Arcângelo, JNorte Ramos, SAlves, PTavares, DGouveia, C2020-05-152020-05-152019-07An Pediatr (Barc). 2019 Jul;91(1):42-46http://hdl.handle.net/10400.17/3443Pyogenic sacroiliitis (PSI) is a rare condition that amounts to 1% to 2% of all joint infections in the paediatric age group. Its diagnosis is often difficult and delayed due to its nonspecific signs, symptoms and physical findings. Also, the identification of the causative microorganism is frequently challenging due to a high proportion of negative blood cultures and the risks involved in joint aspiration in this site.spaAdolescentAnti-Bacterial Agents/administration & dosage*Bacteria/isolation & purification*ChildChild, PreschoolFemaleFollow-Up StudiesHospitals, PediatricHumansInfantMaleRetrospective StudiesSacroiliitis/diagnosisTreatment OutcomeHCC ORTHDE ORT PEDHDE IMAHDE INF PEDSacroiliitis/drug therapySacroiliitis/microbiologyjournal article10.1016/j.anpedi.2018.07.017