We report the case of a 49-year-old patient with repeated lung infections. Chest x-rays showed a mass in the posterior basal segment of the right lung. Angiotomography and 3D reconstructions showed a blood supply coming from the descending aorta. The analysis of the surgical specimen confirmed the occurrence of intralobar pulmonary sequestration with a cavitation filled with mucus.

Keywords: Pulmonary sequestration, Pulmonary mass, Radiology

The authors describe a case of fibrodysplasia ossificans progressiva, a hereditary disease characterized by heterotopic ossification of the connective tissues, usually triggered by trauma, resulting in permanent immobility of the joints. Hallux valgus, clinodactyly and short thumbs are the main associated congenital anomalies. Fibrodysplasia ossificans progressiva usually develops during early childhood. Clinical and radiological diagnosis is essential, since invasive procedures exacerbate the disease. Only palliative treatments are available and prevention plays an important role in patients with fibrodysplasia ossificans progressiva.

Keywords: Fibrodysplasia ossificans progressiva, Heterotopic ossification, Hallux valgus, Trauma, Prevention

Traumatic lesions of the lung are common findings in patients with thoracic trauma. These lesions are increasingly diagnosed using computed tomography, mostly due to the fast acquisition time helical techniques that allow evaluation of critically ill patients and an efficient therapeutic management. The authors studied 150 patients with thoracic trauma submitted to computed tomography that demonstrated lung contusions, atelectasies, lacerations and hematomas. Lung contusions were the most frequent lesions appearing as consolidation or ground-glass attenuation areas. Atelectasies, in subsegmentar and compressive patterns, were the second most common lesions observed. Lacerations appeared as consolidations with air or liquid level. Lung hematomas, characterized by round opacities, were the most rare lung lesions seen in only five cases. In this study, blunt thoracic trauma accounted for the majority of 120 cases whereas penetrating trauma occurred in 30 cases. The causes of blunt trauma in decrescent order of frequency were motor vehicle accidents, pedestrian hit by car, falls, motorcycle accidents and trashing. Penetrating traumas were caused by bullets or knives.

Keywords: Lung contusion, Computed tomography, Trauma

Traumatic diaphragmatic rupture is an uncommon condition that has been diagnosed more frequently with the aid of computed tomography, particularly when using helical technique in association with multiplanar reconstructions. This technique allows adoption of an efficient and quick surgical therapeutic approach. The authors studied six patients with traumatic diaphragmatic rupture that were submitted to computed tomography. In four of the patients there was herniation of intraabdominal viscera through a site of rupture in the left diaphragm. The two other patients underwent surgery due to abdominal injuries, which revealed diaphragmatic lesions but no herniation of intraabdominal viscera.

Keywords: Diaphragmatic rupture, Computed tomography, Trauma

This paper presents the results of 50 patients with trauma of the knee submitted to magnetic resonance imaging in the period of January 1996 to December 1997. The appearance and incidence of the main bone lesions were evaluated and correlated with the mechanisms of aggression and with clinical data. Associated lesions were also evaluated. Bone contusions were the most commonly findings encountered and were observed in 38 patients (76%). Osteochondral fractures occurred in five patients (10%) and bone fractures were detected in five patients (10%), of which two were associated with contusions in other adjoining bone compartments. Chondromalacia of the patella was observed only in two patients (4%). We concluded that magnetic resonance imaging is the imaging method of choice for the diagnosis of bone lesions in patients with trauma of the knee.

Keywords: Magnetic resonance imaging. Bone injuries. Trauma. Knee.

Objetivo: A principal utilidade da tomografia por emissão de pósitrons com 18-fluordeoxiglicose (FDG-PET) está no estadiamento do câncer de pulmão. Porém, ela também pode ser utilizada para diferenciar lesões pulmonares indeterminadas, mas seu impacto na ressecção cirúrgica de lesões benignas é desconhecido. O objetivo deste estudo foi comparar a prevalência de lesões benignas em toracotomias feitas por suspeição de câncer de pulmão, antes e após a introdução do FDG-PET, em um centro de referência de cirurgia torácica. Materiais e Métodos: Os autores analisaram, prospectivamente, uma base de dados cirúrgicos de todos os pacientes consecutivos submetidos a toracotomia por câncer de pulmão suspeito ou comprovado e compararam a prevalência de lesões benignas em dois grupos ao longo de dois anos consecutivos, respectivamente antes (grupo I) e depois (grupo II) da introdução da FDG-PET. Resultados: Ressecção cirúrgica foi feita em 1.233 pacientes durante o período do estudo. A prevalência de lesões benignas na cirurgia nos grupos I e II foi similar (44/626 e 41/607, ambas correspondendo a 7%), e também no grupo II, entre aqueles submetidos a FDG-PET e os restantes (21/301 e 20/306 respectivamente, ambos correspondendo a 7%). No grupo II, dos 21 pacientes com lesões benignas submetidos a FDG-PET, 19 tiveram um estudo falso-positivo (valor médio padrão de captação 5.3 [faixa 2.6–12.7]). Desses, respectivamente 13 e 4 pacientes tiveram broncoscopia não diagnóstica e biópsia transtorácica percutânea de pulmão antes da toracotomia. Não houve diferença na proporção de lesões benignas diferentes ressecadas entre o grupo I e aqueles submetidos a FDG-PET no grupo II. Conclusão: A introdução da FDG-PET não alterou a proporção de pacientes submetidos a toracotomia por lesões benignas, principalmente devido à avidez pelo isótopo de algumas lesões não malignas. Tais resultados falsos-positivos devem ser considerados nos casos em que se contempla a possibilidade de ressecção cirúrgica em pacientes com câncer de pulmão não confirmado.

