Lesiones inflamatorias del troncoencéfalo: claves diagnósticas en RM / Inflammatory lesions of the brainstem: Keys for the diagnosis by MRI

Objetivo: Describir los hallazgos en resonancia magnética (RM) de las principales enfermedades inflamatorias e inmunomediadas que afectan al troncoencéfalo. Conclusión: El diagnóstico diferencial de las lesiones inflamatorias localizadas en el troncoencéfalo es complicado debido al amplio espectro de enfermedades autoinmunes, infecciosas y síndromes paraneoplásicos que pueden causarlas. Conocer estas entidades, sus características clínicas y sus manifestaciones en RM, sobre todo en cuanto a número, morfología, extensión y apariencia en las diferentes secuencias, es útil a la hora de orientar el diagnóstico radiológico.(AU)

Objective: To describe the magnetic resonance imaging (MRI) findings for the most common inflammatory and immune-mediated diseases that involve the brainstem. Conclusion: Inflammatory lesions involving the brainstem are associated with a wide range of autoimmune, infectious, and paraneoplastic syndromes, making the differential diagnosis complex. Being familiar with these entities, their clinical characteristics, and their manifestations on MRI, particularly the number of lesions, their shape and extension, and their appearance in different sequences, is useful for orienting the radiological diagnosis.(AU)

Inflammatory lesions of the brainstem: Keys for the diagnosis by MRI.

OBJECTIVE: To describe the magnetic resonance imaging (MRI) findings for the most common inflammatory and immune-mediated diseases that involve the brainstem. CONCLUSION: Inflammatory lesions involving the brainstem are associated with a wide range of autoimmune, infectious, and paraneoplastic syndromes, making the differential diagnosis complex. Being familiar with these entities, their clinical characteristics, and their manifestations on MRI, especially the number of lesions, their shape and extension, and their appearance in different sequences, is useful for orienting the radiological diagnosis.

CT findings for dental disease.

Traumatic and especially inflammatory-infectious dental lesions are very prevalent in our context. Inflammatory-infectious disease is usually discovered incidentally on imaging studies that include the orofacial region. Moreover, these conditions can result in potentially severe complications, so early diagnosis and treatment are important. Multidetector computed tomography offers good diagnostic performance for dental lesions, although the radiological findings can be subtle and can go undetected if the radiologist is not familiar with them. Likewise, invasive dental procedures are becoming increasingly common, and these can also result in complications. On the other hand, in daily practice a variety of radiolucent mandibular lesions or developmental anomalies can lead to erroneous interpretations. For these reasons, radiologists should be familiar with possible findings related with dental conditions.

Hallazgos por imagen de patología dentaria en tomografía computarizada / CT findings for dental disease

La patología dentaria traumática y en especial la inflamatorio-infecciosa son muy prevalentes en nuestro medio. Esta última suele encontrarse de forma incidental en muchos de los estudios radiológicos que incluyen la región orofacial. Además, es una potencial causa de complicaciones graves, lo que hace que su diagnóstico y tratamiento precoz sean importantes. La tomografía computarizada multidetector ofrece un buen rendimiento diagnóstico en la patología dentaria, aunque sus manifestaciones radiológicas pueden ser sutiles y si no se conocen, pasar desapercibidas. Asimismo, son cada vez más frecuentes los procedimientos dentales invasivos, no exentos de complicaciones. Por otra parte, en la práctica diaria pueden encontrarse variedad de lesiones mandibulares radiolucentes o anomalías del desarrollo que pueden llevar a interpretaciones erróneas. Por todo ello, es recomendable que el radiólogo esté familiarizado con los posibles hallazgos en la patología dentaria.(AU)

Traumatic and especially inflammatory-infectious dental lesions are very prevalent in our context. Inflammatory-infectious disease is usually discovered incidentally on imaging studies that include the orofacial region. Moreover, these conditions can result in potentially severe complications, so early diagnosis and treatment are important. Multidetector computed tomography offers good diagnostic performance for dental lesions, although the radiological findings can be subtle and can go undetected if the radiologist is not familiar with them. Likewise, invasive dental procedures are becoming increasingly common, and these can also result in complications. On the other hand, in daily practice a variety of radiolucent mandibular lesions or developmental anomalies can lead to erroneous interpretations. For these reasons, radiologists should be familiar with possible findings related with dental conditions.(AU)

Anisakiasis: Imaging findings.

