Case Report
Published: May 11, 2025 | DOI: 10.24911/ejmcr.9-1677
From Community-Acquired Pneumonia to Diagnosis of Paraneoplastic Myositis with Pulmonary Involvement - A Case Report
Authors: Joao Faustino , Daniela Alves , Raquel Vieira , Cláudia Rosado
Article Info
Authors
Joao Faustino
Internal Medicine, Unidade Local de Saúde da Região de Aveiro, Aveiro, Portugal
Daniela Alves
Internal Medicine, Unidade Local de Saúde da Região de Aveiro, Aveiro, Portugal
Raquel Vieira
Internal Medicine, Unidade Local de Saúde da Região de Aveiro, Aveiro, Portugal
Cláudia Rosado
Internal Medicine, Unidade Local de Saúde da Região de Aveiro, Aveiro, Portugal
Publication History
Received: January 24, 2025
Accepted: April 14, 2025
Published: May 11, 2025
Abstract
Backgound: Myositis is characterized by proximal muscle weakness/ pain and can affect other organs, with skin involvement being common. Most cases are idiopathic, however it may be part of an autoimmune disease or paraneoplastic syndrome.
Case Report: We present an 82-year-old woman admitted for productive cough, fever and hypoxemia. Blood tests showed important rhabdomyolysis and mild C-reative protein increase. Community-acquired pneumonia was assumed and antibiotic therapy was started. Due to the lack of clinical improvement, a thoracic computed tomography was performed, which revealed not only interstitial lung disease, but also a left breast nodule. Breast nodule biopsy showed breast carcinoma. Staging was carried out with the absence of metastases and the diagnosis of Paraneoplastic Myositis with pulmonary involvement was assumed. Hormone therapy was initiated, followed by left mastectomy. Complete clinical recovery of the patient was obtained.
Conclusions: Interstitial lung disease is the most common and serious complication of inflammatory muscle disease. Complete clinical remission after removal of the neoplasm supported the diagnosis of paraneoplastic syndrome, and the patient continued with hormone therapy after surgery.
Keywords: Myositis; Interstitial Lung Disease; Paraneoplastic Syndrome; Breast Cancer
Pubmed Style
Joao Faustino, Daniela Alves, Raquel Vieira , Cláudia Rosado. From Community-Acquired Pneumonia to Diagnosis of Paraneoplastic Myositis with Pulmonary Involvement - A Case Report. EJMCR. 2025; 11 (May 2025): -. doi:10.24911/ejmcr.9-1677
Web Style
Joao Faustino, Daniela Alves, Raquel Vieira , Cláudia Rosado. From Community-Acquired Pneumonia to Diagnosis of Paraneoplastic Myositis with Pulmonary Involvement - A Case Report. https://ejmcr.com/index.php/articles/1677 [Access: May 15, 2025]. doi:10.24911/ejmcr.9-1677
AMA (American Medical Association) Style
Joao Faustino, Daniela Alves, Raquel Vieira , Cláudia Rosado. From Community-Acquired Pneumonia to Diagnosis of Paraneoplastic Myositis with Pulmonary Involvement - A Case Report. EJMCR. 2025; 11 (May 2025): -. doi:10.24911/ejmcr.9-1677
Vancouver/ICMJE Style
Joao Faustino, Daniela Alves, Raquel Vieira , Cláudia Rosado. From Community-Acquired Pneumonia to Diagnosis of Paraneoplastic Myositis with Pulmonary Involvement - A Case Report. EJMCR. (2025), [cited May 15, 2025]; 11 (May 2025): -. doi:10.24911/ejmcr.9-1677
Harvard Style
Joao Faustino, Daniela Alves, Raquel Vieira , Cláudia Rosado (2025) From Community-Acquired Pneumonia to Diagnosis of Paraneoplastic Myositis with Pulmonary Involvement - A Case Report. EJMCR, 11 (May 2025): -. doi:10.24911/ejmcr.9-1677
Chicago Style
Joao Faustino, Daniela Alves, Raquel Vieira , Cláudia Rosado. "From Community-Acquired Pneumonia to Diagnosis of Paraneoplastic Myositis with Pulmonary Involvement - A Case Report." 11 (2025), -. doi:10.24911/ejmcr.9-1677
MLA (The Modern Language Association) Style
Joao Faustino, Daniela Alves, Raquel Vieira , Cláudia Rosado. "From Community-Acquired Pneumonia to Diagnosis of Paraneoplastic Myositis with Pulmonary Involvement - A Case Report." 11.May 2025 (2025), -. Print. doi:10.24911/ejmcr.9-1677
APA (American Psychological Association) Style
Joao Faustino, Daniela Alves, Raquel Vieira , Cláudia Rosado (2025) From Community-Acquired Pneumonia to Diagnosis of Paraneoplastic Myositis with Pulmonary Involvement - A Case Report. , 11 (May 2025), -. doi:10.24911/ejmcr.9-1677