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Biomedical subjects

B Felson

Publications and source records attributed to B Felson.

At least 19 recordsLinked to original sources
PubMed1979

Mucoid impaction (inspissated secretions) in segmental bronchial obstruction.

Localized persistent mucoid impaction as seen on the chest radiograph is a fairly common roentgen finding that always implies segmental bronchial obstruction. Collateral ventilation apparently permits air to enter the lung distal to the obstruction, outlining bronchi distended with trapped mucus or other secretions. This mucoid impaction sign has been seen in a variety of obstructing conditions, including primary and metastatic carcinoma of the lung, bronchial adenoma, tuberculous bronchostenosis, bronchial adenoma, tuberculous bronchostenosis, broncholithiasis, bronchial atresia, sequestration, pulmonary bronchogenic cyst, and foreign body. The roentgen appearance of the impacted mucus is variable, depending to a considerable degree on its orientation in relation to the direction of the x-ray beam. The presence of unexplained localized mucoid impaction is an indication for immediate study to demonstrate or exclude an obstructing bronchial lesion.

Adenoma↗
PubMed1979

A new look at pattern recognition of diffuse pulmonary disease.

The common practice of describing the histologic distribution of pulmonary lesions from their radiographic patterns is often inaccurate. Recognition of disease entities is more successful if a given pattern is analyzed for its probable causes, rather than by attempting to predict its microscopic distribution. This represents a change in attitude toward the correlation of the radiographic and pathologic findings in disseminated diseases of the lung. The objective of this communication is to enable radiologists to become more secure in recognizing diffuse pulmonary patterns, to understand the shortcomings of this approach, and to stop trying to predict microscopic distribution from the chest radiograph.

Adult↗
PubMed1978

Fractures.

Explore the source record for details and available documents.

Diagnostic Errors↗
PubMed1977

Mycotic tuberculous aneurysm of the thoracic aorta.

Tuberculous mycotic aneurysm has been reported with surprising frequency, especially in the aorta. Because the diagnosis can often be made on clinical and roentgenologic grounds, and because of the very poor prognosis if untreated and surgical curability if recognized, experience with three cases is reported. The aneurysm is generally of the false variety, representing a walled-off perforation of the aorta. Contiguous tuberculosis in the form of lymphadenitis or Pott abscess is generally responsible for the aortic involvement that results in the aneurysm. Miliary tuberculosis, which is often present, is probably a result rather than the cause.

Aged↗