Analysis of risk factors leading to multiple breast abscesses during lactation.

We investigated 1805 cases of breast abscesses during lactation to estimate the risk factors for multiple breast abscesses during lactation. A total of 2000 cases of breast abscesses during lactation were investigated using an online questionnaire, and 1805 cases with complete data were analyzed. The survey response rate was 90%. According to the number of abscesses, the patients were divided into 2 groups: single breast abscess (number = 1298) and multiple breast abscess (number = 507). Pearson chi-square test was used to compare the 15 risk factors between the 2 groups. Risk factors with significant differences were substituted into a binary logistic regression model to analyze the independent risk factors associated with multiple breast abscesses during lactation. There were significant differences between the 2 groups in (1) weeks postpartum, (2) separated from the baby, (3) breastfeeding exclusivity, (4) nipple inversion, (5) fever, (6) breast redness/swelling, (7) nipple pain, (8) breast massage by nonmedical staff, with (1), (5), (6), and (8) being independent risk factors. Patients under 6 weeks postpartum, separated from the baby, not exclusively breastfeeding, having an inverted nipple on the affected side, fever, breast skin redness and swelling on the affected side, nipple pain, and having undergone a breast massage by nonmedical staff are more likely to develop multiple breast abscesses.

Intrathoracic Transposition of a Pedicled Latissimus Dorsi Muscle Flap for Complicated Chronic Empyema Thoracis: A Plea for its Popularity in our Subregion.

INTRODUCTION: Empyema thoracis is a debilitating disease that still constitutes a significant burden among thoracic surgical diseases in our environment. It sometimes occurs secondary to ruptured lung abscess with varying degrees of lung destruction and bronchopleural fistula. CASE REPORT: A 65-year-old woman presented to our unit with a two-month history of cough which subsequently became productive of purulent sputum and posture-dependent, and fever, with progressive dyspnea on exertion. She was subsequently managed for chronic right empyema thoracis secondary to a ruptured lung abscess. We briefly describe the evaluation, indication, and technique for intrathoracic transposition of a pedicled latissimus dorsi muscle flap for operative management of this index disease, and the very good medium and long-term outcomes observed for this patient. CONCLUSION: Where indicated and with meticulous preoperative planning, transposition of a pedicled latissimus dorsi muscle flap for complicated chronic empyema thoracis can prevent a surgical albatross with a reduced hospital stay, cost of treatment and excellent patient satisfaction at the meagre expense of about 30 minutes or less extra intra-operative time.

INTRODUCTION: L'empyème thoracique est une maladie invalidante qui constitue toujours un fardeau significatif parmi les maladies chirurgicales thoraciques dans notre environnement. Il survient parfois secondairement à un abcès pulmonaire rompu avec des degrés variables de destruction pulmonaire et de fistule bronchopleurale. RAPPORT DE CAS: Une femme de 65 ans s'est présentée à notre unité avec une toux persistante depuis deux mois, qui est ensuite devenue productive de crachats purulents dépendant de la posture, ainsi que de la fièvre, avec une dyspnée progressive à l'effort. Elle a ensuite été traitée pour un empyème thoracique chronique droit secondaire à un abcès pulmonaire rompu. Nous décrivons brièvement l'évaluation, les indications et la technique de transposition intrathoracique d'un lambeau musculaire grand dorsal pédiéculé pour la prise en charge opératoire de cette maladie, ainsi que les très bons résultats à moyen et long terme observés pour cette patiente. CONCLUSION: Lorsque cela est indiqué et avec une planification préopératoire méticuleuse, la transposition d'un lambeau musculaire grand dorsal pédiéculé pour un empyème thoracique chronique compliqué peut éviter un fardeau chirurgical avec une réduction du séjour hospitalier, du coût du traitement et une excellente satisfaction du patient, avec un faible coût supplémentaire en temps opératoire de seulement environ 30 minutes ou moins. MOTS-CLÉS: Abcès pulmonaire, lambeau musculaire grand dorsal pédiéculé, empyème thoracique, résultats.

Salvage treatment of acute respiratory failure after autogenous tissue flap transplantation for chronic empyema with chest wall sinus: a case report and literature review.

