175.Round pneumonia

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