Browsing by Author "Soares, Ana Rita"
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- Ambiguous Genitalia: An Unexpected Diagnosis in a NewbornPublication . Losa, Ana; Da Silva Cardoso, Juliana; Leite, Sara; Barros, Ana Cristina; Guedes, Ana; Rodrigues, Cidade; Borges, Teresa; Oliva-Teles, Natália; Soares, Ana Rita; Mota, CéuAlterations in gonad formation or function can lead to congenital conditions in which chromosomal, gonadal, or anatomical sex is atypical. These conditions are referred to as disorders of sex development (DSD) and have a heterogeneous etiology. The assessment of these children by a multidisciplinary team is crucial for an accurate diagnosis and should be initiated promptly due to the potentially life-threatening nature of congenital adrenal hyperplasia, a common cause of DSD. We present a neonate born at 39 weeks with a weak cry, slight hypotonia, poor suction reflex, peculiar facies, and ambiguous genitalia. From the study carried out, the abdominopelvic ultrasound revealed a nodular structure compatible with the left gonad. Aneuploidy screening confirmed the presence of the Y chromosome. Additionally, normal endocrinological studies and the karyotype showed a genotype compatible with cri-du-chat syndrome with partial trisomy of chromosome 3. Children with cri-du-chat syndrome characteristically exhibit a cat-like cry and distinctive facial features, along with developmental delay and intellectual disability. Duplication of 3p is a rare genetic disorder, usually associated with other chromosomal anomalies and congenital malformations, namely, of the genitals
- Genes, Children and PediatriciansPublication . Coelho, Margarida Paiva; Soares, Ana Rita; Magalhães, Catarina; Martins, Esmeralda
- Hyperinsulinaemic Hypoglycaemia and Polycystic Kidney Disease – A Rare Case Concerning PMM2 Gene PleiotropyPublication . Borges, Teresa; Fortuna, Ana; Faria, Maria Do Sameiro; Oliveira, Maria João; Freitas, Joana; Santos Silva, Ermelinda; Quelhas, D; Figueiredo, Catarina Matos; Soares, Ana RitaCo-occurrence of hyperinsulinaemic hypoglycaemia and polycystic kidney disease (HIPKD) has been recently described. It is caused by a non-coding variant in the promoter region for phosphomannomutase 2 (PMM2), c.-167G>T, both in homozygous or compound heterozygous variants with deleterious coding. Although PMM2 has been associated with congenital disorder of glycosylation, patients do not present with this phenotype and have normal carbohydrate-deficient transferring testing. The authors present a rare case where specific PMM2 study was performed as a result of clinical suspicions. The patient was a 6-year-old female followed at our clinic due to congenital hyperinsulinism since she was 1 month old. She also presented with bilateral polycystic kidneys, detected in prenatal set, and simple hepatic cysts, for which she was treated with diazoxide and captopril. Initial metabolic and genetic studies were normal. PMM2 gene sequence study revealed the promotor variant c.-167G>T in compound heterozygosity with the previously described pathogenic variant c.422G>A (p.Arg141His), confirming the diagnosis of HIPKD. This is a notable case as it highlights the importance of keeping this diagnostic hypothesis in mind and serves as a reminder to perform proper clinical and genetic investigation. A correct, and early, diagnosis will avoid unnecessary additional investigations and will allow appropriate genetic counselling for this autosomal recessive disorder.
- Ultrasound relevance in prenatal diagnosis of VACTERL association – Two clinical casesPublication . Felix, Joana; Moreira Barros, Joana; Soares, Ana Rita; Soares, Fatima; Nogueira, Rosete; Silva, Pedro TiagoVATER is a nonrandom association of congenital defects with common developmental pathogenesis including/which includes malformations like vertebral defects, anal atresia or imperforate anus, tracheoesophageal fistula with esophageal atresia, and radial or renal dysplasia. VATER acronym was initially used to describe this association, but other malformations, like cardiac defects and limb anomalies, were later also considered cardinal features and included, changing the acronym to VACTERL. Although few cases have been reported, VATER/VACTERL spectrum association can be detected in first-trimester ultrasound. Herein, the authors describe two cases of VATER/VACTERL association suspected during the 12-week ultrasound and confirmed in anatomopathological study. Prenatal VACTERL association diagnosis is challenging and rarely detected in the first pregnancy trimester. It requires skill and experience to interpret ultrasound findings and some features are difficult to recognize before birth. Early diagnosis is important for parental counselling and delivery planning. Management options include medical pregnancy termination and delivery in a tertiary center to improve outcomes.
- Usher syndrome and Nebulin‐associated myopathy in a single patient due to variants in MYO7A and NEBPublication . Maia, N; Soares, Ana Rita; Fortuna, Ana; Marques, Isabel; Gonçalves, Ana; Santos, Rosário; Pires, Manuel; De Brouwer, Arjan; Jorge, PaulaIn a patient with Usher syndrome and atypical muscle complaints, we have identified two separate variants in MYO7A andNEB genes by exome sequencing. The homozygous variants in these two recessive genes could explain the full phenotype of our patient.