Abnormal size and/or number of the pulmonary and bronchial vessels and lymphatics may mimic pulmonary parenchymal lesions (pseudofibrosis). Abnormalities of the central pulmonary artery, pulmonary vein, thoracic aorta, and brachiocephalic branches may mimic intrathoracic mass lesions (pseudomass lesions). Radiologists should interpret these radiographic findings in the light of other accompanying ...

The classic radiographic appearance of pulmonary aspergilloma is a solid, round, often mobile intracavitary mass. We describe an unusual "cavity-in-cavity" appearance seen on conventional roentgenograms and computed tomography studies in two patients with confirmed pulmonary aspergilloma. We are not aware of any previous report describing such appearance based on literature ...

The classic features of six common pulmonary developmental anomalies have been presented. In addition, several overlap cases, each demonstrating features of more than one anomaly, have been illustrated. Such cases serve to emphasize that pulmonary developmental anomalies exist as a continuum, often frustrating our attempts at discrete classification. Future advances ...

Diffuse pulmonary uptake by bone-seeking radiopharmaceuticals has been reported previously but, in the same patient, would pulmonary uptake of Ga-67 citrate yield clinically meaningful results? A patient with hypercalcemia and renal failure in whom bone scintigraphy demonstrated striking diffuse bilateral pulmonary uptake, but subsequent gallium imaging demonstrated no evidence of ...

A case of a subpleural pulmonary hamartoma demonstrated by computed tomography is presented. The literature on subpleural pulmonary lesions demonstrated by computed tomography is reviewed. Although peripheral pulmonary hamartomas have been well documented, we believe this is the first demonstration of a subpleural location by computed tomography scanning. In the ...

A retrospective study analyzed medical and psychosocial factors associated with the three-year survival rates of clinically stable chronic obstructive pulmonary disease patients enrolled in a pulmonary rehabilitation program. The 69 percent three-year survival rate was similar to rates reported in previous studies. Neither continued cigarette smoking nor psychological variables were ...

We have attempted to summarize current concepts pertaining to the ultrastructural evaluation of epithelial pulmonary neoplasms, with an emphasis in potential clinicopathological correlations. Routine ultrastructural evaluation of the most commonly encountered pulmonary carcinomas seems to provide, in a significant number of cases, additional information that may be of help in ...

Latex casts were made of the pulmonary arteries in 10 normal dogs. These casts were used to measure the angles of deviation of the right and left pulmonary arteries from the pulmonary trunk. The measurements were made in three projections. In both craniocaudal and dorsoventral projections the right pulmonary artery ...

Levels of immunoreactive (IR) human NH2 terminal (HNT) of pro-opiomelanocortin were determined serially in 80 patients with various pulmonary carcinomas, 20 patients with various pulmonary diseases without proven carcinoma, and 32 normal control subjects. Sixty +/- 14% (S.E.) (95% confidence interval) of the patients with proven pulmonary carcinoma had elevated ...

Sheep pulmonary adenomatosis has recently been reported in Canada. The literature is briefly reviewed and an account of the present status of the disease in Canada is described.Sheep pulmonary adenomatosis was first diagnosed in Canada in December 1979 in a first generation descendent of sheep imported from Great Britain. In ...

Pulmonary function criteria for pulmonary resection, other than pneumonectomy, have not been previously described. A series of 500 consecutive pulmonary resections to which specific pulmonary function criteria were applied in determining the amount and the extent of feasible resection of the lung are presented. By application of these criteria, an ...

Transcatheter electrocoagulation (TCEC) has been shown to produce permanent arterial occlusion. This study was performed to evaluate the potential of using TCEC of the pulmonary artery as an experimental model of pulmonary thromboembolism. Fourteen lobar or first-order pulmonary arteries were occluded in ten dogs in the acute studies. Eight pulmonary ...

