Caspofungin for Pneumocystis Pneumonia in PLWHIV.

Inclusion Criteria: * Diagnosis of probable or proven PCP, according to its diagnostic classification (refer to classification at the end of this section). * Have clinical laboratory and virological diagnostic laboratory studies at the time of admission. * Classification criteria for Pneumonia by P. jirovecii according to Robert-Gangneux et al.: Proven: Confirmation by pathology or microbiology. Possible: Presence of three out of four clinical or radiological criteria. Probable: Presence of one clinical or radiological criterion without another identified microorganism. Exclusion Criteria: * With a treatment switch to caspofungin after day 7 of treatment initiation (applies only to group B). * Patients who have developed an additional opportunistic lung infection during their hospitalization, other than cytomegalovirus pneumonitis or SARS-CoV-2 pneumonia.