Intestinal ultrasound in pediatrics. / Ecografía intestinal en pediatría.

Ultrasonography is the imaging technique of choice for studying the digestive tract in pediatric patients from the neonatal period to adolescence. Its dynamic character, absence of radiation, and scant preparation required make ultrasonography preferable to contrast-enhanced fluoroscopy, computed tomography, or magnetic resonance imaging. Technical advances in ultrasound, including high-resolution multifrequency probes, panoramic studies, color Doppler, Doppler with microvascularization, elastography, and contrast agents for use in children, have increased the sensitivity and specificity of this technique. Intestinal ultrasound is indicated for conditions with diverse etiologies and pathogenesis: congenital, infectious, inflammatory, tumor-related, and vascular. Knowledge of embryological development and the normal characteristics of the digestive tract help in identifying, recognizing, and interpreting the ultrasound findings of the different conditions in pediatric patients. This paper aims to show the indications for ultrasound studies of the digestive tract in children, the findings on these studies, and the management of the most common gastrointestinal conditions in pediatric patients.

Fractura lineal de cráneo en el lactante con traumatismo craneoencefálico leve: influencia de la tomografía computarizada en su manejo / Linear skull fracture in infants after mild traumatic brain injury: influence of computed tomography in management

INTRODUCCIÓN: El traumatismo craneoencefálico (TCE) constituye un motivo frecuente de consulta en urgencias pediátricas. La necesidad de intervención quirúrgica en pacientes menores de 2 años con TCE leve es mínima, pero los hallazgos intracraneales pueden influir en el manejo del paciente. El objetivo de este trabajo es valorar el impacto de la TC en el manejo de los niños menores de 2 años con TCE leve que presentan una fractura lineal de cráneo en la radiografía convencional. MATERIAL Y MÉTODOS: Estudio descriptivo y retrospectivo en el que se analizan las radiografías de cráneo practicadas a pacientes menores de 2 años que fueron atendidos en el área de urgencias de nuestro hospital de nivel terciario por TCE leve en un período de 4 años. RESULTADOS: Se realizaron 88 exploraciones de tomografía computarizada (TC) realizadas por sospecha de fractura lineal de cráneo en radiografía. Se confirmó la fractura en 74 de ellos (16% de falsos positivos). De los 74 niños con diagnóstico confirmado de fractura, la TC fue normal en el 92% de los estudios y mostró hallazgos intracraneales en 6 casos (8% de los casos con fractura). Dos casos requirieron ingreso superior a 2 días (2,7% de todos los casos con fractura) y en los 4 casos restantes la estancia hospitalaria no superó las 48 horas. En ningún caso se requirió cirugía. CONCLUSIÓN: No parece justificada la realización de una TC craneal de forma sistemática en niños menores de 2 años con TCE y bajo/intermedio riesgo de lesión intracraneal, incluso con fractura lineal de cráneo. En ausencia de factores de riesgo, proponemos individualizar el estudio de imagen basándose en el criterio clínico

INTRODUCTION: Traumatic brain injury (TBI) is a common reason for pediatric emergency room visits. Surgical intervention for mild TBI is rarely necessary in children aged <2 years, but the intracranial findings can influence the management of the patient. This paper aims to evaluate the impact of computed tomography (CT) in the management of children aged <2 years with mild TBI and linear skull fractures on plain-film X-rays. MATERIAL AND METHODS: This retrospective descriptive study analyzed skull X-rays obtained in children <2 years old attended for mild TBI in the emergency room of our tertiary hospital over a 4-year period. RESULTS: A total of 88 CT studies were done for suspicion of linear skull fractures on plain-film X-rays. Fractures were confirmed in 74, representing a false-positive rate of 16%. Of the 74 infants with confirmed fractures, intracranial CT findings were normal in 68 (92%) and abnormal in 6 (8%). Two patients (2.7% of all patients with confirmed fractures) required hospital stays longer than 2 days; the other four patients with abnormal intracranial findings were discharged within 48hours of admission. None of the cases required surgery. CONCLUSION: Systematic CT studies do not seem justified for all children aged <2 years with TBI and low/intermediate risk of intracranial lesions, even when they have linear skull fractures. In the absence of risk factors, we propose individualizing the imaging study based on clinical criteria

Linear skull fracture in infants after mild traumatic brain injury: influence of computed tomography in management. / Fractura lineal de cráneo en el lactante con traumatismo craneoencefálico leve: influencia de la tomografía computarizada en su manejo.

