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 28,634 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Five-week-old specific-pathogen-free chickens inoculated intravenously with a waterfowl-origin type A influenza virus (A/mallard/Ohio/184/86) had swollen and mottled kidneys on days 3, 5, and 7 postinoculation (PI) and multiple raised nodules on days 5, 10, and 20 PI. Histologically, the kidneys had multifocal heterophilic tubulointerstitial nephritis with epithelial necrosis on day 3 PI, lymphoplasmacytic tubulointerstitial nephritis on day 5 PI, and fibrosing interstitial nephritis with cortical lobular collapse, atrophic tubules, glomerular aggregates, and interstitial lymphoid follicles and aggregates on days 7, 10, and 20 PI. Heterophilic intratubular medullary-cone nephritis was present in dead or moribund chickens on days 3 and 5 PI. Furthermore, the presence of mild multifocal heterophilic tubulointerstitial nephritis on day 20 PI suggests that a waterfowl-origin strain of type A influenza virus of low pathogenicity has the potential to produce acute and chronic active nephritis in the chicken and that the kidney is a potential site for influenza viral persistence. The acute, subacute, and chronic histopathologic renal lesions of this influenza virus in chickens are similar to lesions reported for some nephropathogenic infectious bronchitis viruses and avian nephritis picornavirus.
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PMID:Renal pathology in specific-pathogen-free chickens inoculated with a waterfowl-origin type A influenza virus. 214 19

We report the excision of the largest pericardial cyst yet described. Despite causing collapse of the left lower lobe, and bronchitis, an excellent symptomatic result was obtained.
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PMID:Giant pericardial cyst. 239 50

Inoculation of lambs with an ovine isolate of respiratory syncytial virus (RSV) by a combined intranasal and intratracheal route resulted in mild respiratory tract illness, with respiratory tract lesions. Lung lesions were characterized by bronchitis and bronchiolitis, hyperplasia of bronchial and bronchiolar epithelium, peribronchiolar and perivascular accumulations of lymphocytes, alveolar septal thickening, and collapse. Respiratory syncytial virus was recovered from the respiratory tract of inoculated lambs, and RSV antigen was demonstrated by immunoperoxidase staining of bronchiolar and alveolar epithelial cell in pneumonic lesions of lambs euthanatized on post-inoculation days 5 and 6. Other primary respiratory tract pathogens were not isolated. Clinical signs of respiratory tract illness or respiratory tract lesions did not develop in the in-contact control lamb. Inoculation of the ovine RSV isolate into calves and deer fawns resulted in infection in both species, and at necropsy, pneumonic lesions were present. A mild to moderate respiratory tract illness developed in the calves, but clinical disease was not seen in the fawns. Lung lesions in fawns were similar to those seen in lambs; lesions in calves were characterized by collapse, scattered areas of parenchymal necrosis, and bronchiolitis. Respiratory syncytial virus was reisolated from the lower respiratory tract of inoculated calves and fawns, and immunoperoxidase-positive epithelial cells were seen in pneumonic lesions. Other primary respiratory pathogens were not detected. Respiratory syncytial virus infection was not demonstrable in control animals that were in contact with inoculated animals.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Studies on the pathogenesis and interspecies transmission of respiratory syncytial virus isolated from sheep. 317 37

On the basis of a casuistics is referred to the infrequent tracheobronchomegaly with disturbed respiratory mechanics (tracheal collapse) and relapsing bronchitides due to a congenital or acquired loss of elasticity of trachea and main bronchi. Bronchoscopy and bronchography ascertain the diagnosis which may be supposed already on the full-size X-ray by the demonstration of an abnormally wide trachea. The conservative therapy of the in most cases mucopurulent bronchitis for the purpose of the prevention of a global respiratory insufficiency apart from mucolytics often demands the application of antibiotics. In individual cases the prognosis may be improved by stabilizing operative corrections of the trachea and the resection treatment of accompanying bronchiectases.
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PMID:[Tracheobronchomegaly--a case report]. 321 26

Thirteen infants and children with adenovirus type 7 infection proved by virus isolation are described. High fever, cough and dyspnea were the most frequent findings; in infants under 1 year of age wheezing was common. Four patients required artificial ventilation. Lobar collapse, consolidation and hyperinflation were frequent radiologic findings. None of the symptoms responded to antibiotic therapy or bronchodilator drugs. Three patients died (mortality rate of 23%). Pathologic findings were compatible with adenovirus type 7 pneumonia, and were characterized by a necrotizing bronchitis and bronchiolitis, patchy alveolar fibrinopurulent exudate and hyaline membrane formation. Some intra-alveolar epithelial cells showed strikingly abnormal nuclei and rare typical halo-outlined intranuclear inclusions were seen. Only one of eight survivors had evidence of significant chronic chest disease.
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PMID:An outbreak of adenovirus type 7 infection in children in Montreal. 434 82

