[Value of the assay of pleural carcinoembryonic antigen for the diagnosis of neoplastic pleurisy. Correlation with plasma levels and anatomopathological results].

The authors specify the contribution of pleural carcinoembryonic antigen (CEA) assay in the diagnosis of malignant pleuritis by comparing it to plasma concentrations and pathologic findings. 45 patients with pleuritis were studied. Etiology was malignant in 15 and non-malignant in 27.

[Spontaneous pneumomediastinum in adults].

Pneumomediastinum is an uncommon, often overlooked, condition resulting from the rupture of perivascular alveoli and the migration of air along the pulmonary vessels. Diagnosis, which is usually difficult, rests on three major signs: cervical subcutaneous emphysema, Hamman's sign and roentgenological findings. Prognosis is good and the course is uneventful.

[Legionnaires' disease with late pulmonary sequelae. Apropos of a case].

The authors report a case of legionnaires' disease with retractile late sequelae affecting the lingula and the dorsal segment of the culmen. They stress the need for appropriate and prolonged treatment because of the possible presence of intracellular Legionella pneumophila. The existence of an associated staphylococcal infection is also one of the hypotheses raised in explaining such sequelae.