  A soft tissue density that has a rounded appearance (solid white arrows) is seen in the right midlung field. The patient is a 10-month-old baby who had a cough and fever. This is a characteristic appearance of a round pneumonia, most common in children and frequently due to either Haemophilus, streptococcal, or pneumococcal infection. 右肺中野可见圆形软组织密度影（白色实心箭头所示）。患者10月大，伴咳嗽和发热的症状。这是一例典型的球形肺炎，常见于儿童，由嗜血杆菌、链球菌或肺炎球菌感染导致。 Notes 1. Haemophilus n. 嗜血杆菌 2. streptococcal /ˌstrɛptəˈkɑkəl/ adj. 链状球菌的,链球菌所导致的 Round Pneumonia ·Some pneumonias, mostly in children, can assume a spherical shape on chest radiographs. ·These round pneumonias are almost always posterior in the lungs, usually in the lower lobes. ·Causative agents include Haemophilus influenzae, Streptococcus, and Pneumococcus. ·A round pneumonia could be confused with a tumor mass except that symptoms associated with infection usually accompany the pulmonary findings and tumors are uncommon in children (Fig. 7-6). 球形肺炎： 多见于儿童，在胸片上表现为球形致密影。 球形肺炎多发生于于肺后部、下叶。 病原菌包括：嗜血杆菌、流感、链球菌、肺炎球菌。 球形肺炎和肺肿瘤易混淆。可通过感染的症状和影像表现鉴别。而且肺肿瘤在儿童中不常见。 来源：每天朗读一段医学影像学英语文章 圈主 深圳市人民医院放射科副主任医师杨敏洁 |
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