Pneumonia, Multiple Pulmonary Infarction and Abscess Caused by a Bamboo Stick Accidentally Piercing into Chest: a Case Misdiagnosed as Pulmonary Tuberculosis / 中国医学科学杂志(英文版)

Computed tomography (CT) examination is the major measure for detecting and diagnosis of foreign bodies in human body. Although CT has high sensitivity in diagnosis of foreign body, some interference factors may still lead to missed diagnosis or misdiagnosis. Here we report a rare case that a bamboo stick accidentally pierced into the left chest of a young man who was drunk and unware of this hurt. The patient experienced cough, chest pain, fever, hemoptysis, and was misdiagnosed as primary and secondary tuberculosis based on chest CT examinations at a local hospital, although no tubercular bacillus detected by sputum smear. He subsequently received anti-tuberculous treatments in the following three years, but no improvement of his symptoms was observed. Until one month before his death, the bamboo stick was detected by spiral CT examination as well as three-dimensional image reconstruction at another hospital. Postmortem examination revealed pneumonia, pulmonary infarction, and abscess as the causes of his death. We analyze the potential reasons of misdiagnosis in this case, aiming to provide reference for the diagnosis and treatment of pulmonary inflammation associated with foreign body in the future.

Enfoque del paciente con cavitación pulmonar / Approach to the patient with lung cavitation / Enfoque do paciente com cavitação pulmonar

Cavitation is a common finding in lung images, secondary to infectious, inflammatory, tumor, and autoimmune conditions, the former being the most common cause in all levels of care and geography. The diagnostic approach must be judicious, integrating the image, with the patient's medical history, personal history, and exposures, as well as the time of evolution of the symptoms; which are key elements for the approach. It is always essential to integrate the clinical findings with the laboratory and the pathology in order to reach an accurate diagnosis and timely treatment, since the isolated image is not enough, given the multiple etiologies described and variety of presentation that make this radiological sign only a premise to the confirmation of an underlying disease.

Una cavitación es un hallazgo común en imágenes pulmonares, secundaria a condiciones infecciosas, inflamatorias, tumorales y autoinmunes, siendo las primeras la causa más común en todos los niveles de atención y geográficos. El abordaje diagnóstico debe ser riguroso, integrando la imagen con la historia clínica del paciente, sus antecedentes personales y exposiciones, así como el tiempo de evolución de los síntomas; estos son elementos clave para el enfoque. Siempre es fundamental integrar los hallazgos clínicos con el laboratorio y la patología para llegar a un diagnóstico preciso y a un tratamiento oportuno, pues la imagen aislada no es suficiente, dadas las múltiples etiologías descritas y la variedad de presentación que hacen de este signo radiológico solo una premisa a la confirmación de una enfermedad subyacente.

Uma cavitação é uma descoberta comum em imagens pulmonares, secundária a condições infecciosas, inflamatórias, tumorais e autoimunes, sendo as primeiras a causa mais comum em todos os níveis de atenção e geográficos. A abordagem diagnóstica deve ser rigorosa, integrando a imagem com a história clínica do paciente, seus antecedentes pessoais e exposições, assim como o tempo de evolução dos sintomas; estes são elementos chave para o enfoque. Sempre é fundamental integrar as descobertas clínicas com o laboratório e a patologia para chegar a um diagnóstico preciso e a um tratamento oportuno, pois a imagem isolada não é suficiente, dadas as múltiplas etiologias descritas e a variedade de apresentação que fazem deste signo radiológico só uma premissa à confirmação de uma doença subjacente.