INTRODUCTION: Traumatic brain injury (TBI) is a common reason for pediatric emergency room visits. Surgical intervention for mild TBI is rarely necessary in children aged <2 years, but the intracranial findings can influence the management of the patient. This paper aims to evaluate the impact of computed tomography (CT) in the management of children aged <2 years with mild TBI and linear skull fractures on plain-film X-rays. MATERIAL AND METHODS: This retrospective descriptive study analyzed skull X-rays obtained in children <2 years old attended for mild TBI in the emergency room of our tertiary hospital over a 4-year period. RESULTS: A total of 88 CT studies were done for suspicion of linear skull fractures on plain-film X-rays. Fractures were confirmed in 74, representing a false-positive rate of 16%. Of the 74 infants with confirmed fractures, intracranial CT findings were normal in 68 (92%) and abnormal in 6 (8%). Two patients (2.7% of all patients with confirmed fractures) required hospital stays longer than 2 days; the other four patients with abnormal intracranial findings were discharged within 48hours of admission. None of the cases required surgery. CONCLUSION: Systematic CT studies do not seem justified for all children aged <2 years with TBI and low/intermediate risk of intracranial lesions, even when they have linear skull fractures. In the absence of risk factors, we propose individualizing the imaging study based on clinical criteria.

Intrapericardial diaphragmatic hernia following cardiac surgery - A case report. / Hernia diafragmática intrapericárdica tras cirugía cardiaca. A propósito de un caso.

INTRODUCTION: Intrapericardial diaphragmatic hernia is an abdominal organ prolapse inside the pericardium. It is one of the less frequent instances within the diaphragmatic hernia group. CLINICAL CASE: This is the case of a 4-month-old infant undergoing surgery for interventricular communication (IVC). Postoperatively, pulmonary auscultation detected air-fluid sounds, and thoracic radiological control showed an atypical pneumopericardium. Given clinical and radiological findings, and in the absence of additional abdominal symptoms, gastrointestinal transit (GIT) was performed, demonstrating intrapericardial herniation of the intestinal loops. The patient was discharged following abdominal surgical repair, with no further complications. DISCUSSION: Intrapericardial diaphragmatic hernia is an infrequent instance within the diaphragmatic hernia group, with cardiac surgery being a rare potential iatrogenic factor. Clinical suspicion and imaging findings are key to perform early diagnosis and surgical treatment.

INTRODUCCION: La hernia diafragmática intrapericárdica consiste en un prolapso de las estructuras abdominales dentro del pericardio, representando una de las entidades menos frecuentes dentro del conjunto de las hernias diafragmáticas. CASO CLINICO: Se presenta el caso de un lactante de 4 meses intervenido de comunicación interventricular (CIV) que, en el postoperatorio, la auscultación cardiopulmonar detecta ruidos hidroaéreos y el control radiológico de tórax muestra un neumopericardio atípico. Ante los hallazgos clínico-radiológicos, y sin sintomatología abdominal sobreañadida objetivable, se solicita un tránsito gastrointestinal (TGI) donde se pone de manifiesto la herniación intrapericárdica de asas intestinales. Tras la intervención quirúrgica abdominal reparadora, el paciente fue dado de alta, sin otras complicaciones. COMENTARIOS: Se realiza un breve recordatorio de las hernias diafragmáticas intrapericárdicas como una entidad de escasa incidencia dentro del conjunto de hernias diafragmáticas, siendo la cirugía cardiaca un posible factor iatrogénico poco frecuente. La sospecha clínica, junto con los hallazgos de imagen, son fundamentales para llegar a un diagnóstico y tratamiento quirúrgico precoz.

Hernia diafragmática intrapericárdica tras cirugía cardiaca. A propósito de un caso / Intrapericardial diaphragmatic hernia following cardiac surgery - A case report

Introducción: La hernia diafragmática intrapericárdica consiste en un prolapso de las estructuras abdominales dentro del pericardio, representando una de las entidades menos frecuentes dentro del conjunto de las hernias diafragmáticas. Caso clínico: Se presenta el caso de un lactante de 4 meses intervenido de comunicación interventricular (CIV) que, en el postoperatorio, la auscultación cardiopulmonar detecta ruidos hidroaéreos y el control radiológico de tórax muestra un neumopericardio atípico. Ante los hallazgos clínico-radiológicos, y sin sintomatología abdominal sobreañadida objetivable, se solicita un tránsito gastrointestinal (TGI) donde se pone de manifiesto la herniación intrapericárdica de asas intestinales. Tras la intervención quirúrgica abdominal reparadora, el paciente fue dado de alta, sin otras complicaciones. Comentarios: Se realiza un breve recordatorio de las hernias diafragmáticas intrapericárdicas como una entidad de escasa incidencia dentro del conjunto de hernias diafragmáticas, siendo la cirugía cardiaca un posible factor iatrogénico poco frecuente. La sospecha clínica, junto con los hallazgos de imagen, son fundamentales para llegar a un diagnóstico y tratamiento quirúrgico precoz