BACKGROUND: Chronic empyema with chest wall sinus is a difficult and complex disease caused by multiple causative factors. It is difficult to control local infection due to its possible combination of bronchopleural fistula (BPF) and residual bone.The relevant literature emphasizes some risk factors for empyema progression after pneumonectomy, while the correlation between empyema and BPF after pneumonectomy increases mortality by infecting the remaining lungs. After pneumonectomy, the lung function of the contralateral side is particularly important. CASE PRESENTATION: This paper reports a 62-year-old male patient who underwent right pneumonectomy for squamous cell carcinoma of the lung 12 years ago and began to develop empyema with anterior chest wall sinus 3 years ago. After admission, chest computed tomography (CT) showed right pleural effusion and formation of chest wall sinus. According to his clinical symptoms and imaging examination, he was diagnosed as chronic empyema with chest wall sinus.Due to the huge residual cavity of the patient,the clinical effect of using free vastus lateralis myocutaneous flap combined with pedicled pectoralis major muscle flap to fill the abscess cavity was satisfactory,but acute respiratory failure occurred due to left lung aspiration pneumonia after operation. CONCLUSIONS: After a series of treatment measures such as tracheal cannula, tracheotomy, anti-infection, maintenance of circulatory stability, and rehabilitation training, the patient was ultimately rescued and cured. Postoperative follow-up showed that the muscle flaps survived and empyema was eliminated.

Clostridium perfringens empyema after right hemicolectomy for caecal volvulus.

Empyema of the lung is an infection-induced collection of fluid in the chest cavity. Clostridium perfringens is a bacterium that inhabits the intestine and is a rare cause of empyema after abdominal surgery. A slow phase of infection, associated with C. perfringens empyema, has previously been reported in cases of similar infections. Herein, we present a case of C. perfringens empyema following abdominal surgery. The empyema was initially managed using oxygen supplementation, fluid drainage and antibiotic therapy.This initial therapy failed in the present case because multiple collections of infected fluid prevented the lungs from expanding, requiring decortication, a pulmonary operation to remove the inflammatory tissue from the walls of the lung and associated with the infection, to allow the lung to expand. Following this operation, the patient recovered baseline levels of breathing and oxygen supplementation.

Ruptura espontánea de absceso hepático del lóbulo izquierdo en hemitórax derecho / Spontaneous rupture of liver abscess of the left lobe in the right hemithorax

Introducción: La extensión transdiafragmática del absceso hepático piógeno constituye un caso raro de empiema pleural. Es una enfermedad de progresión rápida y con altas tasas de mortalidad, cercanas al 100 por ciento si no se trata a tiempo. Objetivo: Describir el caso de una paciente con empiema pleural derecho, secundario a ruptura de absceso piógeno del lóbulo hepático izquierdo. Caso clínico: Paciente femenina de 70 años de edad que acude al cuerpo de guardia con fiebre, dolor abdominal, síndrome general. La tomografía computadorizada mostró absceso hepático el lóbulo izquierdo con licuefacción casi total y posteriormente presentó como complicación un empiema torácico derecho. La paciente fue tratada con drenaje con sonda pleural. A pesar de los tratamientos antibióticos y quirúrgicos oportunos la paciente fallece en shock séptico. Conclusiones: Se reporta un caso raro de empiema secundario a absceso hepático del lóbulo izquierdo. La demora de la paciente en acudir a instituciones de salud conllevó al fallecimiento de la paciente a pesar del tratamiento antibiótico y quirúrgico(AU)

Introduction: The transdiaphragmatic extension of the pyogenic liver abscess constitutes a rare case of pleural empyema. It is a rapidly progressive disease with high mortality rates close to 100 percent if it is not treated in time. Objective: To describe the case of a patient with right pleural empyema secondary to a ruptured pyogenic abscess of the left hepatic lobe. Clinical case: A 70-year-old female patient who came to emergency with fever, abdominal pain and general syndrome. The computed tomography scan showed a liver abscess in the left lobe with almost total liquefaction, and later a right thoracic empyema was a complication. The patient was treated with chest tube drainage. Despite timely antibiotic and surgical treatments, the patient died of septic shock. Conclusions: A rare case of empyema secondary to liver abscess of the left lobe is reported. The delay of the patient in going to health institutions led to the death of the patient despite antibiotic and surgical treatment(AU)

La combinación de la determinación de parámetros bioquímicos del líquido pleural mejora la predicción diagnóstica de la infección pleural complicada/empiema / The Combined Use of Pleural Fluid Parameters Improves Diagnostic Accuracy in Complicated Pleural Infection/Empyema