Pulmón de crack: reporte de caso / Crack Lung: Case Report

Según el reporte mundial de drogas alrededor del 5,6% de la población adulta consumió drogas por lo menos una vez en su vida; de éstos 0,6% padece trastornos provocados por su uso. En Argentina según el estudio realizado por Sedronar (Secretaría de Políticas Integrales sobre Drogas de la Nación Argentina) el 5,3% de la población entre 12 y 65 años consumió cocaína alguna vez en su vida, siendo los niveles estimados en la forma de pasta base del 0,6% con mayor prevalencia en los hombres. En cuanto al crack, la prevalencia de vida representa un 0,2% de la población. La cocaína es una de las drogas ilícitas que tiene mayor repercusión en los diferentes sistemas: cardiovascular, renal, gastrointestinal, sistema nervioso central y respiratorio. El consumo de pasta base de cocaína o crack ha ido en aumento, siendo la forma más usada actualmente por su bajo costo. Las complicaciones cardiológicas son comunes: disfunción y falla cardíaca izquierda, cardiomiopatía (aguda, subaguda y crónica), isquemia o infarto miocárdico, endocarditis, enfermedad coronaria, arritmia, neumopericardio, disección aortica y coronaria, espasmo coronario y trombosis arterial sistémica. Las complicaciones respiratorias se pueden presentar de forma aguda o crónica y dependen de la ruta de administración, la cantidad y la frecuencia del consumo. Dentro de las agudas se incluyen el edema de pulmón no cardiogénico, exacerbaciones de crisis asmática, injuria térmica de la vía aérea, neumotórax, hemorragia alveolar, infarto pulmonar, neumonitis aguda, neumonía eosinofílica aguda, neumonía organizada, opacidades alveolares transitorias, bronquiolitis obliterante, neumomediastino, tromboembolismo pulmonar, angioedema, dolor torácico no cardíaco y dolor pleural. Las complicaciones pulmonares crónicas incluyen la enfermedad intersticial, hipertensión pulmonar, enfisema, tos crónica, derrame pleural eosinofílico, estenosis de la vía aérea y asociación con talcosis. El síndrome de pulmón de Crack es una complicación aguda del consumo de pasta base o crack que se caracteriza por hemorragia alveolar difusa (HAD) y se presenta con infiltrados alveolares que puede progresar a insuficiencia respiratoria.

Incidence and morphological characteristics of the reversed halo sign in patients with acute pulmonary embolism and pulmonary infarction undergoing computed tomography angiography of the pulmonary arteries / Incidência e características morfológicas do sinal do halo invertido em pacientes com tromboembolismo pulmonar agudo e infarto pulmonar submetidos a angiotomografia de artérias pulmonares

ABSTRACT Objective: To determine the incidence of the reversed halo sign (RHS) in patients with pulmonary infarction (PI) due to acute pulmonary embolism (PE), detected by computed tomography angiography (CTA) of the pulmonary arteries, and to describe the main morphological features of the RHS. Methods: We evaluated 993 CTA scans, stratified by the risk of PE, performed between January of 2010 and December of 2014. Although PE was detected in 164 scans (16.5%), three of those scans were excluded because of respiratory motion artifacts. Of the remaining 161 scans, 75 (46.6%) showed lesions consistent with PI, totaling 86 lesions. Among those lesions, the RHS was seen in 33 (38.4%, in 29 patients). Results: Among the 29 patients with scans showing lesions characteristic of PI with the RHS, 25 (86.2%) had a single lesion and 4 (13.8%) had two, totaling 33 lesions. In all cases, the RHS was in a subpleural location. To standardize the analysis, all images were interpreted in the axial plane. Among those 33 lesions, the RHS was in the right lower lobe in 17 (51.5%), in the left lower lobe in 10 (30.3%), in the lingula in 5 (15.2%), and in the right upper lobe in 1 (3.0%). Among those same 33 lesions, areas of low attenuation were seen in 29 (87.9%). The RHS was oval in 24 (72.7%) of the cases and round in 9 (27.3%). Pleural effusion was seen in 21 (72.4%) of the 29 patients with PI and the RHS. Conclusions: A diagnosis of PE should be considered when there are findings such as those described here, even in patients with nonspecific clinical symptoms.