Introduction: Intrapericardial diaphragmatic hernia is an abdomi-nal organ prolapse inside the pericardium. It is one of the less frequent instances within the diaphragmatic hernia group. Clinical Case: This is the case of a 4-month-old infant undergo-ing surgery for interventricular communication (IVC). Postoperatively, pulmonary auscultation detected air-fluid sounds, and thoracic radiologi-cal control showed an atypical pneumopericardium. Given clinical and radiological findings, and in the absence of additional abdominal symptoms, gastrointestinal transit (GIT) was performed, demonstrating intra-pericardial herniation of the intestinal loops. The patient was discharged following abdominal surgical repair, with no further complications. Discussion: Intrapericardial diaphragmatic hernia is an infrequent instance within the diaphragmatic hernia group, with cardiac surgery being a rare potential iatrogenic factor. Clinical suspicion and imag-ing findings are key to perform early diagnosis and surgical treatment

El vólvulo gástrico en la edad pediátrica: ¿cuándo sospecharlo y cómo manejarlo? / Gastric volvulus in children: when to suspect and how to manage

INTRODUCCIÓN Y OBJETIVO: El vólvulo gástrico es una entidad que puede manifestarse con un amplio espectro clínico, lo que puede llevar a un retraso en el diagnóstico y tratamiento. El objetivo de nuestro trabajo es definir los tipos de vólvulo gástrico, analizando los factores predisponentes, la clínica, los hallazgos radiológicos y el tratamiento de cada uno de ellos. MATERIAL Y MÉTODOS: Se realizó un estudio descriptivo retrospectivo de los vólvulos gástricos diagnosticados en un hospital terciario durante un periodo de 10 años (2006-2016). Se incluyeron 32 pacientes, que se clasificaron en tres grupos en función de la presentación clínica: 7 con la forma aguda, 12 con la forma crónica y 13 con la forma neonatal-lactante. Se recogieron datos epidemiológicos, clínicos, diagnósticos y de manejo de cada caso. RESULTADOS: El vólvulo gástrico órgano-axial fue el subtipo más frecuente al analizar la totalidad de los pacientes (81%), aunque en la presentación aguda el más prevalente fue el mesentérico-axial (86%). En la forma aguda, la clínica más frecuente fue los vómitos no biliosos (86%), siendo en la forma crónica la sintomatología más variada. El diagnóstico se realizó con tránsito gastroduodenal en la mayoría de los casos. Las opciones de tratamiento fueron cirugía o medidas conservadoras, en función del tipo de vólvulo gástrico. CONCLUSIONES: Existen distintas formas de presentación del vólvulo gástrico (aguda, crónica, neonatal-lactante), cada una con una sintomatología y manejo diferentes. Dada la clínica inespecífica, es importante conocer los factores predisponentes y los hallazgos que aumentan su sospecha en la radiografía. La prueba de elección para su diagnóstico es el tránsito gastroduodenal

INTRODUCTION AND OBJECTIVE: Gastric volvulus is an entity with a broad clinical spectrum, which can lead to a delay in diagnosis and treatment. The purpose of this study is to define the types of gastric volvulus, analyzing the predisposing factors, clinical, radiological findings and treatment of each one. MATERIALS AND METHODS: A retrospective, descriptive study of the gastric volvulus diagnosed at a tertiary hospital was carried out during a period of 10 years (2006-2016). Thirty-two patients were included, which were classified into three groups according to the clinical presentation: 7 with the acute form, 12 with the chronic form and 13 with the neonatal form. Epidemiological, clinical, diagnostic and management data were collected for each case. RESULTS: Organo-axial gastric volvulus was the most frequent subtype of all the sample (81%), although in the acute presentation, the most prevalent subtype was the mesentero-axial (86%). In the acute form, the most common symptom was non-bilious vomiting (86%), whereas in the chronic form the clinical presentation was more varied. The diagnosis was made with upper gastrointestinal series in most cases. Surgical or conservative treatment were chosen depending on the type of gastric volvulus. CONCLUSIONS: There are different forms of presentation of gastric volvulus (acute, chronic, neonatal), with different clinical features and implications with respect to treatment options. Due to its nonspecific clinical presentation, it is important to know the predisposing factors and the common radiological findings highly suggestive of the diagnosis. An upper gastrointestinal series is the study of choice for its diagnosis