Introducción: Predecir cuándo un derrame pleural infeccioso puede evolucionar hacia una infección complicada/empiema es difícil de establecer. Nuestro propósito es analizar si un modelo predictivo construido con parámetros bioquímicos del líquido pleural puede ayudar a identificar estos derrames. Métodos: Se estudió de forma prospectiva a todos los pacientes diagnosticados de derrame pleural infeccioso y se clasificaron en no complicados y complicados/empiemas. Se realizó un análisis de regresión logística para estimar la probabilidad de infección pleural complicada/empiema. Con base en parámetros bioquímicos del líquido pleural, se construyó un modelo predictivo y se determinaron su discriminación (áreas bajo la curva ROC), calibración y precisión diagnóstica. Resultados: Se incluyó a 177 pacientes (74 infecciones pleurales no complicadas y 103 complicadas/empiemas). El área bajo la curva del modelo construido (pH, lactato deshidrogenasa e interleucina 6) fue 0,9783, significativamente mejor que cualquiera de las variables bioquímicas utilizadas de forma individual (0,921, 0,949 y 0,837, respectivamente; p < 0,001 usando todos los parámetros). La tasa de clasificación correcta fue del 96% de los derrames (170/177; 72/74 [97,3%] de los no complicados y 98/103 [95,1%] de los complicados/empiemas). Conclusión: El modelo predictivo analizado tiene una buena rentabilidad para el diagnóstico de las infecciones pleurales complicadas/empiemas, superior a la de cualquiera de las variables individuales que lo componen

Introduction: Identifying infectious pleural effusions (IPE) that will progress to complicated infection or empyema is challenging. The purpose of this study was to determine whether a model based on multiple biochemical parameters in pleural fluid can predict which IPEs will produce empyema. Methods: A prospective study was performed of all cases of IPEs treated in our unit. IPEs were classified as uncomplicated or complicated (empyema). Logistic regression was used to estimate the risk for complicated pleural infection (empyema). A predictive model was developed using biochemical parameters in pleural fluid. Discriminatory power (areas under the ROC curve), calibration, and diagnostic accuracy of the model were assessed. Results: A total of 177 patients were included in the study (74 with uncomplicated infectious pleural effusion, and 103 with complicated pleural effusion/empyema). The area under the curve (AUC) for the model (pH, lactate dehydrogenase and interleukin 6) was 0.9783, which is significantly superior to the AUC of the individual biochemical parameters alone (0.921, 0.949, and 0.837, respectively; P <.001 using all parameters). The rate of correct classification of infectious pleural effusions was 96% [170/177: 72/74 (97.3%) for uncomplicated and 98/103 (95.1%) for complicated effusion (empyema)]. Conclusion: The multiple-marker model showed better diagnostic performance for predicting complicated infectious pleural effusion (empyema) compared to individual parameters alone

Logistic regression analysis of clinical and computed tomography features of pulmonary abscesses and risk factors for pulmonary abscess-related empyema

OBJECTIVES: This study was conducted to investigate the risk factors for pulmonary abscess-related empyema by investigating the clinical characteristics and chest computed tomography imaging features of patients with pulmonary abscesses. METHODS: We retrospectively analyzed the chest computed tomography findings and clinical features of 101 cases of pulmonary abscess, including 25 cases with empyema (the experimental group) and 76 cases with no empyema (the control group). The potential risk factors for pulmonary abscess-related empyema were compared between the groups by using univariate and multivariate logistic regression analyses. RESULTS: The incidence of pulmonary abscess-related empyema was 24.8% (25/101). Univariate analysis showed that male gender, diabetes, pleuritic symptoms, white blood cells >10×109/L, albumin level <25 g/L, and positive sputum cultures were potential clinical-related risk factors and that an abscess >5 cm in diameter and transpulmonary fissure abscesses were potential computed tomography imaging-related risk factors for pulmonary abscess-related empyema. Multivariate logistic regression analysis showed that transpulmonary fissure abscesses (odds ratio=9.102, p=0.003), diabetes (odds ratio=9.066, p=0.003), an abscess >5 cm in diameter (odds ratio=8.998, p=0.002), and pleuritic symptoms (odds ratio=5.395, p=0.015) were independent risk factors for pulmonary abscess-related empyema. CONCLUSIONS: Transpulmonary fissure abscesses, diabetes, giant pulmonary abscesses, and pleuritic symptoms increased the risk of empyema among patients with pulmonary abscesses.