OBJECTIVE: To review the main findings for anisakiasis in the different imaging tests that can be used to diagnose it, based on studies done at our center. CONCLUSION: The presence of Anisakis species in food consumed in Western countries is becoming more common. Patients with anisakiasis present with acute abdomen; there are no specific clinical signs or laboratory findings. Careful history taking is key to discovering exposure to Anisakis-contaminated food, but this task is hindered by unfamiliarity with the condition and lack of suspicion and is also confounded by the variable latency period after ingestion of Anisakis-contaminated food. Give the nonspecific presentation, patients with anisakiasis often undergo imaging tests to rule out other processes. Thus, radiologists need to be familiar with the spectrum of imaging findings that should lead to the inclusion of anisakiasis in the differential diagnosis, so they can guide clinicians toward directed history taking and specific tests.

Anisakiasis: manifestaciones radiológicas / Anisakiasis: imaging findings

Objetivo: Revisar los principales hallazgos radiológicos de la anisakiasis en las diferentes pruebas de imagen que se pueden utilizar en su diagnóstico, basándonos en estudios realizados en nuestro centro. Conclusión: La contaminación alimentaria por Anisakis muestra una tendencia creciente en países occidentales. Habitualmente se presenta como un cuadro de patología abdominal aguda, sin datos clínicos o analíticos característicos. Una anamnesis cuidadosa es clave para descubrir el antecedente de exposición, pero se ve dificultada al ser un proceso poco conocido o sospechado y con un periodo de latencia variable. Al tratarse de cuadros poco específicos, a estos pacientes con frecuencia se les realizan pruebas radiológicas para descartar otros procesos. Por ello, es recomendable familiarizarse con los posibles hallazgos en imagen que permitan incluir la anisakiasis en el diagnóstico diferencial, lo que podría guiar al clínico hacia una anamnesis dirigida y pruebas específicas.(AU)

Objective: To review the main findings for anisakiasis in the different imaging tests that can be used to diagnose it, based on studies done at our center. Conclusion: The presence of Anisakis species in food consumed in Western countries is becoming more common. Patients with anisakiasis present with acute abdomen; there are no specific clinical signs or laboratory findings. Careful history taking is key to discovering exposure to Anisakis-contaminated food, but this task is hindered by unfamiliarity with the condition and lack of suspicion and is also confounded by the variable latency period after ingestion of Anisakis-contaminated food. Give the nonspecific presentation, patients with anisakiasis often undergo imaging tests to rule out other processes. Thus, radiologists need to be familiar with the spectrum of imaging findings that should lead to the inclusion of anisakiasis in the differential diagnosis, so they can guide clinicians toward directed history taking and specific tests.(AU)

CT findings for dental disease. / Hallazgos por imagen de patología dentaria en tomografía computarizada.

Traumatic and especially inflammatory-infectious dental lesions are very prevalent in our context. Inflammatory-infectious disease is usually discovered incidentally on imaging studies that include the orofacial region. Moreover, these conditions can result in potentially severe complications, so early diagnosis and treatment are important. Multidetector computed tomography offers good diagnostic performance for dental lesions, although the radiological findings can be subtle and can go undetected if the radiologist is not familiar with them. Likewise, invasive dental procedures are becoming increasingly common, and these can also result in complications. On the other hand, in daily practice a variety of radiolucent mandibular lesions or developmental anomalies can lead to erroneous interpretations. For these reasons, radiologists should be familiar with possible findings related with dental conditions.

A bibliometric study of the journal Radiología during the period 2010-2019. / Análisis bibliométrico de la revista Radiología en el periodo 2010-2019.

BACKGROUND AND AIMS: Bibliometrics makes it possible to measure the relative importance of a scientific journal in its field. The current study analyzed the scientific publications in Radiología and the bibliometric parameters of the journal in the period comprising 2010 through 2019. MATERIALS AND METHODS: We reviewed the bibliometrics for Radiología through information obtained from three sources: Scopus, the online version of the journal, and the publisher (Elsevier). We retrospectively analyzed aspects related to the editorial process (final decision and speed), the articles published (type, subspecialty of radiology, and imaging technique), the trends in citation and various indices (CiteScore, SNIP, and SJR), visibility, downloads, author characteristics (geographical origin and institutional collaboration), and the most cited articles. RESULTS: The number of articles published in Radiología gradually decreased during the decade, and the time to publication increased. Original research articles account for the largest share of the articles published. The most common subject areas were radiology of the digestive tract and neuroradiology. Nevertheless, the bibliometric indicators and the number of downloads of articles increased every year. Regarding the authorship of the articles published, although authors from Spain predominate, the participation of authors from other countries became increasingly common. Collaboration among different institutions also became increasingly common in the period analyzed. CONCLUSIONS: This review shows the progression of the journal's scientific work and some aspects that must be addressed to favor the growth of Radiología.

