Chest Pain and Bloody Sputum Mistaken for Lung Cancer; University Student Diagnosed with Rare Autoimmune Disease

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A 19-year-old female university student, experiencing chest pain and coughing up blood, was initially suspected of having lung cancer after multiple 6-7 cm tumor-like lesions were found in her lungs. However, after detailed examination and a biopsy at Changhua Hospital, she was diagnosed with Granulomatosis with Polyangiitis, a rare autoimmune disease. The disease attacks blood vessels, causing organ damage, and is more common in middle-aged and older adults, but this case shows age should not be the sole diagnostic factor. Her condition has stabilized following drug treatment.

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