Linfoma pleural primario asociado a piotórax / Pyothorax associated primary pleural lymphoma

RESUMEN: presentamos el caso de un paciente varón, exfumador, con antecedentes de empiema crónico de origen tuberculoso, que consultó por dolor torácico. Una tomografía computerizada (TC) demostró una pérdida de volumen en hemitórax derecho, con paquipleuritis calcificada asociada a colección hipodensa pleural, así como una lesión de partes blandas en contigüidad con la referida colección sugestiva de empiema necessitatis. En una tomografía por emisión de positrones (PET) se objetivó masa hipermetabólica de intensa captación en pared torácica derecha con afectación pleural. Se realizó biopsia guiada por TC con diagnóstico de linfoma no Hodgkin. El linfoma pleural primario representa el 7% de los casos de linfoma. Habitualmente afecta a pacientes con antecedentes de infección VIH o piotórax crónico. Los síntomas más frecuentes son disnea y dolor torácico. El diagnóstico se realiza mediante biopsia guiada o videotoracoscopia. El tipo histopatológico de linfoma pleural más descrito es el linfoma de células B grandes difuso

ABSTRACT: We present the case of a male patient, former smoker, with a history of chronic tuberculosis empyema, complaining of thoracic pain. A computerized tomography (CT) scan showed volume loss in the right hemithorax, with calcified pachypleuritis associated with hypodense pleural collection, as well as a soft tissue lesion contiguous with said collection, suggestive of empyema necessitans. A positron emission tomography (PET) scan showed a hypermetabolic mass with intense uptake on the right thoracic wall with pleural involvement. A CT-guided biopsy was done, obtaining a diagnosis of non-Hodgkin lymphoma. Primary pleural lymphoma accounts for 7% of all lymphoma cases. It normally affects patients with a history of HIV infection or chronic pyothorax. The most frequent symptoms are dyspnea and thoracic pain. Diagnosis is made using guided biopsy or videothoracoscopy. The most commonly described histopathological type of pleural lymphoma is diffuse large B-cell lymphoma

Transforming growth factor beta1 (TGF-ß1) levels in a rat model of induced pleural empyema

Abstract Purpose: To evaluate the concentration of transforming growth factor beta 1 (TGFB1) levels in a rat pleural effusion obtained by inoculation of intrapleural bacteria or turpentine through thoracentesis. Methods: Thirty-Nine Wistar rats were divided into three groups: Staphylococcus aureus (SA, n = 17); Streptococcus pneumoniae (SP, n = 12); and turpentine (control, n = 10). Pleural fluid was collected through ultrasound-guided thoracentesis 12 h, 24 h, and 36 h after instillation of bacteria or turpentine. Levels of TGFB1 were measured in pleural fluid. Results: At 12 h, mean TGFB1concentrations were 5.3450 pg/mL in the SA group, 5.3449 pg/mL in the SP group, and 5.3450 pg/mL in controls. At 24 h, they were 4.6700 pg/mL in the SA group, 4.6700 pg/mL in the SP group, and 4.6700 pg/mL in controls. At 36 h, they were 4.6699 pg/mL in the SA group and in control. No difference was observed among the groups in mean TGFB1concentration (p = 0.12); however, a significant intragroup reduction in mean TGFB1 was observed between 12 and 24 h (p < 0.01). Conclusion: The transforming growth factor beta 1 concentrations were not useful as a diagnostic tool or an early marker of infected pleural effusion.

Neumonías necrosantes graves con empiema asociado / Severe necrotizing pneumonias with secondary empyemas

Introducción: Las neumonías necrosantes (NN) con empiema son una enfermedad grave y un desafío multidisciplinario. El objetivo de este estudio es realizar una caracterización epidemiológica y, en forma secundaria, analizar su tratamiento y evolución. Presentación de casos: Se realizó un estudio retrospectivo de una serie de casos consecutivos con NN con empiema que se presentaron en el Hospital Padre Hurtado. Siete (77,8%) eran de sexo masculino. La mediana de edad fue de 53 (rango 21-73) años. El 44% presentaban comorbilidades (diabetes, HTA o enfermedades neurológicas). El 44% presentaban abuso de drogas y 3 estaban en un estado de desnutrición severa. Manejo y evolución: La mediana de tiempo de hospitalización fue de 41 (rango 16-129) días. En 4 pacientes el germen aislado fue un Enterococcus faecalis. Complicaciones torácicas ocurrieron en el 33,3% de los pacientes. Un paciente requirió una lobectomía, un paciente una fenestración y otro paciente falleció. Discusión: Las NN con empiemas son raras. Sin embargo, frente a la asociación de diabetes, desnutrición y abuso de drogas continuaremos viendo estos casos de difícil manejo con elevada morbimortalidad.

