Herpes simplex virus type 2 pneumonia after bone marrow transplantation: high-resolution CT findings in 3 patients.

Bone marrow transplant recipients have increased prevalence of viral infections, including Herpes simplex pneumonia. The majority of infections are due to HSV type 1. We report the high-resolution CT findings in 3 bone marrow transplant patients with herpes simplex type 2 pneumonia. The most common CT features were focal areas of consolidation seen in 3 patients, and small centrilobular nodules and areas of ground-glass attenuation seen in 2 patients.

[High resolution computed tomography findings in parainfluenza virus pneumonia after bone marrow transplantation: case report]. / Achados de tomografia computadorizada de alta resolução em pneumonia pelo vírus parainfluenza pós-transplante de medula óssea: relato de caso.

Nineteen year-old female patient, who underwent bone marrow transplantation because of chronic myelogenous leukemia, presented with dry cough and coriza sixty-seven days after the procedure. The chest radiograph was normal. The high resolution computed tomography showed a subsegmental air-space consolidation at the periphery of the left inferior lobe and areas of low attenuation at the superior and middle lung zones. The bronchoalveolar lavage demonstrated positive direct fluorescence antibody testing against parainfluenza virus. Treatment with aerolizated ribavirin was instituted during 10 days and the patient showed clinical-radiological improvement.

Pulmonary infections after bone marrow transplantation: high-resolution CT findings in 111 patients.

OBJECTIVE: The purpose of this study was to review the high-resolution CT findings in patients with pulmonary infection after bone marrow transplantation and to determine distinguishing features among the various types of infection. MATERIALS AND METHODS: This study included 111 consecutive bone marrow transplant recipients who had documented pulmonary infection, high-resolution CT of the chest performed within 24 hr of the beginning of symptoms, and proven diagnosis within 1 week of the onset of symptoms. Two radiologists analyzed the CT scans and reached final decisions regarding the findings by consensus. Statistical analysis was performed using the Fisher's exact test and multivariate analysis; a p value of less than 0.05 was considered statistically significant. RESULTS: The pulmonary infections were due to viruses (n = 57), bacteria (n = 26), fungi (n = 21), and protozoa (n = 1). Six patients had more than one organism responsible for the infection. Nodules that were 1 cm or more in diameter were seen in 13 (62%) of 21 patients with fungal pneumonia, five (19%) of 26 patients with bacterial pneumonia (p = 0.0059), three (10%) of 30 with respiratory syncytial virus (RSV) pneumonia (p = 0.0001), and three (14%) of 22 with cytomegalovirus pneumonia (p = 0.0016). The halo sign was present in 10 of 21 patients with fungal pneumonia, two of 26 with bacterial pneumonia (p = 0.0026), three of 30 with RSV pneumonia (p = 0.0036), and one of 22 with cytomegalovirus pneumonia (p = 0.0015). There was no statistically significant difference in the prevalence of the other CT patterns including small nodules, ground-glass attenuation, and air-space consolidation among viral, bacterial, and fungal infections (all p > 0.05). CONCLUSION: The presence of large nodules and visualization of the halo sign are most suggestive of fungal infection. Other high-resolution CT patterns are not helpful in distinguishing among the various types of infection seen in bone marrow transplant recipients.

Esclerose sistêmica progressiva: aspectos na tomografia computadorizada de alta resolução / Progressive systemic sclerosis: high-resolution computed tomography findings

OBJETIVO: Descrever os achados de tomografia computadorizada de alta resolução de pacientes com esclerose sistêmica pulmonar, independentemente dos sintomas respiratórios. MATERIAIS E MÉTODOS: Foram revisados 73 exames de tomografia computadorizada de alta resolução de 44 pacientes com diagnóstico de esclerodermia estabelecido através de critérios clínicos e laboratoriais. Os exames foram revisados por dois radiologistas, que estabeleceram os achados por consenso. RESULTADOS: Em 91,8 por cento (n = 67) dos exames observaram-se alterações. Os principais achados foram lesões de padrão reticular (90,4 por cento), opacidades em vidro-fosco (63 por cento), bronquiectasias e bronquiolectasias de tração (56,2 por cento), dilatação esofagiana (46,6 por cento), faveolamento (28,8 por cento) e sinais de hipertensão pulmonar (15,6 por cento). Na maioria dos casos as lesões eram bilaterais (89 por cento) e simétricas (58,5 por cento). Quanto à localização, houve predomínio de lesões basais (91,2 por cento) e periféricas (92,2 por cento). CONCLUSÃO: A esclerose sistêmica progressiva acarreta fibrose pulmonar na maioria dos pacientes, caracterizada principalmente por lesão reticular basal e periférica.

OBJECTIVE: To describe the high-resolution computed tomography findings in the lung of patients with systemic sclerosis, independently of the respiratory symptoms. MATERIALS AND METHODS: Seventy-three high-resolution computed tomography scans of 44 patients with clinical diagnosis of systemic sclerosis were reviewed and defined by the consensus of two radiologists. RESULTS: Abnormalities were seen in 91.8% (n = 67) of the scans. The most frequent findings were reticular pattern (90.4%), ground-glass opacities (63%), traction bronchiectasis and bronchiolectasis (56.2%), esophageal dilatation (46.6%), honeycombing pattern (28.8%) and signs of pulmonary hypertension (15.6%). In most cases the lesions were bilateral (89%) and symmetrical (58.5%). The lesions were predominantly located in the basal (91.2%) and peripheral (92.2%) regions. CONCLUSION: In the majority of the patients, progressive systemic sclerosis can cause pulmonary fibrosis mainly characterized by reticular pattern with basal and peripheral distribution on high-resolution computed tomography.

Sarcoma fibromixóide de baixo grau da parede torácica: relato de caso / Low-grade fibromyxoid sarcoma of the chest wall: a case report

Este relato descreve um caso de sarcoma fibromixóide de baixo grau na parede torácica em uma paciente feminina de 23 anos de idade. A radiografia de tórax e a tomografia computadorizada demonstraram massa heterogênea na região inferior do hemitórax direito, com necrose e focos de calcificação. O exame histológico foi sugestivo de leiomioma, mas a imuno-histoquímica definiu o diagnóstico de sarcoma fibromixóide de baixo grau. A evolução clínica do caso foi boa, apesar dos aspectos de malignidade demonstrados na tomografia computadorizada.

We report the case of a 23-year-old female patient with a low-grade fibromyxoid sarcoma involving the chest wall. The chest radiography and computed tomography scan showed a heterogeneous mass in the lower right hemithorax, with necrosis and calcification foci. Histological examination was suggestive of a leiomyoma but the immunohistochemical study proved to be a low-grade fibromyxoid sarcoma. The clinical outcome of this patient was good, although the computed tomography scan showed signs of malignancy.