Patients aged 75 and over represent a heterogeneous population with fragile subjects who have a higher risk of poor tolerance to many tests and especially who have a risk of major functional loss in the event of hospitalization. It is therefore necessary to adapt our prescriptions and not to impose on these patients an examination that is unnecessary. Or on the contrary, not to do without, out of ignorance, a minimally invasive examination that could be useful to these patients.

In this study, the investigators wish to evaluate the interest of the Pet-Scan in the therapeutic management of these elderly patients

Inclusion criteria:

• Patient aged 75 years and over,
• Patients cared for at the HUS, in hospital or in consultation, during the defined period (from 01/05/2013 to 31/12/2018)
• Having had an 18FDG-PET/TDM
• For fever or inflammatory syndrome check-ups, regardless of the duration of the evolution and the examinations already carried out
• Patient who has not expressed opposition to the reuse of their data for the purposes of this research.

Exclusion criteria:

• Patient who has expressed opposition to participating in the study
• Known explanation for fever or inflammatory syndrome
• Subjects under legal protection
• Subject under the protection of justice
• Subject under guardianship or curatorship

Translated with www.DeepL.com/Translator

Patient treated at the University Hospitals of Strasbourg for a check-up of fever or inflammatory syndrome, regardless of the duration of the evolution and the examinations already carried out