Introduction: Necrotizing pneumonia complicated with empyema is a life-threatening condition that challenges multidisciplinary teams. The aim of this study is to perform an epidemiological characterization of these patients, and secondly, analyse their treatment and outcomes. Case presentation: A retrospective analysis of a series of consecutive patients experiencing necrotizing pneumonia with empyema who presented at Hospital Padre Hurtado. Seven (77.8%) were male. The median age was 53 (range 21-73) years. 44% presented with comorbidities (diabetes, high blood pressure, and neurological diseases). 44% presented drug abuse consumption and three (33.3%) were in a state of severe malnutrition. Management and outcome: The median time of hospitalization was 41 (range 16-129) days. Thoracotomies were performed in eight (83.2%) of the patients. In four patients, the isolated bacteria's were Enterococcus faecalis. Thoracic complications occurred in three (33.3%) patients. One patient required a lobectomy, one patient a fenestration and one (11.1%) patient died. Discussion: Necrotizing pneumonias complicated with empyema are rare, however, if there is an association with drug abuse, diabetes and malnutrition, we will continue to see such challenging cases with high morbidity and mortality.

Adult patients with parapneumonic empyema who may not require pleural drainage / Pacientes adultos con empiema paraneumónico que pueden no requerir drenaje pleural

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Ventana torácica y anestesia local en la supuración pleural / Thoracic window and local anesthesia in pleural suppuration

Introducción: la colección purulenta en la cavidad pleural es causa de complicaciones, por procesos infecciosos pulmonares, y de alta mortalidad. Con frecuencia se trata de enfermos con deterioro del estado general, situación que se agrava en enfermos de edades geriátricas. Objetivo: mostrar la experiencia en el uso de la toracostomía con resección costal y anestesia local en el Hospital Universitario Manuel Fajardo para la atención de enfermos con empiema pleural. Métodos: se estudiaron 24 pacientes con empiema pleural atendidos desde enero de 1998 hasta octubre de 2015, con edad avanzada y estado físico precario en el Hospital Universitario Manuel Fajardo a los que se les realizó una ventana pleurocutánea con anestesia local. Resultados: La edad promedio fue de edad 72 años; 75 por ciento presentó enfermedades asociadas. La relación hombre/mujer fue de 3 a 1. La causa más frecuente fue el derrame paraneumónico infestado, 100 por ciento tuvo antecedentes de pleurostomía. Hubo cultivo negativo en 20,8 por ciento pacientes. Los gérmenes más frecuentes fueron el estreptococo, estafilococo y gérmenes gramnegativos. Las costillas resecadas fueron los arcos costales anteriores sexto y séptimo y el tiempo promedio de cierre de las ventanas fue de 8 meses, sin mortalidad quirúrgica. Conclusión: la ventana torácica pleurocutánea es un procedimiento quirúrgico de baja mortalidad, ideal para solucionar una cavidad pleural tabicada con gran utilidad en enfermos de edades geriátricas y con estado físico precario, por la factibilidad de realizarla con anestesia local(AU)

Introduction: pleural cavity purulent collection causes high mortality and complications in lung infections processes. It often comes to patients with deterioration of general condition, a situation muchworsened in patients of geriatric age. Objective: to show the experience in using costal thoracostomy and local anesthesia in care for elderly patients with pleural empyema and poor physical condition. Methods: study carried out in 24 patients with pleural empyema, advanced age and poor physical condition cared for from January 1998 to October 2015 at Comandante Manuel Fajardo University Hospital and who also underwent pleurocutaneous window with local anesthesia. Results: average age was 72 years. The male/female ratio was 3 to 1. 75 percent of the patients presented associated diseases. The most frequent cause was infested parapneumonic effusion. There was pleurostomy history in 100 percent of the cases, negative culture in 20.8 percent, while the most common germs were streptococcus, staphylococcus and gram-negative bacteria. The resected ribs were the sixth and seventh previous costal arches. El average windows closing time was 8 months. There was no surgical mortality. Conclusion: pleurocutaneous thoracic window is a surgical procedure with low mortality, ideal to settle a pleural cavity tabicada with great utility in patients at geriatric age and in precarious physical condition, from the feasibility of being performing under local anesthesia(AU)