A new, non-invasive method of measuring pulmonary epithelial damage in man was compared with traditional tests of small-airway function. Pulmonary epithelial permeability was expressed as the half-time clearance from the lung into blood of (99m)Tc-diethylene triaminepenta-acetic acid ((99m)Tc-DTPA) deposited predominantly in the alveoli from an inhaled aerosol.Recovery from abnormal pulmonary ...

Leukemoid reaction with pulmonary carcinoma has been a rare observation. Three cases are presented in detail with possible mechanisms contributing to the production of a leukemoid blood picture.

Two cases of pulmonary lymphatic opacification during lymphangiography in the presence of a normal thoracic duct are reported. The most likely route of filling of the pulmonary lymphatics in the lower lobes is by reversed flow from the thoracic duct through the inferior pulmonary ligament lymphatics. Retrograde flow from the ...

Eleven cases of pulmonary blastoma are presented, the largest series reported from one department to date. The frequency of pulmonary blastoma was found to be 0.5 per cent of all primary lung cancers. The variegated histologic appearance of the tumour and the diverging metastatic pattern are described in detail. In ...

The rationale for a simplified approach to the reporting of intensive therapy unit chest radiographs is presented. Pulmonary shadowing should be reported simply as pulmonary shadowing; histological predictions are unreliable and potentially misleading. One should concentrate on the detection of pneumothorax and the differentiation between pulmonary shadowing, pleural effusion and ...

The part played by certain factors in determining the antibody response in pulmonary echinococcosis has been studied. Five immunodiagnostic procedures were used-complement fixation, latex agglutination, bentonite flocculation, passive haemagglutination, and intradermal tests-and parasitological and pathological examinations were carried out. The number of hydatid cysts had only a small influence on ...

The pregnant baboon feto-placental unit responded to intra-amniotic dexamethasone by a rise in the lecithin-sphingomyelin ratio (L/S ratio) and accelerated pulmonary maturity with evidence of increased amounts of pulmonary surfactant. Metyrapone 11 beta-hydroxylase inhibition of corticoid synthesis prevented the expected rise in the L/S ratio without influencing the normal development ...

The bone scan appearance of hypertrophic pulmonary osteoarthropathy (HPO) in patients with pulmonary neoplasms and a variety of other lesions has been described by several investigators. It is well known that after therapy, the bone scan changes resolve. This report deals with a patient who had no therapy for a ...

Dogs exposed by inhalation to an aerosol of fused aluminosilicate particles containing the radionuclide yttrium 90 developed radiation pneumonitis. The aerosol had a mean aerodynamic diameter of 0.8 to 1.2 mu with a sigma(g) of 1.6 to 1.9. The 36 dogs included in this report received initial lung burdens of ...

A case of pulmonary artery sling in a 1-year-old boy, treated by resection of the left pulmonary artery (LPA) at its origin from the right pulmonary artery (RPA) and reanastomosis of the LPA to the main pulmonary artery (MPA), is reported. In this patient the LPA-MPA anastomosis was demonstrated to ...

Aberrant left pulmonary artery, or pulmonary sling, is a rare variation of the pulmonary vasculature, with only one previous report of the condition being recognized in an adult. In this report a second case recognized de novo in an adult is presented. Both of these adults were evaluated because of ...

Two cases of pulmonary lymphangiectasia associated with Noonan's syndrome are described. Chest films showed diffuse pulmonary intersitial infiltrates from infancy. Lymphangiograms demonstrated obstructive changes and collateral formation in the retroperitoneal, mediastinal, pulmonary, and cervical lymphatics and extensive opacification of the pulmonary and visceral pleural lymphatics. Possible mechanisms and causes of ...

Previous authors have suggested that the radiographic clearing pattern of pulmonary infarction is specific and permits differentiation from pneumonitis. Pulmonary infarcts are said to "shrink" or "melt" and pneumonitis consolidations to clear diffusely. Chest radiographs of 4 patients with angiographically confirmed pulmonary infarction and 5 with slowly resolving pneumonitis were ...

