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Tổng hợp một số bài về các bệnh ngoài ra phần 2  https://dermnetnz.org/topics/atypical-mycobacterial-infection/ Atypical mycobacterial infections are infections caused by a species of mycobacterium other than Mycobacterium tuberculosis, the causative bacteria of pulmonary TB and extrapulmonary TB including cutaneous TB; and Mycobacterium leprae, the cause of leprosy. Atypical mycobacteria may cause many different types of infections, which are divided into the following four clinical syndromes: Pulmonary disease Lymphadenitis Skin and soft tissue disease Disseminated disease https://www.patientcareonline.com/view/hard-purple-nodules-your-dx Non-tender, rock-hard, purple colored nodules on her legs. Nốt sần cứng, màu đỏ tía ở chân. The violaceous color and configuration of the skin lesions suggests which of the following?  A. Mycobacterial infection  B. Cutaneous lymphoma  C. Leukemia cutis  D. All of the above Miiskin apps for skin self-examinations. https://der...