La tesis doctoral: guía de supervivencia para radiólogos / Doctoral theses: a survival guide for radiologists

Hoy día, las posibilidades de investigación en el campo de la radiología son sorprendentemente amplias, accesibles a cualquier nivel. Gracias a los programas de gestión e informe, los archivos disponibles de imágenes y casos son enormes. Sin embargo, la presión asistencial y la falta de medios a veces limitan su avance. Una de las posibles vías de acceso son los programas de doctorado. La introducción del Plan Bolonia ha condicionado grandes cambios en la organización y requisitos necesarios para la tesis doctoral. Esto puede ser confuso para aquellos más alejados de la universidad; dado que la realización de la tesis con cierta frecuencia se plantea avanzada la vida profesional, su desconocimiento puede ser una dificultad añadida. El objetivo de este artículo es revisar la normativa básica que rige los programas de doctorado en la actualidad, así como aportar algunos consejos útiles para los posibles futuros doctorandos

Nowadays, there are, surprisingly, many opportunities for research in the field of radiology, and these are accessible at any level. Thanks to radiological information systems and picture archiving and communication systems (PACS), a huge number of images and cases are available. Nevertheless, the daily workload and the lack of resources sometimes limit the advance of radiologic research. One of the routes of access is doctoral programs. The Bologna process has resulted in significant changes in the organization and in the prerequisites for doctoral theses. The new situation can be confusing for those who are further removed from the university. Given that many radiologists undertake their doctoral theses once their careers are well established, unfamiliarity with the new system can represent an added difficulty. This article aims to review the basic regulations that govern doctoral programs nowadays and to provide some useful advice for potential doctoral students

Doctoral theses: a survival guide for radiologists. / La tesis doctoral: guía de supervivencia para radiólogos.

Nowadays, there are, surprisingly, many opportunities for research in the field of radiology, and these are accessible at any level. Thanks to radiological information systems and picture archiving and communication systems (PACS), a huge number of images and cases are available. Nevertheless, the daily workload and the lack of resources sometimes limit the advance of radiologic research. One of the routes of access is doctoral programs. The Bologna process has resulted in significant changes in the organization and in the prerequisites for doctoral theses. The new situation can be confusing for those who are further removed from the university. Given that many radiologists undertake their doctoral theses once their careers are well established, unfamiliarity with the new system can represent an added difficulty. This article aims to review the basic regulations that govern doctoral programs nowadays and to provide some useful advice for potential doctoral students.

Nodal staging in the rectal cancer follow-up MRI after chemoradiotherapy: use of morphology, size, and diffusion criteria.

AIM: To analyse changes in post-neoadjuvant follow-up magnetic resonance imaging (MRI) staging accuracy for malignant adenopathies in rectal cancer, by comparing size criteria with morphological criteria using high-resolution T2-weighted sequences, as well as variations when adding diffusion-weighted imaging. METHODS AND MATERIALS: The present study was a cross-sectional study of a database including 46 1.5-T MRI examinations (2011-2016) from patients with biopsy-proven rectal cancer and chemoradiotherapy treatment before surgery. All cases were reviewed by three radiologists individually, who were blinded to any clinical information. The radiologists were experienced in rectal cancer (3-6 years) and evaluated the presence of malignant nodes in each patient. Malignancy was determined using morphological, size (5 mm), and diffusion criteria separately, as well as morphology plus diffusion. Each case was assessed four times: (1) evaluation of morphological criteria; (2) size criteria; (3) evaluation only using diffusion (b-values 50, 400, and 800); and (4) diffusion plus morphological criteria. Histological staging of surgical specimens was the reference standard. Statistical analysis included accuracy (area under the receiver operating characteristic [ROC] curve [AUC]), sensitivity, specificity, and positive/negative predictive values (PPV/NPV) for each radiologist, and group agreement (Fleiss' kappa). RESULTS: Mean values using morphological criteria were: AUC 0.78, sensitivity 77.7%, specificity 73.8%, PPV 66.1%, NPV 85.2%. Using size criterion: AUC 0.75, sensitivity 62.9%, specificity 83.2%, PPV 74.1%, NPV 80%. Added diffusion yielded no improvement, and yielded worse results by itself. CONCLUSIONS: Although morphological criteria showed better results in accuracy, sensitivity, and NPV, size criterion yielded the best specificity and PPV. Adding diffusion did not demonstrate a clear advantage over the criteria by themselves. Thus, mixed size-morphology criteria could have the greatest diagnostic value for follow-up N-staging.