127 cases of tracheal dyskinesia were seen in infants and children out of which 87 were 1 to 12 months of age. The diagnosis was based on the existence of a collapse reducing the tracheal diameter of more than 50% on endoscopy. Endoscopic examination was performed without general anesthesia. This material represents 5,8% of the patients submitted to this procedure. 85 patients had "primitive" dyskinesia and 42 had major associated abnormalities. Uni or bilateral bronchial dyskinesia was associated in 43% of the cases. The four commonest presenting symptoms were a stridulous or wheezing respiration, recurrent bronchitis, chronic cough, cyanosis. The frequency of associated digestive troubles: gastroesophageal reflux aspiration was noteworthy. Several functional consequences were encountered: hypoxemia, hypercapnia, abnormalities of FRC, increased RL, lowering of dynamic compliance, alterations of perfusion and ventilation on scintiscans. The prognosis was good in primitive cases. Two deaths occurred, in the group with associated abnormalities. The pattern of the patient with primitive dyskinesia and that of the patient with dyskinesia and associated abnormalities are outlined. Some features remarkable in this series of patients are pointed out in a discussion of the pathophysiology of the syndrome. Increased transmural pressure is not a common cause of tracheal dyskinesia and infection as well. The possibility of a temporary intrinsic anomaly of the tracheal wall is suggested. Even if its exact mechanism remains unknown, tracheal dyskinesia is a distinct entity observed in infants and children. It appears as a common cause of recurrent bronchopulmonary disease in the young.
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PMID:[Tracheal dyskinesia (tracheomalacia) in infants and children. Study of 127 cases diagnosed through endoscopic examination (author's transl)]. 626 18

Aspergillosis is a serious pathologic condition caused by Aspergillus organisms and is frequently seen in immunocompromised patients. At computed tomography (CT), saprophytic aspergillosis (aspergilloma) is characterized by a mass with soft-tissue attenuation within a lung cavity. The mass is typically separated from the cavity wall by an airspace ("air crescent" sign) and is often associated with thickening of the wall and adjacent pleura. CT findings in allergic bronchopulmonary aspergillosis consist primarily of mucoid impaction and bronchiectasis involving predominantly the segmental and subsegmental bronchi of the upper lobes. Aspergillus necrotizing bronchitis may manifest as an endobronchial mass, obstructive pneumonitis or collapse, or a hilar mass. Bronchiolitis is characterized by centrilobular nodules and branching linear or nodular areas of increased attenuation ("tree-in-bud" pattern). Obstructing bronchopulmonary aspergillosis mimics allergic bronchopulmonary aspergillosis at CT and manifests as bilateral bronchial and bronchiolar dilatation, large mucoid impactions, and diffuse lower lobe consolidation caused by postobstructive atelectasis. Characteristic CT findings in angioinvasive aspergillosis consist of nodules surrounded by a halo of ground-glass attenuation ("halo sign") or pleura-based, wedge-shaped areas of consolidation. Although imaging findings in pulmonary aspergillosis may be nonspecific, in the appropriate clinical setting, familiarity with the CT findings may suggest or even help establish the diagnosis.
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PMID:Spectrum of pulmonary aspergillosis: histologic, clinical, and radiologic findings. 1145 56

Aspergillus tracheobronchitis is an uncommon clinical form of invasive aspergillosis with fungal infection limited entirely or predominantly to the tracheobronchial tree. We report a case of Aspergillus fumigatus bronchitis, diagnosed by fiberoptic bronchoscopy, with fungal growth completely occluding the left main bronchus leading to lung collapse and acute respiratory failure in a 60-year-old male with erythroleukemia and profound granulocytopenia.
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PMID:Aspergillus bronchitis causing atelectasis and acute respiratory failure in an immunocompromised patient. 1154 91

Because patients with Swyer-James syndrome have almost always been treated conservatively, few reports exist of pathological findings of the lung in this syndrome. We report a case of this rare disease treated surgically and discuss pathological findings. A 36-year-old woman repeatedly contracted bronchitis and pneumothorax since adolescence, until April 26, 1997, when she reported chest pain and dyspnea. Chest X-ray on admission showed left pulmonary collapse with a slight deviation of the mediastinum toward the right. Chest computed tomography showed an apical bulla and emphysematous change in the left upper lobe. Pulmonary arteriography at age 17 showed hypoplasia of left pulmonary artery branches in the left upper lobe. Based on a diagnosis of Swyer-James syndrome, we conducted left upper lobectomy on May 2, 1997. Pathological examination of the resected left upper lobe showed marked emphysematous change, including an emphysematous bulla with destruction of alveolar structure and peribronchiolar fibrosis. No vascular abnormality was recognized in histology. Emphysematous change secondary to repeated bronchiolitis is believed to have led to her repeated pneumothorax.
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PMID:Surgically treated Swyer-James syndrome. 1175 41

Seventeen cases (i.e., 14 dogs and three cats) were identified as having Mycoplasma spp. as the sole bacterial isolate cultured from airway washings in 224 cases evaluated for lower respiratory disease that was present in each case. Primary diagnoses included pneumonia (35.3%), airway collapse (35.3%), and bronchitis (29.4%). Fourteen cases had follow-up information available. Of these cases, eight showed resolution or improvement with antimycoplasmal drugs. Mycoplasma spp. is recognized as a primary cause of respiratory disease in several species, including humans. The relationship between Mycoplasma spp. and respiratory disease detected in some of these cases suggests some Mycoplasma spp. may act as primary pathogens in dogs and cats.
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PMID:Mycoplasmal respiratory infections in small animals: 17 cases (1988-1999). 1190 28


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