Masa torácica congénita: hemangioma capilar pulmonar, un diagnóstico inusual / Congenital lung mass: Pulmonary hemangioma, an unusual diagnosis

Introducción: Las masas pulmonares congénitas (MPC) presentan una incidencia de 27-33/100.000 habitantes. El diagnóstico varía en función de la sintomatología, la localización y la magnitud de la lesión. La causa más frecuente de MPC son las alteraciones del desa-rrollo de la vía respiratoria, pero en las que no cumplan las características radiológicas debe considerarse el hemangioma pulmonar. Caso clínico: Neonato con hemangioma capilar pulmonar congénito. Se revisan los casos de hemangiomas pulmonares en menores de 1 año publicados en la literatura hasta 2015. Resultados: Se identificaron 6 casos. La sintomatología más frecuente fue la dificultad respiratoria. En todos los casos se realizó una tomografía computarizada pulmonar, que mostraba una masa isodensa en 5 de los 6 casos. Un caso fue estudiado mediante resonancia magnética (RM) con isoseñal al músculo en T1, e hiperintensa en T2. Se procedió a una exéresis quirúrgica en 5 de los 6 casos, el restante recibió tratamiento con propranolol con buen resultado. Conclusiones: Los hemangiomas intratorácicos son inusuales y suelen presentarse como una masa sólida única isodensa en la radiografía. En la ecografía se observan como áreas heterogéneas con vasos visibles y calcificaciones. Consideramos la RM con gadolinio la prueba estándar de referencia para el estudio de las MPC. Los hemangiomas congénitos (HC) se presentan en la RM como masas bien delimitadas hiperintensas en T2, isointensas en T1 y con realce tras gadolinio. La evolución de los HC es impredecible y pueden presentar una resolución completa. El tratamiento debe estar supeditado a la clínica del paciente, y podría considerarse añadir propranolol a las opciones quirúrgicas, aunque es necesaria la comunicación de nuevos casos para valorar su eficacia. Si se procede a la exéresis, el estudio histopatológico con positividad para marcadores CD31 y CD34 y negatividad para GLUT-1 confirmará el diagnóstico (AU)

Introduction: Congenital pulmonary masses (CPM) have an incidence of 27-33/100,000. Timing of diagnosis depends on the sym-ptoms, location and size of the lesion. The most commonly cause are developmental abnormalities of the pulmonary airways and vasculature, but pulmonary hemangioma can occur as a single asymptomatic solid mass. Case report: A case of MPC is presented with a final diagnosis of congenital pulmonary capillary hemangioma. Pulmonary heman-giomas in infants published in English literature until 2015 are reviewed and analyzed. Results: 6 cases were identified. The most common symptoms were respiratory distress. Study was conducted with lung CT in all cases showing a mass isodense. 1 case was studied by MRI; it showed hyperintensity in T2 sequences and isointense to muscle on T1. Surgical resection was the treatment in 5 of the 6 cases; one was treated with propranolol being successful. Conclusions: Intrathoracic hemagiomas are unusual, and usually present as a single solid isodense mass on radiography. In ul-trasound they are heterogeneous with visible vessels and calcifications. We consider gadolinium MRI gold standard for the study of CPM. Congenital hemagiomas in MRI show hyperintensity on T2 sequences and gadolinium enhancement. They can resolve sponta-neously, therefore the management should be subject to the patient's clinical and propranolol should be considered in addition to surgical options. If excision is necessary histopathologic findings with positivity for endothelial markers such as CD31, CD34 and nega-tivity for GLUT-1, will confirm our diagnosis (AU)

Valoración del cerebelo fetal mediante resonancia magnética / Evaluation of the fetal cerebellum by magnetic resonance imaging