Keywords: Tomografia por emissão de pósitrons; Tomografia computadorizada; Pulmão – lesões benignas ou congênitas; Câncer de pulmão – diagnóstico e estadiamento; Câncer de pulmão – cirurgia.

Hemobilia is a rare cause of gastrointestinal bleeding and uncommon complication in cases of liver trauma. It occurs due to communication between bile ducts and intrahepatic vessels. The authors describe the case of a patient victim of penetrating abdominal injury, who progressed after three months of liver suture with pain, jaundice and gastrointestinal bleeding. Angiography diagnosed right hepatic artery pseudoaneurysm, and embolization procedure was successfully performed.

Keywords: Penetrating hepatic trauma; Hemobilia; Angiography.

Intramural duodenal hematomas secondary to blunt trauma, determining rapid luminal obstruction, are rare, benign lesions and may be confused with obstructive neoplastic conditions (either parietal or produced by extrinsic compression mechanisms). The present report describes a case of post-traumatic intestinal obstruction by an intramural hematoma in the third duodenal segment. Imaging diagnosis and the conservative management of such obstruction are discussed.

Keywords: Hematoma; Blunt abdominal trauma; Intestinal obstruction.

OBJETIVO: Avaliar a completude das fissuras, resposta radiológica ao tratamento e análise quantitativa por TC (AQTC) em população de pacientes com enfisema grave submetidos ao implante de valvas endobrônquicas (VEB). MATERIAIS E MÉTODOS: Foram estudados exames de TC multidetectores de 29 pacientes, realizados com protocolo de baixo dose, cortes finos, sem contraste. Dois radiologistas revisaram, retrospectivamente, os exames em consenso. A completude das fissuras foi estimada em escala de 5% e a resposta radiológica (atelectasia/perda volumétrica do lobo alvo) foi avaliada. AQTC foi realizada nos exames pré e pós-tratamento utilizando programa completamente automático. RESULTADOS: Resposta radiológica positiva foi vista em 16/29 pacientes. Os 13 pacientes sem resposta à TC apresentavam fissuras incompletas e completude média das fissuras obliquas de 72,8%, contra 88,3% no outro grupo. Os resultados mais significativos da AQTC mostraram redução do volume pulmonar (VP) total (média de 542 ml), VP tratado (700 ml) e volume de enfisema (331,4 ml) no grupo com resposta positiva, que também apresentou melhora nos testes funcionais. CONCLUSÃO: O benefício das VEB é maior em pacientes com fissuras completas e que desenvolvem atelectasia lobar. Nos pacientes sem resposta radiológica encontramos maior prevalência de fissuras incompletas e grau de incompletude das fissuras. Nossa AQTC automática detectou as alterações pós-tratamento, principalmente considerado a análise do pulmão tratado.

Keywords: Enfisema; Terapia de colapso pulmonar; Tomografia computadorizada.

Most temporal bone fractures result from high-energy blunt head trauma, and are frequently related to other skull fractures or to polytrauma. Fractures and displacements of ossicular chain in the middle ear represent some of the main complications of temporal bone injury, and hence they will be more deeply approached in the present article. Other types of injuries include labyrinthine fractures, dural fistula, facial nerve paralysis and extension into the carotid canal. Computed tomography plays a fundamental role in the initial evaluation of polytrauma patients, as it can help to identify important structural injuries that may lead to severe complications such as sensorineural hearing loss, conductive hearing loss, dizziness and balance dysfunction, perilymphatic fistulas, facial nerve paralysis, vascular injury and others.

Keywords: Temporal bone trauma; Ossicular injuries; Ossicular trauma.