RESUMO Objetivo: Verificar a incidência do sinal do halo invertido (SHI) associado a infartos pulmonares (IP) relacionados ao tromboembolismo pulmonar (TEP) agudo, identificado por angiotomografia (angio-TC) de artérias pulmonares, e demonstrar as principais características morfológicas do SHI. Métodos: Foram avaliadas 993 angio-TCs, após estratificação de risco clínico para TEP entre janeiro de 2010 e dezembro de 2014. TEP foi encontrado em 164 pacientes (16,5%), sendo que três exames foram descartados devido a artefatos de movimentação respiratória. Dos 161 exames restantes, em 75 (46,6%) foram identificadas imagens compatíveis com IP, totalizando 86 lesões; o SHI foi observado em 33 (38,4% dos pacientes) dessas lesões. Resultados: Dos 29 pacientes com lesões características de IP com o SHI, 25 pacientes (86,2%) apresentavam lesão única e 4 (13,8%), lesão dupla. Todas as imagens compatíveis com SHI eram de localização subpleural. Para padronizar a análise, todas as imagens foram interpretadas no plano axial. Em relação à distribuição lobar das 33 lesões, o SHI estava localizado no lobo inferior direito, em 17 (51,5%); no lobo inferior esquerdo, em 10 (30,3%); na língula, em 5 (15,2%) e no lobo superior direito, em 1 (3,0%). Áreas de baixa atenuação no interior dos IPs com o SHI foram observadas em 29 das 33 lesões (87,9%). O SHI apresentava formato ovalado em 24 (72,7%) dos casos e formato arredondado, em 9 (27,3%). Derrame pleural foi encontrado associado aos IP com o SHI em 21 pacientes (72,4%). Conclusões: O achado de imagens com essas características, mesmo em pacientes com sintomatologia inespecífica, deve alertar para a possibilidade do diagnóstico de TEP.

Infected pulmonary infarction case report / Infarto pulmonar infectado. reporte de caso

ABSTRACT Introduction: Pulmonary infarction occurs in 29% to 32% of patients with pulmonary thromboembolism (PTE). The infection of a pulmonary infarction is a complication in approximately 2 to 7% of the cases, which makes it a rare entity. Case Presentation: 49-year-old woman with pleuritic pain in the left hemithorax that irradiated to the dorsal region, associated with dyspnea and painful edema in the left lower limb of two days of evolution. Two weeks prior to admission, the patient suffered from a left knee trauma that required surgical intervention; however, due to unknown reasons, she did not receive antithrombotic prophylaxis. Physical examination showed tachycardia, tachypnea and painful edema with erythema in the left leg. After suspecting a pulmonary thromboembolism, anticoagulation medication was administered and a chest angiotomography was requested to confirm the diagnosis. The patient experienced signs of systemic inflammatory response, and respiratory deterioration. A control tomography was performed, suggesting infected pulmonary infarction. Antibiotic treatment was initiated, obtaining progressive improvement; the patient was subsequently discharged, and continued with anticoagulation medication and follow-up on an outpatient basis. Conclusions: Pulmonary infarction is a frequent complication in patients with PTE. Therefore, infected pulmonary infarction should be suspected in patients with clinical deterioration and systemic inflammatory response. The radiological difference between pulmonary infarction and pneumonia is not easily identified, thus the diagnostic approach is clinical, and anticoagulant and antimicrobial treatment should be initiated in a timely manner.

RESUMEN Introducción El infarto pulmonar ocurre entre un 29 y un 32% de pacientes con tromboembolismo pulmonar (TEP). Por su parte, la infección de un infarto pulmonar complica aproximadamente del 2 al 7% de los casos, lo que hace que el infarto pulmonar infectado sea una entidad poco frecuente. Descripción del caso Mujer de 49 años con dolor pleurítico en hemitórax izquierdo, irradiado a región dorsal, asociado a disnea y edema doloroso de miembro inferior izquierdo de dos días de evolución. Dos semanas antes de su ingreso la paciente sufrió trauma de rodilla izquierda, el cual que requirió intervención quirúrgica; sin embargo, por motivos desconocidos, no recibió profilaxis anti trombótica. En el examen físico se encontró taquicardia, taquipnea y edema doloroso con eritema en pierna izquierda. Al existir alta sospecha de tromboembolia pulmonar se inició anticoagulación y se solicitó angiotomografía de tórax, con la cual fue posible confirmar el diagnóstico. Durante su evolución, la paciente experimentó signos de respuesta inflamatoria sistémica, deterioro respiratorio. Se realizó tomografía de control sugestiva de infarto pulmonar infectado. Se inició antibiótico y la paciente mejoró de forma progresiva; después de esta mejora, fue dada de alta para continuar anticoagulación y seguimiento ambulatorios. Conclusiones El infarto pulmonar es una complicación frecuente en pacientes con TEP. Por lo tanto, debe sospecharse infarto pulmonar infectado en pacientes con deterioro clínico y respuesta inflamatoria sistémica. La diferencia radiológica entre infarto pulmonar y neumonía no es fácil de identificar, su enfoque diagnóstico es clínico y el tratamiento anticoagulante y antimicrobiano debe iniciarse de manera oportuna.