¿Eco-FAST o tomografía computarizada multidetectora en el paciente hemodinámicamente inestable tras traumatismo de urgencias? / Focused assessment with sonography for trauma (FAST) versus multidetector computed tomography in hemodynamically unstable emergency patients

Estudio tipo CAT (Critically Appraised Topics) que tiene como objetivo valorar el grado de evidencia científica que apoya la realización de eco-FAST (Focused Assessment with Sonography for Trauma) o tomografía computarizada multidetectora en los pacientes del servicio de urgencias hemodinámicamente inestables tras traumatismo. Se realizó una búsqueda eficiente en la bibliografía y se encontraron varios artículos recientes de alto nivel de evidencia. Se llegó a la conclusión de que se acepta el uso de la eco-FAST como prueba de imagen inicial en el paciente hemodinámicamente inestable, aunque su rendimiento es limitado en determinadas circunstancias. La realización de tomografía computarizada multidetectora debe valorarse dependiendo del grado de inestabilidad y de la distancia que hay que recorrer. Sin embargo, existen pocas referencias que valoren la aproximación de los equipos de tomografía a las salas de urgencia (AU)

This critically appraised topic (CAT) study aims to evaluate the quality and extent of the scientific evidence that supports the use of focused assessment with sonography for trauma (FAST) versus multidetector computed tomography (MDCT) in hemodynamically unstable trauma patients in the emergency room. An efficient search of the literature yielded several recent articles with a high level of evidence. The CAT study concludes that FAST is an acceptable initial imaging test in hemodynamically unstable patients, although its performance is limited in certain circumstances. The decision whether to use MDCT should be determined by evaluating the patient's degree of instability and the distance to the MDCT scanner. Nevertheless, few articles address the question of the distance to MDCT scanners in emergency departments (AU)

Focused assessment with sonography for trauma (FAST) versus multidetector computed tomography in hemodynamically unstable emergency patients. / ¿Eco-FAST o tomografía computarizada multidetectora en el paciente hemodinámicamente inestable tras traumatismo de urgencias?

This critically appraised topic (CAT) study aims to evaluate the quality and extent of the scientific evidence that supports the use of focused assessment with sonography for trauma (FAST) versus multidetector computed tomography (MDCT) in hemodynamically unstable trauma patients in the emergency room. An efficient search of the literature yielded several recent articles with a high level of evidence. The CAT study concludes that FAST is an acceptable initial imaging test in hemodynamically unstable patients, although its performance is limited in certain circumstances. The decision whether to use MDCT should be determined by evaluating the patient's degree of instability and the distance to the MDCT scanner. Nevertheless, few articles address the question of the distance to MDCT scanners in emergency departments.

¿Están indicadas las pruebas de imagen urgentes en el manejo de la pancreatitis aguda? / Are urgent imaging tests indicated in the management of acute pancreatitis?

La pancreatitis aguda es una urgencia frecuente dentro de la patología abdominal. Se acepta que para su diagnóstico se requieren dos de tres condiciones: presentación clínica típica, datos característicos analíticos y/o en pruebas de imagen. Probablemente, por razones de eficiencia y frecuencia, los dos primeros puntos son los más habitualmente usados. Sin embargo, la necesidad de estudios radiológicos es en ocasiones una fuente de conflicto. Por ello, decidimos realizar una revisión de la evidencia actual en cuanto a la indicación de realización de pruebas de imagen de forma urgente para el manejo de la pancreatitis aguda (AU)

Acute pancreatitis is a common emergency within abdominal disease. It is accepted that two of three conditions must be fulfilled for its diagnosis: characteristic clinical presentation, characteristic laboratory findings, and/or characteristic diagnostic imaging findings. The first two conditions are the most often used, probably for reasons of efficiency and frequency. Nevertheless, the need for imaging studies is sometimes a source of conflict. For this reason, we decided to review the current evidence regarding the indication of urgent imaging tests in the management of acute pancreatitis (AU)

[Are urgent imaging tests indicated in the management of acute pancreatitis?]. / ¿Están indicadas las pruebas de imagen urgentes en el manejo de la pancreatitis aguda?

Acute pancreatitis is a common emergency within abdominal disease. It is accepted that two of three conditions must be fulfilled for its diagnosis: characteristic clinical presentation, characteristic laboratory findings, and/or characteristic diagnostic imaging findings. The first two conditions are the most often used, probably for reasons of efficiency and frequency. Nevertheless, the need for imaging studies is sometimes a source of conflict. For this reason, we decided to review the current evidence regarding the indication of urgent imaging tests in the management of acute pancreatitis.

Solución del caso 33. Interrupción proximal unilateral de la arteria pulmonar izquierda / Solution to case 33. Unilateral proximal interruption of the left pulmonary artery

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