In 1967-68 an age-stratified random sample of 1069 current workers in Quebec asbestos mines and mills was surveyed. Questions concerning rheumatic complaints were included in a modified MRC questionnaire used at that time, and on this basis a rheumatic severity gradient was devised. No relationship could be detected between rheumatic ...

Tryptamine and 5-hydroxytryptamine (5-HT) are equipotent in contracting spiral strips of rat isolated pulmonary artery, in doses between 5 and 20 mug. These 5-HT receptors are blocked by low concentrations (c. 10(-9) M) of both methysergide and morphine. In rat isolated lung perfused via the pulmonary circulation, 5-HT caused increases ...

An experimental method to investigate pulmonary granuloma formation in the guinea pig was established. Animals sensitized to human serum albumin (HSA) and challenged intravenously with HSA covalently linked to Sepharose 2B beads developed a specific granulomatous response. This intense pulmonary arterial, focally necrotizing, but mainly granulomatous inflammatory reaction developed 5 ...

Administration of ultrasonically nebulized mist to 17 patients with obstructive lung disease resulted in a temporary deterioration of mechanical lung function with decreases in vital capacity (VC), forced expired volume in one second expressed as a percentage of VC (FEV(1)%), and compliance and with increased inspiratory and expiratory airway resistance. ...

Results from a correlation survey which compared radiological and physiological findings during life with detailed morbid anatomical findings in the lungs of 247 deceased miners and ex-miners with pneumoconiosis were used to assess the extent and significance of their pulmonary disability.Coal workers' pneumoconiosis usually caused progressive impairment of ventilation, which ...

A case of rapidly growing solitary tumour of the right upper lobe of the lung in a 72-year-old man is presented. It shows the typical histological appearance of a pulmonary blastoma. Only 13 cases were published previously, none from Canada. It is a matter of opinion whether pulmonary blastoma should ...

Thesis (Ph. D.)--University of Iowa, 2004.

These experiments show that it is possible to perform an operation, the object of which is to increase the circumference of the pulmonary orifice without involving much danger to the life of the animal. It is probable that operations of this type may come to be employed in the treatment ...

1. Electrophysiological and histological techniques have been employed to search for pulmonary arterial chemoreceptors in kittens and cats.

by Charles Denison.

Pulmonary calcifications are fairly common in Western Samoa, but they cannot be attributed entirely to tuberculosis, since they are also produced by certain systemic mycoses and parasitic infestations. Furthermore, in many tropical areas, skin sensitivity to tuberculin is often due to certain unidentified weak sensitizing agents, rather than to the ...

Parasitic infestations in man may cause transient or permanent pulmonary lesions. The lesions occur during migration and evolution of the parasites, during parasitemia, or during the final habitat. These manifestations, though infrequent in Canadian medical practice, present difficulties in diagnosis. Life cycles, mode of entry, and migration of parasites in ...

The nature of postganglionic sympathetic nervous transmission to vascular muscle in vitro was studied using the recurrent cardiac nerve-pulmonary artery preparation of the rabbit. Experiments, similar to those which in other tissues have provided evidence to support a role for acetylcholine at the sympathetic postganglionic nerve-effector cell junction, were carried ...

During a 2(1/2)-year period, in a 360-bed general hospital, three cases of pulmonary actinomycosis were encountered in men aged 38, 47 and 49 years. In each instance the symptoms, signs and radiological and laboratory findings were such as to warrant a presumptive clinical diagnosis of bronchogenic carcinoma. Thoracotomy was performed ...

Thirty-four cases of pulmonary cancer have been studied by the methds of spirametry and temporary unilateral pulmonary occlusion with and temporary unilateral pulmonary occlusion with and without exercise. The prognostic significance of cardiopulmonary function for resectional treatment was re-evaluated by thesemans, and the functional indication values, which had been reported ...

These experiments show that it is possible to perform an operation, the object of which is to increase the circumference of the pulmonary orifice without involving much danger to the life of the animal. It is probable that operations of this type may come to be employed in the treatment ...

by George Bodington.

by Benjamin W. Richardson.