Acute Pulmonary Infarction Complicated with Thromboembolism as the First Manifestation of Hepatocellular Carcinoma

Acute pulmonary infarction by tumoral thromboemboli is an extremely rare fatal complication as the first clinical manifestation of hepatocellular carcinoma (HCC) patient with tumoral thrombi in the inferior vena cava. The treatment method has not been established and shown to very poor prognosis despite of trying various modalities such as anticoagulation, radiotherapy and thromboembolectomy. Here, we describe a 74-year-old man who was diagnosed with HCC that presented as pulmonary thromboembolism and subsequent pulmonary infarction as the first manifestation.

Disseminated staphylococcal infection in an immunocompetent adult: A case report

@#<p style="text-align: justify;">Septic pulmonary embolism is an uncommon disorder in which septic thrombi are mobilized from an infectious nidus and transported in the vascular system of the lungs. We report a case of a 52-year-old immunocompetent female who suffered from septic pulmonary embolism associated with polymyositis, deep venous thrombosis and pericardial effusion. Oxacillin-sensitive staphylococcus aureus (MSSA) was isolated from her sputum. Clinical presentation improved after incision of the muscle abscess and vancomycin treatment.</p>

A Case Report: Cavitary Infarction Caused by Pulmonary Tumor Thrombotic Microangiopathy in a Patient with Pancreatic Intraductal Papillary Mucinous Neoplasm

Pulmonary tumor embolism is commonly discovered at autopsy, but is rarely suspected ante-mortem. Microangiopathy is an uncommon and distinct form of simple tumor pulmonary embolism. Here, we present a 52-year-old male with tumor thrombotic microangiopathy and pulmonary infarction, which might have originated from intraductal papillary mucinous tumor of the pancreas. Multiple wedge-shaped consolidations were found initially and aggravated with cavitation. These CT features of pulmonary infarction were pathologically confirmed to result from pulmonary tumor thrombotic microangiopathy.

Lung Infarction due to Pulmonary Vein Stenosis after Ablation Therapy for Atrial Fibrillation Misdiagnosed as Organizing Pneumonia: Sequential Changes on CT in Two Cases

Pulmonary vein (PV) stenosis is a complication of ablation therapy for arrhythmias. We report two cases with chronic lung parenchymal abnormalities showing no improvement and waxing and waning features, which were initially diagnosed as nonspecific pneumonias, and finally confirmed as PV stenosis. When a patient presents for nonspecific respiratory symptoms without evidence of infection after ablation therapy and image findings show chronic and repetitive parenchymal abnormalities confined in localized portion, the possibility of PV stenosis should be considered.

Extralobar Pulmonary Sequestration with Hemorrhagic Infarction in a Child: Preoperative Imaging Diagnosis and Pathological Correlation

We describe a rare case of extralobar pulmonary sequestration with hemorrhagic infarction in a 10-year-old boy who presented with acute abdominal pain and fever. In our case, internal branching linear architecture, lack of enhancement in the peripheral portion of the lesion with internal hemorrhage, and vascular pedicle were well visualized on preoperative magnetic resonance imaging that led to successful preoperative diagnosis of extralobar pulmonary sequestration with hemorrhagic infarction probably due to torsion.