La valoración del cerebelo fetal debe realizarse siempre por protocolo en las ecografías realizadas durante la gestación. Diferentes motivos como limitaciones técnicas o hallazgos ecográficos poco concluyentes han convertido la sospecha de patología del cerebelo fetal en una de las indicaciones más frecuentes de resonancia magnética (RM) prenatal. Aunque la ecografía fetal es la técnica de imagen de elección para su valoración, la RM muestra con mayor detalle la anatomía de la fosa posterior y las anomalías del desarrollo del cerebelo fetal, lo que permite un diagnóstico prenatal más preciso. Describimos la anatomía normal del cerebelo fetal mediante RM, así como las diferentes patologías que afectan a su normal desarrollo, y revisamos la terminología más apropiada para definirla, su diagnóstico diferencial y el papel de la RM en la evaluación prenatal de la fosa posterior (AU)

Obstetric protocols dictate that the fetal cerebellum should always be assessed during sonograms during pregnancy. For various reasons, including technical limitations or inconclusive sonographic findings, suspicion of cerebellar abnormalities is one of the most common indications for prenatal magnetic resonance imaging (MRI). Although sonography is the imaging technique of choice to assess the cerebellum, MRI shows the anatomy of the posterior fossa and abnormalities in the development of the fetal cerebellum in greater detail and thus enables a more accurate prenatal diagnosis. We describe and illustrate the normal anatomy of the fetal cerebellum on MRI as well as the different diseases that can affect its development. Moreover, we review the most appropriate terminology to define developmental abnormalities, their differential diagnoses, and the role of MRI in the prenatal evaluation of the posterior fossa (AU)

Torsión testicular perinatal. Valoración ecográfica y diagnóstico diferencial / Perinatal testicular torsion: ultrasound assessment and differential diagnosis

La torsión testicular perinatal constituye el 10% de las torsiones testiculares en la edad pediátrica y se produce en el periodo prenatal o neonatal durante el primer mes de vida. La mayoría son extravaginales, siendo improbable la torsión intravaginal. Su manejo es controvertido debido a la baja viabilidad del testículo y a la posibilidad de torsión bilateral. La ecografía es el método de elección para su estudio. La combinación del modo B con el Doppler color o el power Doppler facilita el diagnóstico de forma rápida y segura. Revisamos la apariencia ecográfica de la torsión testicular neonatal en cada una de sus formas de presentación, el diagnóstico diferencial con otras causas de aumento de la bolsa escrotal en el neonato, y finalmente su tratamiento (AU)

Perinatal testicular torsion, defined as torsion occurring in the prenatal period or in the first month after birth, accounts for 10% of all cases of testicular torsion in pediatric patients. Most are extravaginal, and intravaginal torsion is rare. Its management is controversial, due to the low viability of the testis and the possibility of bilateral torsion. Ultrasonography is the method of choice to study testicular torsion. Combining B-mode and power Doppler imaging facilitates a fast reliable diagnosis. We review the ultrasonographic appearance of neonatal testicular torsion for each presentation, the differential diagnosis with other causes of increased scrotal volume in neonates, and its treatment (AU)

Evaluation of the fetal cerebellum by magnetic resonance imaging. / Valoración del cerebelo fetal mediante resonancia magnética.

Obstetric protocols dictate that the fetal cerebellum should always be assessed during sonograms during pregnancy. For various reasons, including technical limitations or inconclusive sonographic findings, suspicion of cerebellar abnormalities is one of the most common indications for prenatal magnetic resonance imaging (MRI). Although sonography is the imaging technique of choice to assess the cerebellum, MRI shows the anatomy of the posterior fossa and abnormalities in the development of the fetal cerebellum in greater detail and thus enables a more accurate prenatal diagnosis. We describe and illustrate the normal anatomy of the fetal cerebellum on MRI as well as the different diseases that can affect its development. Moreover, we review the most appropriate terminology to define developmental abnormalities, their differential diagnoses, and the role of MRI in the prenatal evaluation of the posterior fossa.

Valor de la resonancia magnética cerebral en fetos con sospecha ecográfica de agenesia del cuerpo calloso / Value of brain MRI when sonography raises suspicion of agenesis of the corpus callosum in fetuses