OBJECTIVE: To identify and analyze the prevalence of cranial computed tomography findings in patients admitted to the emergency unit of Hospital Universitário Cajuru. MATERIALS AND METHODS: Cross-sectional study analyzing 200 consecutive non contrast-enhanced cranial computed tomography reports of patients admitted to the emergency unit of Hospital Universitário Cajuru. RESULTS: Alterations were observed in 76.5% of the patients. Among them, the following findings were most frequently observed: extracranial soft tissue swelling (22%), bone fracture (16.5%), subarachnoid hemorrhage (15%), nonspecific hypodensity (14.5%), paranasal sinuses opacification (11.5%), diffuse cerebral edema (10.5%), subdural hematoma (9.5%), cerebral contusion (8.5%), hydrocephalus (8%), retractable hypodensity /gliosis/ encephalomalacia (8%). CONCLUSION: The authors recognize that the most common findings in emergency departments reported in the literature are similar to the ones described in the present study. This information is important for professionals to recognize the main changes to be identified at cranial computed tomography, and for future planning and hospital screening aiming at achieving efficiency and improvement in services.

Keywords: Computed tomography; Craniocerebral trauma; Imaging diagnosis.

The authors report the case of a patient victim of gunshots, with a very rare complication: venous bullet embolism from the left external iliac vein to the lingular segment of the left pulmonary artery. Diagnosis is made with whole-body radiography or computed tomography. Digital angiography is reserved for supplementary diagnosis or to be used as a therapeutic procedure.

Keywords: Bullet embolism; Trauma; Computed tomography; Pulmonary arteriography.

The present report describes a case where typical findings of traumatic glenohumeral interposition of rotator cuff stumps were surgically confirmed. This condition is a rare complication of shoulder trauma. Generally, it occurs in high-energy trauma, frequently in association with glenohumeral joint dislocation. Radiography demonstrated increased joint space, internal rotation of the humerus and coracoid process fracture. In addition to the mentioned findings, magnetic resonance imaging showed massive rotator cuff tear with interposition of the supraspinatus, infraspinatus and subscapularis stumps within the glenohumeral joint. Surgical treatment was performed confirming the injury and the rotator cuff stumps interposition. It is important that radiologists and orthopedic surgeons become familiar with this entity which, because of its rarity, might be neglected in cases of shoulder trauma.

Keywords: Interposition; Rotator cuff; Tear; Trauma; Shoulder; Magnetic resonance imaging.

OBJECTIVE: To evaluate the frequency and types of upper cervical spine injuries in asymptomatic elderly patients undergoing computed tomography (CT) for the investigation of minor head trauma. MATERIALS AND METHODS: This was a prospective study of 2613 asymptomatic elderly patients with minor head trauma seen between January 2015 and December 2016. We adopted a dedicated head CT protocol that included the C1–C2 region. RESULTS: Of the 2613 patients analyzed, 33 (1.26%) had upper cervical spine injuries, corresponding to 8.37% of the 394 patients with trauma-related findings. Of those 33 patients, 6 had C1 fractures and 27 had C2 fractures. The use of 16- and 128-slice scanners increased the CT dose by 25.0% and 23.7%, respectively. CONCLUSION: Inclusion of the C1–C2 region in head CT scans allowed us to identify upper cervical spine injuries in 1.26% of asymptomatic elderly patients with minor head trauma. The protocol evaluated helps detect potentially life-threatening injuries and could be adopted for routine use in elderly individuals with minor head trauma.

Keywords: Craniocerebral trauma; Aged; Aged, 80 and over; Spinal injuries/diagnosis; Cervical vertebrae/injuries; Tomography, X-ray computed.

OBJETIVO: Avaliar os padrões tomográficos relacionados aos agentes etiológicos da pneumonia em pacientes durante o primeiro ano após transplante renal. MATERIAIS E MÉTODOS: Foram analisados dados de prontuários de 956 pacientes submetidos a transplante renal, no período de 2013 a 2018, em um centro transplantador renal do nordeste do Brasil. Nos pacientes que desenvolveram pneumonia, os agentes etiológicos foram classificados em bactérias piogênicas, micobactérias, fungos, vírus e pneumonia polimicrobiana, enquanto os padrões tomográficos foram classificados em consolidação, broncopneumonia, pneumonia intersticial e nódulos e massas. Para verificar associação estatística entre micro-organismos e padrões tomográficos, foi utilizado o teste exato de Fisher, com p < 0,001. RESULTADOS: Foram encontrados 101 casos de pneumonia, dos quais 60 (59,4%) tiveram agente etiológico identificado, sendo as bactérias piogênicas as mais frequentes, detectadas em 22 (36,7%) dos casos. Entre os pacientes com agente causal identificado, o padrão tomográfico predominante foi o de nódulos e massas, identificado em 25 (41,7%) casos. Foi observada associação entre bactérias piogênicas e o padrão de consolidação, fungos com nódulos e massas, bem como entre agentes virais e padrão intersticial. CONCLUSÃO: Foi demonstrada associação estatística entre micro-organismos causadores de pneumonia e padrões tomográficos, informação que pode contribuir para o planejamento da terapia de pacientes transplantados renais.

Keywords: Pneumonia; Transplante de rim; Tomografia computadorizada.