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Biomedical subjects

B Felson

Publications and source records attributed to B Felson.

At least 37 records · Page 2Linked to original sources
PubMed1984

Idiopathic pulmonary ossification.

Idiopathic pulmonary ossification is an uncommon and asymptomatic disorder of unknown etiology in which trabeculated bone is found in the lung. It is usually mistaken for more serious entities radiographically, most commonly appearing as branching linear shadows of calcific density involving a limited area of the lung and exhibiting very slow progression; however, the shadows may be round or irregular and bulky. Sometimes the trabeculae are recognizable, and occasionally the lungs demonstrate widespread involvement. The authors describe 8 proven cases, including one in which a bone scan revealed uptake by heterotopic bone in the lung.

Diagnosis, Differential↗
PubMed1983

Carcinoma of the lung complicating lipoid pneumonia.

The authors have encountered four cases of oil aspiration pneumonia complicated by carcinoma. Each had a clear-cut history of chronic intake of an oily substance, radiographic changes, and histologically documented oil aspiration pneumonia. Lung cancer later appeared in the involved area. A small number of similar cases also have been reported. The implication is that oil aspiration pneumonitis may induce bronchogenic carcinoma, particularly either the alveolar cell or the squamous cell variety. The radiographic diagnosis of the malignant transformation is difficult, and consequently the prognosis is poor.

Adenocarcinoma, Bronchiolo-Alveolar↗
PubMed1982

The mural nodule in cavitary opportunistic pulmonary aspergillosis.

A common radiographic feature of opportunistic pulmonary aspergillosis is a rounded, cavitary lesion with a nodule projecting into it. This appearance has been given a variety of names, including "air crescent," "meniscus," "target," "bull's-eye," and "peninsula." These signs merely represent different radiographic projections of the cavitary lesion and mural nodule. Similar lesions may also be encountered in other conditions.

Adult↗
PubMed1981

China revisited.

Explore the source record for details and available documents.

China↗
PubMed1980

The juxtaphrenic peak in upper lobe collapse.

Steeple-shaped shadows adjacent to the diaphragm are common in upper lobe collapse due to a variety of causes. They call attention to upper lobe collapse and should not be considered indicative of intrinsic lower lobe abnormality.

Diaphragm↗
PubMed1980

Rounded atelectasis.

A little-known form of collapse, rounded atelectasis, is occasionally seen on chest radiographs. Previous reports are mostly in the German and French literature (Hanke collected more than 50 personal cases). Rounded atelectasis appears as a masslike lesion that often mimics a pulmonary neoplasm. Distinctive features that permit radiographic diagnosis include a rounded or oval shadow 2.5--5 cm in greatest diameter, pleural-based, usually lying along the posterior surface of a lower lobe. The blood vessels near the mass appear to be gathered together in a sheaf as they converge in a curved course toward the mass, much like the tail of a comet. The mass itself is always in contact with a chronically thickened pleura. Five cases of rounded atelectasis have been identified in recent years; three of these are reported here in some detail. Lack of familiarity with this clinically innocuous entity usually leads to a mistaken diagnosis of neoplasm and thoracotomy may be performed.

Aged↗