Objetivo. Valorar el papel de la resonancia magnética (RM) en los fetos con sospecha ecográfica de agenesia del cuerpo calloso (ACC) para confirmar el diagnóstico y detectar anomalías intracraneales asociadas. Material y métodos. Estudio observacional descriptivo y retrospectivo de las RM cerebrales realizadas a 78 fetos remitidos a nuestro centro entre enero de 2006 y diciembre de 2015 por sospecha de ACC. Dos especialistas en diagnóstico por imagen fetal revisaron las exploraciones para evaluar la presencia y la morfología del cuerpo calloso. En los casos de ACC se valoró el resto de la neuroanatomía fetal para determinar la presencia de anomalías asociadas. Se correlacionaron los hallazgos de imagen prenatales con la RM posnatal o con la necropsia, cuando estuvieron disponibles. Resultados. La RM diagnosticó de ACC 45 casos, de los que 12 fueron de tipo parcial (26,7%) y 33 completa (73,3%). Se detectaron anomalías asociadas en 28 casos (62,2%), siendo la más frecuente la ventriculomegalia (78,6%), seguida de las malformaciones corticales (53,6%) y las anomalías de la fosa posterior (25%) y de la línea media (10,7%). Conclusión. La RM fetal facilita el diagnóstico de la ACC y la detección de anomalías asociadas. Su realización es importante ante la sospecha ecográfica prenatal de ACC (AU)

Objective. To evaluate the role of magnetic resonance imaging (MRI) in fetuses with a previous sonographic suspicion of agenesis of the corpus callosum (ACC) to confirm the diagnosis and to detect associated intracranial anomalies. Material and methods. Single-center retrospective and descriptive observational study of the brain MRI performed in 78 fetuses with ACC sonographic suspicion between January 2006 and December 2015. Two experts in fetal imaging reviewed the MRI findings to evaluate the presence and morphology of the corpus callosum. When ACC was detected the whole fetal brain anatomy was thoroughly studied to determine the presence of associated anomalies. Prenatal MR imaging findings were compared to postnatal brain MRI or necropsy findings when available. Results. Fetal MRI diagnosed 45 cases of ACC, 12 were partial (26.7%) and 33 complete (73.3%). In 28 cases (62,2%) associated intracranial anomalies were identified. The most often abnormality was ventriculomegaly (78,6%), followed by cortical malformations (53,6%), posterior fossa (25%) and midline anomalies (10,7%). Conclusion. Fetal brain MRI has an important role in the diagnosis of ACC and detection of associated anomalies. To perform a fetal brain MRI is important in fetuses with sonographic suspicion of ACC (AU)

Value of brain MRI when sonography raises suspicion of agenesis of the corpus callosum in fetuses. / Valor de la resonancia magnética cerebral en fetos con sospecha ecográfica de agenesia del cuerpo calloso.

OBJECTIVE: To evaluate the role of magnetic resonance imaging (MRI) in fetuses with a previous sonographic suspicion of agenesis of the corpus callosum (ACC) to confirm the diagnosis and to detect associated intracranial anomalies. MATERIAL AND METHODS: Single-center retrospective and descriptive observational study of the brain MRI performed in 78 fetuses with ACC sonographic suspicion between January 2006 and December 2015. Two experts in fetal imaging reviewed the MRI findings to evaluate the presence and morphology of the corpus callosum. When ACC was detected the whole fetal brain anatomy was thoroughly studied to determine the presence of associated anomalies. Prenatal MR imaging findings were compared to postnatal brain MRI or necropsy findings when available. RESULTS: Fetal MRI diagnosed 45 cases of ACC, 12 were partial (26.7%) and 33 complete (73.3%). In 28 cases (62,2%) associated intracranial anomalies were identified. The most often abnormality was ventriculomegaly (78,6%), followed by cortical malformations (53,6%), posterior fossa (25%) and midline anomalies (10,7%). CONCLUSION: Fetal brain MRI has an important role in the diagnosis of ACC and detection of associated anomalies. To perform a fetal brain MRI is important in fetuses with sonographic suspicion of ACC.

Quistes de ovario neonatales. Valoración ecográfica y diagnóstico diferencial / Neonatal ovarian cysts: ultrasound assessment and differential diagnosis

Los quistes de ovario son los quistes abdominales más frecuentes en fetos y neonatos de sexo femenino. La ecografía es la técnica de imagen de elección para su diagnóstico, ya que permite además distinguirlos de otras lesiones quísticas. Aunque la mayoría de quistes de ovario neonatales (QON) involucionan en el transcurso de los primeros meses de vida, pueden presentar complicaciones durante el periodo fetal o posnatal. Las manifestaciones ecográficas de los QON van a estar en función de las mismas. El manejo es controvertido, con la tendencia actual de esperar y ver. Describimos las diferentes formas de presentación de los QON con sus patrones ecográficos y complicaciones, su diagnóstico diferencial con otras lesiones abdominales quísticas y, finalmente, su manejo terapéutico (AU)