Ventana torácica y anestesia local en la supuración pleural / Thoracic window and local anesthesia in pleural suppuration

Introducción: la colección purulenta en la cavidad pleural es causa de complicaciones, por procesos infecciosos pulmonares, y de alta mortalidad. Con frecuencia se trata de enfermos con deterioro del estado general, situación que se agrava en enfermos de edades geriátricas. Objetivo: mostrar la experiencia en el uso de la toracostomía con resección costal y anestesia local en el Hospital Universitario Manuel Fajardo para la atención de enfermos con empiema pleural.Métodos: se estudiaron 24 pacientes con empiema pleural atendidos desde enero de 1998 hasta octubre de 2015, con edad avanzada y estado físico precario en el Hospital Universitario Manuel Fajardo a los que se les realizó una ventana pleurocutánea con anestesia local. Resultados: La edad promedio fue de edad 72 años; 75 por ciento presentó enfermedades asociadas. La relación hombre/mujer fue de 3 a 1. La causa más frecuente fue el derrame paraneumónico infestado, 100 por ciento tuvo antecedentes de pleurostomía. Hubo cultivo negativo en 20,8 por ciento pacientes. Los gérmenes más frecuentes fueron el estreptococo, estafilococo y gérmenes gramnegativos. Las costillas resecadas fueron los arcos costales anteriores sexto y séptimo y el tiempo promedio de cierre de las ventanas fue de 8 meses, sin mortalidad quirúrgica.Conclusión: la ventana torácica pleurocutánea es un procedimiento quirúrgico de baja mortalidad, ideal para solucionar una cavidad pleural tabicada con gran utilidad en enfermos de edades geriátricas y con estado físico precario, por la factibilidad de realizarla con anestesia local(AU)

Introduction: pleural cavity purulent collection causes high mortality and complications in lung infections processes. It often comes to patients with deterioration of general condition, a situation muchworsened in patients of geriatric age. Objective: to show the experience in using costal thoracostomy and local anesthesia in care for elderly patients with pleural empyema and poor physical condition. Methods: study carried out in 24 patients with pleural empyema, advanced age and poor physical condition cared for from January 1998 to October 2015 at Comandante Manuel Fajardo University Hospital and who also underwent pleurocutaneous window with local anesthesia.Results: average age was 72 years. The male/female ratio was 3 to 1. 75 percent of the patients presented associated diseases. The most frequent cause was infested parapneumonic effusion. There was pleurostomy history in 100 percent of the cases, negative culture in 20.8 percent, while the most common germs were streptococcus, staphylococcus and gram-negative bacteria. The resected ribs were the sixth and seventh previous costal arches. El average windows closing time was 8 months. There was no surgical mortality. Conclusion: pleurocutaneous thoracic window is a surgical procedure with low mortality, ideal to settle a pleural cavity tabicada with great utility in patients at geriatric age and in precarious physical condition, from the feasibility of being performing under local anesthesia(AU)

Empiema bilateral secundario a una perforación esofágica espontánea / Bilateral Empyema Due to Spontaneous Esophageal Perforation

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Septicemia hemorrágica y empiema pleural por Pasteurella canis / Pasteurella canis hemorragic sepsis and empyema

We report the case of a 56-year-old female patient, with a three-day history of hematemesis, melena, abdominal wall hematoma and epistaxis associated with thrombocytopenia and anemia. Idiopathic thrombocytopenic purpura was diagnosed and she was treated with dexamethasone for four days. The patient developed acute respiratory failure with signs of systemic inflammatory response. Blood and pleural fluid cultures grew Pasteurella canis. This is the first case, to our knowledge, of P. canis empyema associated with hemorrhagic septicemia without epidemiological background and the third case of septicemia caused by P. canis reported in the literature.

