XY,Pure Gonadal Dysgenesis 46,XY,Pure Gonadal Dysgenesis, 46, XY,Sex Reversal, Gonadal, 46, XY,XY Pure Gonadal Dysgenesis,Syndrome, Swyer
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000015 Abnormalities, Multiple Congenital abnormalities that affect more than one organ or body structure. Multiple Abnormalities

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