Ovarian cysts are the most common abdominal cysts in female fetuses and newborn girls. Ultrasonography is the imaging technique of choice for diagnosing ovarian cysts because it makes it possible to differentiate them from other cystic lesions. Although most neonatal ovarian cysts regress in the first few months after birth, complications can occur during gestation or after birth. The manifestations of ovarian cysts on ultrasonography will depend on the complications. The management is controversial, although the current trend favors watchful waiting. We describe the different presentations of neonatal ovarian cysts with their complications and their patterns of findings on ultrasonography. We also discuss the differential diagnosis with other cystic abdominal lesions, and finally we discuss the therapeutic management of neonatal ovarian cysts (AU)

Perinatal testicular torsion: ultrasound assessment and differential diagnosis. / Torsión testicular perinatal. Valoración ecográfica y diagnóstico diferencial.

Perinatal testicular torsion, defined as torsion occurring in the prenatal period or in the first month after birth, accounts for 10% of all cases of testicular torsion in pediatric patients. Most are extravaginal, and intravaginal torsion is rare. Its management is controversial, due to the low viability of the testis and the possibility of bilateral torsion. Ultrasonography is the method of choice to study testicular torsion. Combining B-mode and power Doppler imaging facilitates a fast reliable diagnosis. We review the ultrasonographic appearance of neonatal testicular torsion for each presentation, the differential diagnosis with other causes of increased scrotal volume in neonates, and its treatment.

Neonatal ovarian cysts: ultrasound assessment and differential diagnosis. / Quistes de ovario neonatales. Valoración ecográfica y diagnóstico diferencial.

Ovarian cysts are the most common abdominal cysts in female fetuses and newborn girls. Ultrasonography is the imaging technique of choice for diagnosing ovarian cysts because it makes it possible to differentiate them from other cystic lesions. Although most neonatal ovarian cysts regress in the first few months after birth, complications can occur during gestation or after birth. The manifestations of ovarian cysts on ultrasonography will depend on the complications. The management is controversial, although the current trend favors watchful waiting. We describe the different presentations of neonatal ovarian cysts with their complications and their patterns of findings on ultrasonography. We also discuss the differential diagnosis with other cystic abdominal lesions, and finally we discuss the therapeutic management of neonatal ovarian cysts.

Tomografía computarizada fetal de baja dosis para diagnosticar displasias óseas / Low-dose computed tomography to diagnose fetal bone dysplasias

Presentamos un caso de displasia cleidocraneal diagnosticado en la semana 25 de gestación mediante tomografía computarizada (TC) de baja dosis fetal. La sospecha era de displasia ósea grave debido al percentil bajo en los huesos largos y la apariencia ecográfica de craneosinostosis. La TC no demostró alteraciones incompatibles con la vida. La dosis efectiva de la prueba fue de 5 mSv, dentro del rango recomendado para estas exploraciones. La TC de baja dosis fetal es una técnica emergente que permite estudiar estructuras óseas con precisión a partir del segundo trimestre de gestación. En España, es legalmente posible interrumpir el embarazo en caso de malformación grave del feto incluso si se sobrepasa la semana 22 de gestación. Por tanto, ante la sospecha de una displasia ósea grave, el radiólogo debe conocer las estrategias para disminuir la dosis manteniendo una calidad diagnóstica suficiente, y conocer las estructuras óseas que debe evaluar (AU)

We present a case of cleidocranial dysplasia diagnosed by low-dose fetal computed tomography (CT) in the 25th week of gestation. Severe bone dysplasia was suspected because of the fetus’ low percentile in long bones length and the appearance of craniosynostosis on sonography. CT found no abnormalities incompatible with life. The effective dose was 5 mSv, within the recommended range for this type of examination. Low-dose fetal CT is a new technique that makes precision study of the bony structures possible from the second trimester of pregnancy. In Spain, abortion is legal even after the 22nd week of gestation in cases of severe fetal malformations. Therefore, in cases in which severe bone dysplasia is suspected, radiologists must know the strategies for reducing the dose of radiation while maintaining sufficient diagnostic quality, and they must also know which bony structures to evaluate (AU)

Low-dose computed tomography to diagnose fetal bone dysplasias. / Tomografía computarizada fetal de baja dosis para diagnosticar displasias óseas.

