PMID- 35351746 OWN - NLM STAT- MEDLINE DCOM- 20220331 LR - 20240330 IS - 1757-790X (Electronic) IS - 1757-790X (Linking) VI - 15 IP - 3 DP - 2022 Mar 29 TI - Rapidly enlarging pulmonary mass due to immune reconstitution inflammatory syndrome (IRIS) in an immunocompetent host with pulmonary Cryptococcus neoformans. LID - 10.1136/bcr-2021-247495 [doi] LID - e247495 AB - An immunocompetent man presented with Cryptococcus neoformans disease manifesting as a large pulmonary mass (cryptococcoma). Despite an initial induction course of 4 weeks of liposomal amphotericin B (LAmB), followed by 8 weeks of fluconazole, the cryptococcoma enlarged in size. Ten days into a second course of induction therapy with LAmB and flucytosine, the cryptococcoma markedly increased in size with encroachment on critical vascular structures. Due to concern for immune reconstitution inflammatory syndrome (IRIS), prednisone was added with significant decrease in the size of the mass. To our knowledge, this is the first reported case of pulmonary cryptococcal-IRIS in an immunocompetent host. CI - (c) BMJ Publishing Group Limited 2022. No commercial re-use. See rights and permissions. Published by BMJ. FAU - Tucker, Mollie AU - Tucker M AD - Infectious Diseases, Yale University School of Medicine, New Haven, Connecticut, USA mollie.tucker@yale.edu. FAU - Sheikh, Abdul Majeed AU - Sheikh AM AD - Infectious Diseases, Charlotte Hungerford Hospital, Torrington, Connecticut, USA. FAU - Villanueva, Merceditas S AU - Villanueva MS AUID- ORCID: 0000-0003-1022-7746 AD - Infectious Diseases, Yale University School of Medicine, New Haven, Connecticut, USA. LA - eng PT - Case Reports PT - Journal Article DEP - 20220329 PL - England TA - BMJ Case Rep JT - BMJ case reports JID - 101526291 RN - 8VZV102JFY (Fluconazole) RN - D83282DT06 (Flucytosine) SB - IM MH - *Cryptococcosis/complications/diagnosis/drug therapy MH - *Cryptococcus neoformans MH - Fluconazole/therapeutic use MH - Flucytosine MH - Humans MH - *Immune Reconstitution Inflammatory Syndrome/complications PMC - PMC8966528 OTO - NOTNLM OT - Cryptococcus OT - Immunology OT - Infectious diseases OT - Medical management COIS- Competing interests: MSV was the former PI for Connecticut AIDS Education and Training Center. There are no other competing interests. EDAT- 2022/03/31 06:00 MHDA- 2022/04/01 06:00 PMCR- 2024/03/29 CRDT- 2022/03/30 05:40 PHST- 2022/03/30 05:40 [entrez] PHST- 2022/03/31 06:00 [pubmed] PHST- 2022/04/01 06:00 [medline] PHST- 2024/03/29 00:00 [pmc-release] AID - 15/3/e247495 [pii] AID - bcr-2021-247495 [pii] AID - 10.1136/bcr-2021-247495 [doi] PST - epublish SO - BMJ Case Rep. 2022 Mar 29;15(3):e247495. doi: 10.1136/bcr-2021-247495.