A Case of Pulmonary Artery Sarcoma Presented as Cavitary Pulmonary Lesions / 결핵및호흡기질환

Pulmonary artery sarcoma (PAS) is a rare, poorly differentiated malignancy arising from the intimal layer of the pulmonary artery. Contrast-enhanced chest computed tomography (CT) is a good diagnostic modality that shows a low-attenuation filling defect of the pulmonary artery in PAS patients. An 18-year-old man was referred to our hospital for the evaluation and management of cavitary pulmonary lesions that did not respond to treatment. A contrast-enhanced CT of the chest was performed, which showed a filling defect within the right interlobar pulmonary artery. The patient underwent a curative right pneumonectomy after confirmation of PAS. Although lung parenchymal lesions of PAS are generally nonspecific, it can be presented as cavities indicate pulmonary infarcts. Clinicians must consider the possibility of PAS as well as pulmonary thromboembolism in patients with pulmonary infarcts. So, we report the case with PAS that was diagnosed during the evaluation of cavitary pulmonary lesions and reviewed the literatures.

Familial Occurrence of Pulmonary Embolism after Intravenous, Adipose Tissue-Derived Stem Cell Therapy

The therapeutic potential of human multipotent mesenchymal stromal cells, especially human adipose tissue-derived stem cells (hASC), is promising. However, there are concerns about the safety of infusion of hASC in human. Recently, we have experienced pulmonary embolism and infarct among family members who have taken multiple infusions of intravenous autologous hASC therapy. A 41-year-old man presented with chest pain for one month. Chest CT showed multiple pulmonary artery embolism and infarct at right lung. Serum D-dimer was 0.8 microg/mL (normal; 0-0.5 microg/mL). He had received intravenous autologous adipose tissue-derived stem cell therapy for cervical herniated intervertebral disc three times (one, two, and three months prior to the visit). His parents also received the same therapy five times and their chest CT also showed multiple pulmonary embolism. These cases represent artificial pulmonary embolisms and infarct after IV injection of hASC. Follow-up chest CT showed spontaneous resolution of lesions in all three patients.

A Case of Pulmonary Infarction Caused by Diffuse Alveolar Damage Confirmed by Open-Lung Biopsy / 대한내과학회지

We report a case of a 63-year-old man with adult respiratory distress syndrome and pulmonary infarction. The patient presented with fever, dyspnea, pleuritic chest pain, and acute respiratory failure, and we applied mechanical ventilation and steroid therapy. Pulmonary infarction and diffuse alveolar damage were confirmed by open-lung biopsy. Diffuse alveolar damage activated the blood coagulation system, resulting in thrombosis in the pulmonary vasculature. After anticoagulation therapy, the patient improved rapidly. We report a rare pulmonary infarction caused by diffuse alveolar damage confirmed by open-lung biopsy.

A Case of Pulmonary Infarction Caused by Diffuse Alveolar Damage Confirmed by Open-Lung Biopsy / 대한내과학회지

We report a case of a 63-year-old man with adult respiratory distress syndrome and pulmonary infarction. The patient presented with fever, dyspnea, pleuritic chest pain, and acute respiratory failure, and we applied mechanical ventilation and steroid therapy. Pulmonary infarction and diffuse alveolar damage were confirmed by open-lung biopsy. Diffuse alveolar damage activated the blood coagulation system, resulting in thrombosis in the pulmonary vasculature. After anticoagulation therapy, the patient improved rapidly. We report a rare pulmonary infarction caused by diffuse alveolar damage confirmed by open-lung biopsy.

A Case of Acute Pulmonary Thromboembolism after Taking Tadalafil / 결핵및호흡기질환

Tadalafil is a phosphodiesterase-5 inhibitor (PDE5I), which is widely used to treat erectile dysfunction. Although PDE5Is have excellent safety profiles, and most of the side effects are mild, rare serious adverse events have been reported in association with PDE5Is. Thrombosis is one of those events, and a few previous reports have suggested the association of PDE5Is with thrombosis. We report the case of a 61-year-old male who developed pulmonary embolism combined with pulmonary infarction directly after taking tadalafil. Both the patient and the physician suspected tadalafil as the culprit drug, as the patient was in an otherwise healthy condition. However, after extensive evaluation, we noticed that factor VIII levels were elevated. Prior reports suggesting the association between thrombosis and PDEIs either lack complete information on coagulation factors, or show inconsistencies in their results. Physicians should operate caution prior to accepting the diagnosis of adverse drug reaction.