Comunicamos el caso de una mujer de 56 años de edad, con un cuadro clínico de tres días de evolución caracterizado por hematemesis, melena, hematoma en la pared abdominal y epistaxis, asociado a trombocitopenia y anemia. Con un probable diagnóstico de un púrpura trombocitopénico idiopático, se trató con dexametasona por cuatro días. Evolucionó con una insuficiencia respiratoria aguda con signos de respuesta inflamatoria sistémica, por un empiema pleural izquierdo con aislamiento de Pasteurella canis en hemocultivos y líquido pleural. Este es el primer caso, según nuestro conocimiento, de un empiema por P. canis asociado a una septicemia hemorrágica, sin antecedentes epidemiológicos; y tercero de una sepsis por P. canis publicado en el mundo.

Derrame paraneumónico complicado: análisis de 2 cohortes consecutivas tratadas con distinto criterio / Complicated pleural infection: Analysis of 2 consecutive cohorts managed with a different policy

INTRODUCCIÓN: El tratamiento del derrame pleural paraneumónico complicado (DPC) es controvertido. Las principales guías recomiendan el drenaje, pero con el menor nivel de evidencia. Recientes trabajos han observado buenos resultados solo con antibióticos. Hemos comparado retrospectivamente nuestros resultados en 2 cohortes consecutivas de pacientes tratados con distinto criterio: en el grupo 1 (2005-2009, actitud intervencionista) el drenaje se decidía en función de las características del líquido pleural, de acuerdo con las principales guías; en el grupo 2 (2010-2013, actitud conservadora) el drenaje se decidía en función de la evolución clínica del paciente. MÉTODOS: Se revisaron las historias clínicas de los pacientes tratados por DPC entre 2005 y 2013. Las principales variables analizadas fueron la proporción de pacientes drenados y la duración de la estancia hospitalaria. RESULTADOS: Se analizó a 109 pacientes (64 grupo 1 y 45 grupo 2). Se colocó un tubo de drenaje en el 83% de los pacientes del grupo 1 y en el 47% de los del grupo 2 (p < 0,001). La duración media de la estancia hospitalaria fue de 11,4 días en el grupo 1 y 12,3 días en el grupo 2 (p = 0,45). No se observaron otras diferencias destacables. CONCLUSIÓN: Nuestros resultados coinciden con los de otros estudios recientes que han observado una buena evolución en niños tratados solo con antibióticos y cuestionan la necesidad del drenaje en muchos de los niños que presentan un DPC. Son necesarios ensayos clínicos para identificar las circunstancias en las que se puede obtener un beneficio del drenaje en el DPC

INTRODUCTION: The treatment of complicated pleural infection (CPI) is controversial. Clinical guidelines recommend drainage, but with the lowest grade of evidence. Recent reports have observed good outcomes with antibiotics alone. We retrospectively compared the outcomes in two consecutive cohorts treated with different policies: the first treated according to pleural fluid charactersitics (2005-2009, interventional-prone, group 1) and the second according to clinical assessment (2010-2013, conservative-prone, group 2). METHODS: The clinical records of all children treated for CPI in our hospital between 2005 and 2013 were thoroughly reviewed. Primary outcomes were the proportion of children drained and the length of hospital stay (LHS). RESULTS: One hundred and nine patients (64 group 1 and 45 group 2) were analyzed. A chest tube was placed in 83% of patients in group 1 and 47% in group 2 (P<0.001). The mean LHS was 11.4 days for patients in group 1 and 12.3 for patients in group 2 (P=0.45); no differences were observed in other outcomes. CONCLUSION: Our results add to few recent observations reporting good outcomes in many children treated with antibiotics alone and challenge the need to drain most children with CPI. Clinical trials are now needed to identify when a drainage procedure would be useful

Manejo del derrame pleural paraneumónico en adultos / Management of Parapneumonic Pleural Effusion in Adults

