RESUMO
PURPOSE: To document the appearance and width of the posterior urethra with transperineal ultrasound (US) before and during voiding in male infants and newborns with posterior urethral valves. MATERIALS AND METHODS: Thirty-three patients with bilateral hydronephrosis underwent prospective transabdominal and transperineal US. RESULTS: Fifteen patients had proved posterior urethral valves (obstructed group); 18 patients had no obstruction (unobstructed group). In the obstructed group, the median posterior urethral width was 4.5 mm before and 10.0 mm during voiding. In the unobstructed group, the median posterior urethral width was 1.0 mm (P = .046) before and 4.0 mm (P < .001) during voiding. Bladder wall thickness was 3.0-7.6 mm (obstructed group) and 2.0-5.0 mm (unobstructed group; P < .001). With a posterior urethral diameter of at least 6 mm during voiding as a criterion for transperineal US diagnosis of obstruction, sensitivity was 100%; specificity, 89%; and positive predictive value, 88%. CONCLUSION: Transperineal voiding US is noninvasive and useful in diagnosing posterior urethral valves.
Assuntos
Uretra/anormalidades , Obstrução Uretral/diagnóstico por imagem , Estudos de Casos e Controles , Anormalidades Congênitas/diagnóstico por imagem , Humanos , Lactente , Recém-Nascido , Masculino , Valor Preditivo dos Testes , Estudos Prospectivos , Sensibilidade e Especificidade , Ultrassonografia , Uretra/diagnóstico por imagem , Obstrução Uretral/etiologia , MicçãoRESUMO
Hypomagnesaemia and acromesomelic dwarfism are both rare inherited disorders. We report the first case of both these conditions occurring in the same patient. Our child and his family pedigree are further evidence that both these diseases are inherited as autosomal recessive conditions. There is no known association between these two diseases.