Edema agudo de pulmão como manifestação de embolia pulmonar: relato de caso / Pulmonary embolism and infarction presenting as acute pulmonary edema: case report

JUSTIFICATIVA E OBJETIVOS: Apresentação clínica de embolia pulmonar como edema agudo de pulmão é incomum em pacientes sem disfunção sistólica do ventrículo esquerdo.A fisiopatologia do edema agudo de pulmão não cardiogênico associado à embolia pulmonar não está claramente esclarecida.Possíveis mecanismos como aumento da permeabilidade capilar e hiperfluxo em áreas pulmonares com artérias não ocluídas parecemestar envolvidos. O objetivo deste estudo foi relatar um caso de paciente admitida com edema agudo de pulmão causado por embolia e infarto pulmonar.RELATO DO CASO: Paciente do sexo feminino, 67 anos,encaminhada à Sala de Emergência com dispneia súbita e ortopneia. À investigação complementar, radiografia de tórax mostrou edema pulmonar bilateral e a angiotomografia computadorizada revelou embolia associada a áreas de infarto pulmonar.CONCLUSÃO: O relato reforça a importância de incluir embolia pulmonar como um dos diagnósticos diferenciais em pacientes com edema agudo de pulmão de etiologia obscura.(AU)

BACKGROUND AND OBJECTIVES: Pulmonary embolism presenting as pulmonary edema is an uncommon condition in patients without left ventricular systolic dysfunction. Physiopathology of non cardiac pulmonary edema associated with pulmonary embolism is not entirely clear. Blood overflow in parenchymal areas with patent pulmonary arteries and increased capillary permeability are possible mechanisms involved. We report thecase of a patient with acute pulmonary edema caused by pulmonary embolism and infarction.CASE REPORT: Female patient, 67 year-old, referred to our hospital with sudden onset dyspnea and orthopnea. Chest radiography revealed bilateral pulmonary edema and computed tomographic arteriography detected pulmonary embolism associated with areas of pulmonary infarction.CONCLUSION: This report reinforces that pulmonary embolisms hould be considered as a differential diagnosis in acute pulmonary edema with unknown etiology.(AU)

Swan-Ganz Catheter-Induced Pulmonary Artery Rupture and Atelectasis Caused by a Bronchial Thrombus / 대한내과학회지

The use of pulmonary artery catheters has increased considerably since the Swan-Ganz catheter was first introduced in 1970. It is extremely helpful in the management of critically ill patients and in pulmonary hypertension. However, its manipulation carries potential risks, including subclavian or carotid artery laceration, pneumothorax, thoracic duct laceration, phrenic nerve injury, air embolism, arrhythmias, infection, valvular damage, thrombosis, pulmonary infarction, and pulmonary artery rupture. Pulmonary artery rupture, albeit rare, remains a severe complication. Here, we present a patient who developed pulmonary artery rupture and total atelectasis of the left lung after placement of a pulmonary artery catheter.

Swan-Ganz Catheter-Induced Pulmonary Artery Rupture and Atelectasis Caused by a Bronchial Thrombus / 대한내과학회지

The use of pulmonary artery catheters has increased considerably since the Swan-Ganz catheter was first introduced in 1970. It is extremely helpful in the management of critically ill patients and in pulmonary hypertension. However, its manipulation carries potential risks, including subclavian or carotid artery laceration, pneumothorax, thoracic duct laceration, phrenic nerve injury, air embolism, arrhythmias, infection, valvular damage, thrombosis, pulmonary infarction, and pulmonary artery rupture. Pulmonary artery rupture, albeit rare, remains a severe complication. Here, we present a patient who developed pulmonary artery rupture and total atelectasis of the left lung after placement of a pulmonary artery catheter.