PMID- 36837534 OWN - NLM STAT- MEDLINE DCOM- 20230228 LR - 20230228 IS - 1648-9144 (Electronic) IS - 1010-660X (Print) IS - 1010-660X (Linking) VI - 59 IP - 2 DP - 2023 Feb 10 TI - Recurrent Exacerbations and Evolution into Polymyositis in a Patient with Interstitial Pneumonia with Autoimmune Features: A Case Report and Literature Review. LID - 10.3390/medicina59020330 [doi] LID - 330 AB - Interstitial pneumonia with autoimmune features (IPAF) is a new disease entity proposed in 2015. Numerous questions regarding IPAF require clarification, including diagnostic criteria, standard managements for stable disease and exacerbation, and prognosis. We report a case of a 67-year-old Asian woman who presented with progressive dyspnea. Chest computed tomography (CT) scans revealed nonspecific interstitial pneumonia. Serologic testing indicated positive anti-Jo-1 without presence of extrathoracic manifestations. An IPAF diagnosis was made after a multidisciplinary discussion. The patient experienced a severe exacerbation requiring mechanical ventilation, and she was successfully salvaged with methylprednisolone pulse therapy and single-dose cyclophosphamide. During the one-year follow-up, she reported bilateral leg muscle weakness with noticeably elevated serum creatine kinase, suggesting polymyositis. The development of malignancy was also noted 15 months after the initial presentation, and the patient eventually died. This report demonstrated successful salvage treatment with glucocorticoid pulse therapy for IPAF with acute exacerbation. However, the maintenance therapy failed to control disease progression. The treatment strategies for exacerbation and stable disease in IPAF remain unknown and need further studies. Given the high risk of evolution into a defined connective tissue disease (CTD), regular evaluation of the clinical features and biomarkers of CTDs is essential for patients with IPAF. FAU - Huang, Chien-Tzu AU - Huang CT AUID- ORCID: 0000-0002-7337-384X AD - Division of Hematology and Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan. FAU - Ou, Tsan-Teng AU - Ou TT AD - Division of Rheumatology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan. FAU - Hsu, Jui-Sheng AU - Hsu JS AD - Department of Medical Imaging, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan. AD - Department of Radiology, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan. FAU - Cheng, Chih-Hung AU - Cheng CH AD - Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan. FAU - Sheu, Chau-Chyun AU - Sheu CC AUID- ORCID: 0000-0002-7979-3749 AD - Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan. AD - Department of Internal Medicine, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan. LA - eng GR - KMUH108-8R17; KMUH109-9R13/Kaohsiung Medical University Hospital/ PT - Case Reports PT - Review DEP - 20230210 PL - Switzerland TA - Medicina (Kaunas) JT - Medicina (Kaunas, Lithuania) JID - 9425208 SB - IM MH - Female MH - Humans MH - Aged MH - *Lung Diseases, Interstitial/etiology MH - *Connective Tissue Diseases/complications/diagnosis MH - *Polymyositis/complications MH - Tomography, X-Ray Computed/methods MH - Prognosis PMC - PMC9962511 OTO - NOTNLM OT - anti-Jo-1 OT - glucocorticoid pulse therapy OT - interstitial pneumonia with autoimmune features OT - polymyositis COIS- The authors declare no conflict of interest. EDAT- 2023/02/26 06:00 MHDA- 2023/03/03 06:00 PMCR- 2023/02/10 CRDT- 2023/02/25 03:33 PHST- 2022/12/31 00:00 [received] PHST- 2023/02/06 00:00 [revised] PHST- 2023/02/08 00:00 [accepted] PHST- 2023/02/25 03:33 [entrez] PHST- 2023/02/26 06:00 [pubmed] PHST- 2023/03/03 06:00 [medline] PHST- 2023/02/10 00:00 [pmc-release] AID - medicina59020330 [pii] AID - medicina-59-00330 [pii] AID - 10.3390/medicina59020330 [doi] PST - epublish SO - Medicina (Kaunas). 2023 Feb 10;59(2):330. doi: 10.3390/medicina59020330.