Management of Parapneumonic Pleurisy Guided by an Early Pleural Ultrasound

This is a prospective, multicentre, non-randomized study evaluating routine care, which includes all patients hospitalized in the departments participating in the study, for pneumonia with or without pleurisy. Patients benefiting from a daily pleural ultrasound for 96 hours, D1 being the day of hospitalization. The therapeutic course of action will depend on the presence or not, and on the type of pleural effusion according to a pre-established algorithm. In case of pleural effusion of type 1, the type of treatment will be left to the appreciation of the clinician (puncture or drainage), in case of pleural effusion of type 2, 3 or 4 the patient benefited from pleural drainage. Patients included in the study will benefit from a pleural ultrasound on the day of their hospitalization, up to 96 hours after treatment. Ultrasound will then allow us to look for the presence of pleural effusion. In the event of effusion corresponding to a parapneumonic effusion or purulent pleurisy, the conduct to be followed will be defined according to the ultrasound type of effusion. Types 1 will benefit from an evacuating pleural puncture or drainage, depending on the clinician's judgment. Types 2, 3, and 4 will benefit from weeping drainage. the target population: adult patients, hospitalized for pneumonia or confirmed pleurisy, by imaging and exploratory pleural puncture in the departments participating in the study over the period concerned The main outcome measure is the failure of medical treatment, defined as the need to resort to surgery, with or without peeling, or death secondary to pleurisy. The secondary endpoint is the presence of radiological sequelae at 3 months and 6 months defined by a retraction of the hemithorax concerned with pachypleuritis or an ascent of the diaphragmatic dome or the persistence of pleurisy