Las infecciones pleurales presentan una elevada morbimortalidad, y su incidencia está aumentando en todos los países del mundo y en todos los grupos de edad. No todos los derrames infecciosos son paraneumónicos, y en esos casos, los organismos que se encuentran en el espacio pleural no son los mismos que se observan en las infecciones del parénquima pulmonar. La dificultad diagnóstica radica en saber si un derrame infeccioso evolucionará hacia un derrame complicado/empiema, ya que los métodos diagnósticos utilizados con este fin ofrecen pobres resultados. Los pilares del tratamiento son establecer un diagnóstico precoz e instaurar, lo antes posible, una pauta antibiótica y un drenaje torácico. Este se llevará a cabo, preferiblemente con tubos de pequeño calibre, ante la presencia de determinadas características morfológicas, bacteriológicas y bioquímicas del líquido pleural. El análisis del líquido es el método más fiable para valorar su evolución, sobre todo la determinación del pH. En un subgrupo de pacientes los fibrinolíticos pueden contribuir a mejorar la recuperación, y su combinación con deoxirribonucleasa se relaciona con la obtención de mejores resultados. Si fracasa el tratamiento médico y es necesaria la cirugía, la rentabilidad de la cirugía toracoscópica videoasistida es, al menos, comparable a la decorticación por toracotomía, por lo que esta solamente se realizará si han fallado las técnicas anteriores. Son necesarios más ensayos clínicos que analicen factores que puedan influir sobre los resultados obtenidos para conformar nuevas estrategias diagnósticas y terapéuticas basadas en la evidencia, que proporcionen un manejo más efectivo y estandarizado de esta enfermedad

Pleural infections have high morbidity and mortality, and their incidence in all age groups is growing worldwide. Not all infectious effusions are parapneumonic and, in such cases, the organisms found in the pleural space are not the same as those observed in lung parenchyma infections. The diagnostic difficulty lies in knowing whether an infectious effusion will evolve into a complicated effusion/empyema, as the diagnostic methods used for this purpose provide poor results. The mainstays of treatment are to establish an early diagnosis and to commence an antibiotic regimen and chest drain as soon as possible. This should preferably be carried out with fine tubes, due to certain morphological, bacteriological and biochemical characteristics of the pleural fluid. Fluid analysis, particularly pH, is the most reliable method for assessing evolution. In a subgroup of patients, fibrinolytics may help to improve recovery, and their combination with DNase has been found to obtain better results. If medical treatment fails and surgery is required, video-assisted thoracoscopic surgery (VATS) is, at least, comparable to decortication by thoracotomy, so should only undertaken if previous techniques have failed. Further clinical trials are needed to analyze factors that could affect the results obtained, in order to define new evidence-based diagnostic and therapeutic strategies that provide more effective, standardized management of this disease

Neumonía necrosante con evolución fatal / Necrotizing pneumonia with a fatal outcome

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Infección neumocócica en Pediatría. De la clínica al laboratorio / Pediatric pneumococcal infection. From clinics to laboratory

Streptococcus pneumoniae es uno de los patógenos de mayor relevancia en las enfermedades infecciosas. En estos últimos años hemos desarrollado en el Hospital Virgen del Rocío una línea de investigación sobre la infección neumocócica en Pediatría con un abordaje integral y multidisciplinario. LA introducción de técnicas de serotipación y genotipación molecular en muestras clínicas nos permitió analizar los factores asociados al incremento de la incidencia del empiema pleural pediátrico, que se relacionó con una onda epidérmica por expansión de la clona ST306 del serotipo 1 neumocócico. En un estudio de portadores nasofaríngeos se observaron incrementos significativos de lo largo del tiempo de los serotipos 15B/C y 19ª, que se siguieron con el adloramiento de este último serotipo como causa importante de enfermedad invasora neumocócica en nuestro medio. Finalmente, hemos establecido una línea de colaboración con grupos de investigación básica para el desarrollo de una metodología experimental basada en una combinación de estrategias proteómicas con el objetivo de descubrir nuevos candidatos proteicos para el desarrollo de vacunas y plataformas diagnósticas frente a la infección por S. pneumoniae (AU)

Streptococcus pneumoniae is one of the most important pathogens in infectious diseases. We have been conducting several research projects on pneumococcal infection in children at the University Hospital Virgen del Rocío during recent years and they were based on a multidisciplinary and comprehensive approach. The introduction of molecular techniques allowed to identify the serotypes and genotypes causing pediatric pleural empyema (PPE) and relate these data to disease increasing incidence. This was partly due to clonal expansion of the genotype ST306 associated to pneumococcal serotype 1. Significant increases of serotypes 15B/C and 19A were observed over time in nasopharyngeal carriage and they anticipated the emergence of the latter serotype in pneumococcal invasive disease. Finally, we have been collaborating with basic researchers on the development of a methodology based on a combination of proteomic strategies to identify new protein vaccine candidates and to validate diagnostic platforms for prevention and diagnosis of pneumococcal infectionsv (AU)