Solsona, ÍngridPeralta, SaraBarral, YasminaFabregues Gasol, FranciscoGiménez Bonafé, Pepita2025-06-262025-06-262025-03-162307-8960https://hdl.handle.net/2445/221777Background: Ovarian hyperstimulation syndrome (OHSS) is a life-threatening complication that can occur in the luteal phase or early pregnancy after controlled ovarian stimulation. This case report highlights a unique manifestation of OHSS involving pleural effusion (PE) in a patient without identifiable risk factors. Case summary: A 39-year-old woman who underwent controlled ovarian hyperstimulation for an in vitro fertilization (IVF) cycle experienced dyspnea on the eleventh day of post oocyte retrieval. The diagnosis was severe OHSS with a unique manifestation of PE without ascites. Clinical management involved fluid balance and treatment with albumin, furosemide, thromboembolic prophylaxis, and thoracentesis. A continued drainage of the pleural cavity was performed. The patient had a favorable outcome, and a dichorionic diamniotic gestation passed without incident. Conclusion: OHSS and its potential complications can include respiratory distress and PE, as well as thromboembolic disorders.10 p.application/pdfengcc-by-nc (c) Solsona, Íngrid et al., 2025http://creativecommons.org/licenses/by-nc/4.0/DispneaFecundació in vitroEsterilitatOvarisDyspneaFertilization in vitroInfertilityOvariesinfo:eu-repo/semantics/article7536222025-06-26info:eu-repo/semantics/openAccess40094114