BACKGROUND: The Streptococcus anginosus group (SAG) play important roles in @entity1729 . It is ordinarily difficult to distinguish them from contaminations as the causative pathogens of @entity1729 because they are often cultured in respiratory specimens. Therefore, it is important to understand the clinical characteristics and laboratory findings of @entity1729 caused by the SAG members. The aim of this study is to clarify the role of the SAG bacteria in @entity1729 . METHODS: A total of 30 @entity1 who were diagnosed with @entity1729 which were caused by the SAG bacteria between January 2005 and February 2015 were retrospectively evaluated. RESULTS: @entity1729 caused by the SAG were mostly seen in male @entity1 with @entity66 and were typically complicated with @entity1143 . Pleural effusion was observed in 22 (73.3%) @entity1 . @entity3509 was observed in half of the 22 @entity1 with @entity1143 . @entity2868 , S. constellatus and S. anginosus were detected in 16 (53.3  %), 11 (36.7  %) and 3 (10.0  %) @entity1 , respectively. Six @entity1 had @entity325 . The duration from the onset of symptoms to the hospital visit was significantly longer in " @entity1997 " @entity1 than in " @entity55 " @entity1 among the 24 @entity1 with single infections, but not among the six @entity1 with @entity325 . The peripheral white blood cell counts of the " @entity55 " @entity1 were higher than those of the " @entity1997 " @entity1 and @entity2868 was identified significantly more frequently in @entity1 with @entity358 ( @entity55 and @entity1997 ) than in @entity1 with @entity2348 . In addition, the @entity1 in whom @entity2868 was cultured were significantly older than those in whom S. constellatus was cultured. CONCLUSIONS: @entity1729 caused by the SAG bacteria tended to be observed more frequently in male @entity1 with @entity66 and to more frequently involve purulent formation. In addition, @entity2868 was mainly identified in elderly @entity1 with having @entity358 complicated with @entity1143 , and the aspiration of oral secretions may be a risk factor in the formation of @entity3509 thoracis associated with @entity55 due to @entity2868 .

The clinical features of XXXX caused by the Streptococcus anginosus group.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity1143 :: ('MESH:D010996', 'Disease') :: ['pleural effusion'] @entity2868 :: ('817', 'Species') :: ['S. intermedius'] @entity1997 :: ('MESH:D008169', 'Disease') :: ['lung abscess'] @entity66 :: ('MESH:D004194', 'Disease') :: ['comorbid diseases'] @entity55 :: ('MESH:D011014', 'Disease') :: ['pneumonia'] @entity3509 :: ('MESH:D004653', 'Disease') :: ['empyema', 'Empyema'] @entity2348 :: ('MESH:D001424', 'Disease') :: ['bacterial pleurisy only'] @entity358 :: ('MESH:D008171', 'Disease') :: ['pulmonary and pleural infections', 'pulmonary infection'] @entity1729 :: ('MESH:D012141', 'Disease') :: ['Respiratory infections', 'respiratory infections'] @entity325 :: ('MESH:D060085', 'Disease') :: ['mixed-infections', 'mixed-infection']
@entity1729 :: (MESH:D012141,Disease) :: ['respiratory infections']
