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Dermatomyositis as the Initial Presentation of Small Cell Lung Cancer: A Case Report

小細胞肺癌患者以皮肌炎症候為初始臨床表現

摘要


皮肌炎為一自體免疫疾病,以近端肢體無力及典型皮膚病灶為表徵。皮肌炎患者伴有較高的惡性腫瘤發生率。在本文中,我們報告一44歲男性,以逐漸惡化之皮膚紅疹及近端肢體無力為初始臨床表徵,經檢查後診斷為皮肌炎。經免疫抑制治療後皮肌炎症狀改善有限。在後續之胸部X才發現右側肺門有結節,經支氣管鏡切片確診為小細胞肺癌。在經過化學治療後,皮膚病灶及肌肉無力症狀明顯改善。因皮肌炎可能為一腫瘤旁症候群,此病例提醒我們在病人診斷皮肌炎時,需對病人做詳細之身體檢查。

關鍵字

皮肌炎 小細胞肺癌

並列摘要


Dermatomyositis is an inflammatory connective-tissue disease characterized by proximal muscle weakness and typical cutaneous lesions. Patients with dermatomyositis have an increased risk of malignancies. Here, we present the case of a 44-year-old male with progressive cutaneous rashes and proximal muscle weakness. He was diagnosed as having dermatomyositis after work-up. He received treatment with immunosuppressants, but the clinical response was limited. Further chest radiography demonstrated a nodular opacity at the right hilum. Bronchoscopic biopsy was performed and the pathology report revealed small cell lung cancer. After chemotherapy, the cutaneous lesions showed significant improvement. Since dermatomyositis is often a para-neoplastic syndrome, all patients with this disease should undergo complete work-up for malignancy.

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