We present a case of cleidocranial dysplasia diagnosed by low-dose fetal computed tomography (CT) in the 25th week of gestation. Severe bone dysplasia was suspected because of the fetus' low percentile in long bones length and the appearance of craniosynostosis on sonography. CT found no abnormalities incompatible with life. The effective dose was 5 mSv, within the recommended range for this type of examination. Low-dose fetal CT is a new technique that makes precision study of the bony structures possible from the second trimester of pregnancy. In Spain, abortion is legal even after the 22nd week of gestation in cases of severe fetal malformations. Therefore, in cases in which severe bone dysplasia is suspected, radiologists must know the strategies for reducing the dose of radiation while maintaining sufficient diagnostic quality, and they must also know which bony structures to evaluate.

El ABC de la ecografía transfontanelar y más / The ABCs of transfontanellar ultrasound and more

La ecografía transfontanelar es una técnica diagnóstica ampliamente utilizada en el estudio de la neuroanatomía y patología propia del encéfalo neonatal gracias a sus múltiples ventajas, como la ausencia de radiaciones, disponibilidad, portabilidad y bajo coste. El desarrollo de equipos más potentes junto con la mejora de sondas microcurvadas y lineares de distintas frecuencias ha permitido una ostensible mejoría en la calidad de la imagen ecográfica del cerebro neonatal. Para obtener el máximo rendimiento de esta técnica es importante familiarizarse con la anatomía y patología neurológica de este grupo de edad. De hecho, es la primera técnica en el estudio de complicaciones a corto y medio plazo de los recién nacidos prematuros. En el neonato a término es muy útil para abordar múltiples situaciones clínicas, ya que permite seleccionar qué pacientes se beneficiarán de otras técnicas invasivas, más caras o que requieran sedación, como la resonancia magnética. Sus desventajas son ser operador dependiente y la necesidad de una adecuada ventana acústica. Tiene limitaciones en el estudio de la patología traumática obstétrica, la valoración de la patología malformativa compleja y el daño de la sustancia blanca. Con los conocimientos básicos de neurología neonatal, el equipamiento apropiado y una técnica cuidadosa que incluya el uso de distintas fontanelas, es un método fiable que permite el diagnóstico y seguimiento de patologías tanto congénitas como adquiridas en el neonato (AU)

Transfontanellar ultrasound is widely used to study neonatal neuroanatomy and disease. This technique has many advantages, such as the absence of ionizing radiation and its wide availability, portability, and low cost. The development of more powerful ultrasound scanners and improved microcurved and linear probes of different frequencies have resulted in improved image quality. To take full advantage of this technique, it is important to know the normal and pathologic anatomy in neonates. Transfontanellar ultrasound is the first-line technique for studying short-term and mid-term complications in premature newborns. In full-term newborns, it is very useful in many clinical situations, making it possible to select which patients will benefit from other techniques that are more invasive or more expensive, or that require sedation, such as MRI. The disadvantages of the technique are that it is operator dependent and that an appropriate acoustic window is necessary. It also has limitations in the study of obstetric trauma, in the evaluation of complex malformations, and in the assessment of damage to white matter. With a basic understanding of neonatal neurology, the appropriate equipment, and a careful technique taking advantage of the different fontanels, transfontanellar ultrasound is a reliable method that makes it possible to diagnose and follow up both congenital and acquired conditions in neonates (AU)

The ABCs of transfontanellar ultrasound and more. / El ABC de la ecografía transfontanelar y más.

Transfontanellar ultrasound is widely used to study neonatal neuroanatomy and disease. This technique has many advantages, such as the absence of ionizing radiation and its wide availability, portability, and low cost. The development of more powerful ultrasound scanners and improved microcurved and linear probes of different frequencies have resulted in improved image quality. To take full advantage of this technique, it is important to know the normal and pathologic anatomy in neonates. Transfontanellar ultrasound is the first-line technique for studying short-term and mid-term complications in premature newborns. In full-term newborns, it is very useful in many clinical situations, making it possible to select which patients will benefit from other techniques that are more invasive or more expensive, or that require sedation, such as MRI. The disadvantages of the technique are that it is operator dependent and that an appropriate acoustic window is necessary. It also has limitations in the study of obstetric trauma, in the evaluation of complex malformations, and in the assessment of damage to white matter. With a basic understanding of neonatal neurology, the appropriate equipment, and a careful technique taking advantage of the different fontanels, transfontanellar ultrasound is a reliable method that makes it possible to diagnose and follow up both congenital and acquired conditions in neonates.

¿Seguro que es un granuloma? / Are you sure that it is a granuloma?

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