SESSION TITLE: Wednesday Fellows Case Report Posters SESSION TYPE: Fellow Case Report Posters PRESENTED ON: 10/23/2019 09:45 AM - 10:45 AM INTRODUCTION: Organizing pneumonia is a form of Interstitial lung disease. It has equal prevalence in men and women. Adults 40-60 years are most commonly affected. It can be idiopathic, called cryptogenic organizing pneumonia(COP), or secondary to other factors; secondary organizing pneumonia. CASE PRESENTATION: 77-year-old female with history of hypertension, CHF, COPD presented with 3 weeks of dyspnea. She was hospitalized 3 weeks prior and treated for CAP.CXR at that time demonstrated b/l upper lobe consolidations. She was discharged on 4L O2 and PO cefpodoxime. Pt reported subjective improvement, however she was not back to her baseline. CT chest revealed patchy consolidation in the b/l upper lobes, and multiple nodular opacities in lower lobes. On initial evaluation patient was afebrile, hypoxic, with PaO2:91 on non-rebreather saturating at 95%. WBC count of 8.9. Bronchoscopy was performed. BAL revealed WBC: 693, lymphocytes: 35%, cultures: negative. BAL analysis was supportive of a diagnosis of COP. Biopsy not done due to high FiO2 requirements and unstable condition. Patient was started on prednisone 40 mg x 4 weeks followed by 20 mg x 4 weeks. Patient was lost to follow up, and steroids stopped by PCP. 3 months later she was re hospitalized for hypoxia. CXR showed worsening opacities and she required 5 L O2 via NC. A tapering course of Prednisone was started. Patient seen on follow up at 3 months with resolution of symptoms. DISCUSSION: COP has an insidious onset. Risk factors include infections, connective tissue disease, malignancies, chronic recurrent aspiration, radiation, cocaine etc. The radiographic appearance of COP is variable. On chest CT scan patchy consolidation, is seen in 90% of patients. Nodules and irregular linear opacities or ground-glass attenuation may be seen. Diagnosis is made on history, Imaging, PFTs, Bronchoscopy with BAL and biopsy findings. PFTs may show obstructive vs restrictive defect. DLCO is usually decreased. Typical BAL findings include increases in lymphocytes (20 to 40 percent), neutrophils (5 to 10 percent), and eosinophils (5 to 25 percent). Foamy macrophages, mast cells, and a decreased CD4/CD8 T cell ratio may be seen. BAL neutrophilia (>10%) tends to correlate with relapse. Transbronchial/surgical lung biopsy provides a definitive diagnosis. Patients with minimal symptoms can be monitored without therapy as spontaneous remission may occur. For patients with severe disease: Long term course of steroids: 0.75-1 mg/kg/day for 4-8 weeks then 0.5 mg/kg/day for 4-8 weeks. Most patients respond to therapy with recovery usually occurring in two-thirds of patients. Approximately one-third of patients experience persistent symptoms, abnormalities on pulmonary function testing, and radiographic disease. CONCLUSIONS: Close monitoring is essential to ensure response and completion of therapy, as early discontinuation of steroids may result in recurrence of symptoms. Reference #1: 1. Cordier, J. F. "Cryptogenic organising pneumonia." European Respiratory Journal 28, no. 2 (2006): 422-446. Reference #2: 2. Drakopanagiotakis, Fotios, Koralia Paschalaki, Muhanned Abu-Hijleh, Bassam Aswad, Napoleon Karagianidis, Emmanouil Kastanakis, Sidney S. Braman, and Vlasis Polychronopoulos. "Cryptogenic and secondary organizing pneumonia: clinical presentation, radiographic findings, treatment response, and prognosis." Chest 139, no. 4 (2011): 893-900 Reference #3: 3. Epler, Gary R. "Bronchiolitis obliterans organizing pneumonia: definition and clinical features." Chest 102, no. 1 (1992): 2-6. DISCLOSURES: No relevant relationships by Siddique Chaudhary, source=Web Response No relevant relationships by Bhavna Sharma, source=Web Response No relevant relationships by Paul Kristan Valestra, source=Web Response
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