PMID- 34912622 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20231108 IS - 2168-8184 (Print) IS - 2168-8184 (Electronic) IS - 2168-8184 (Linking) VI - 13 IP - 11 DP - 2021 Nov TI - Delayed Immune Reconstitution Inflammatory Syndrome in an Immunosuppressed Patient With SARS-CoV-2. PG - e19481 LID - 10.7759/cureus.19481 [doi] LID - e19481 AB - Both immune reconstitution inflammatory syndrome (IRIS) and severe coronavirus disease 2019 (COVID-19) are marked by hyperinflammation as a consequence of dysfunction in myeloid cells and increased production of proinflammatory cytokines. Although these features are common to both diseases, their physiopathology remains unclear. Here we report the case of a 63-year-old woman admitted for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. In her clinical course, she developed acute respiratory distress syndrome, probably triggered by the use of granulocyte colony-stimulating factor (G-CSF). We hypothesize that G-CSF unmasked IRIS. CI - Copyright (c) 2021, Garcia-Carretero et al. FAU - Garcia-Carretero, Rafael AU - Garcia-Carretero R AD - Department of Internal Medicine, Mostoles University Hospital, Mostoles, ESP. FAU - Vazquez-Gomez, Oscar AU - Vazquez-Gomez O AD - Department of Internal Medicine, Mostoles University Hospital, Mostoles, ESP. FAU - Ordonez-Garcia, Maria AU - Ordonez-Garcia M AD - Department of Hematology, Mostoles University Hospital, Mostoles, ESP. LA - eng PT - Case Reports DEP - 20211111 PL - United States TA - Cureus JT - Cureus JID - 101596737 PMC - PMC8665849 OTO - NOTNLM OT - breast cancer OT - covid-19 OT - granulocyte colony-stimulating factor OT - immune reconstitution inflammatory syndrome OT - immunosuppression COIS- The authors have declared that no competing interests exist. EDAT- 2021/12/17 06:00 MHDA- 2021/12/17 06:01 PMCR- 2021/11/11 CRDT- 2021/12/16 06:34 PHST- 2021/11/11 00:00 [accepted] PHST- 2021/12/16 06:34 [entrez] PHST- 2021/12/17 06:00 [pubmed] PHST- 2021/12/17 06:01 [medline] PHST- 2021/11/11 00:00 [pmc-release] AID - 10.7759/cureus.19481 [doi] PST - epublish SO - Cureus. 2021 Nov 11;13(11):e19481. doi: 10.7759/cureus.19481. eCollection 2021 Nov.