OBJECTIVE: The present study was aimed at describing the findings on high-resolution computed tomography in patients with exogenous lipoid pneumonia secondary to mineral oil aspiration MATERIALS AND METHODS: Eight adult patients - four men and four women - with mean age of 69.4 years were studied. All of the patients were users of mineral oil for treating intestinal constipation. High-resolution computed tomography studies of these patients were blindly evaluated by two radiologists. RESULTS: Air-space consolidation with areas of fat density and crazy paving pattern were the most frequent findings. The lesions were bilateral in six cases and unilateral in two CONCLUSION: Air-space consolidation with areas of fat density, associated with a clinical history of mineral oil ingestion virtually indicates a diagnosis of exogenous lipoid pneumonia.

Keywords: Exogenous lipoid pneumonia, High-resolution computed tomography, HRCT, Aspiration pneumonia, Lungs

OBJECTIVE: The aim of this study was to evaluate the main findings of computed tomography in patients presenting acute leukemia complicated by angioinvasive aspergillosis. MATERIALS AND METHODS: Computed tomography images of 19 patients were retrospectively studied for the presence of consolidations, nodules and masses, with or without presentation of halo sign, cavitation and air crescent sign. RESULTS: Consolidation was the most frequent finding, occurring in 12 of the 19 cases, most of them presenting the halo sign; cavitation was found in 5 of 12 cases, one of them with air crescent sign. Nodules and masses occurred respectively in six and four cases, most of them with halo sign. Cavitation was found in only one case of mass. Other findings observed were: crazy-paving pattern (two cases), patchy areas of ground-glass attenuation opacity (three cases) and pleural involvement (seven cases) under the form of effusion or thickening. CONCLUSION: Areas of consolidation, mass or nodule, even a solitary one, presenting halo sign on CT images evaluated in an appropriate clinical context are highly suggestive of angioinvasive aspergillosis.

Keywords: Angioinvasive pulmonary aspergillosis, Acute leukemia, Computed tomography

We report the case of a 38-year-old man with pulmonary malaria. High-resolution computed tomography showed thickening of the peribronchovascular interstitium and interlobular septa, areas of consolidation and ground glass attenuation and bilateral pleural effusion suggesting pulmonary edema. The patient recovered well after receiving specific treatment and was discharged after 11 days of hospitalization.

Keywords: Malaria, High-resolution computed tomography, Lungs, Radiology

The purpose of this study is to report the main high-resolution computed tomography findings of two patients with lymphocytic interstitial pneumonia. High-resolution computed tomography findings were correlated with pathology findings of material obtained from open biopsies. One patient had diffuse ground glass opacities seen on high-resolution computed tomography whereas the other patient had peribroncovascular thickening. Anatomopathology studies showed that the main pattern was polyclonal lymphocyte interstitial infiltration, particularly along alveolar septa. The current study demonstrated a close correlation between high-resolution computed tomography and anatomopathology findings.

Keywords: Lymphocytic interstitial pneumonia, High-resolution computed tomography, Anatomopathology