Ruminococcus gnavus is a Gram-positive anaerobe and normal gut commensal in the human host. There have been a small number of reported cases of infections attributed to R. gnavus, and no cases of urogenital infections have previously been published. We describe here a case of bilateral tubo-ovarian abscesses (TOAs) which cultured a pure growth of R. gnavus in a young female with concurrent deep infiltrating endometriosis and evidence of pelvic inflammatory disease. This case provides an insight into the behaviour of R. gnavus as a coloniser of the human host and provides further incentive to investigate its potentially pathogenic role in inflammatory conditions such as pelvic inflammatory disease.

Ruminococcus gnavus是一种革兰氏阳性厌氧菌，是人类宿主中的正常肠道共生菌。有少数报告的由R. gnavus引起的感染病例，之前没有发表过泌尿生殖系统感染病例。我们在这里描述了一个双侧输卵管卵巢脓肿 (TOA) 的案例，该案例在一名年轻女性中培养出纯生长的R. gnavus，并发深部浸润性子宫内膜异位症和盆腔炎性疾病的证据。该案例提供了对R. gnavus作为人类宿主殖民者行为的深入了解，并提供了进一步的动力来研究其在炎症性疾病（如盆腔炎）中的潜在致病作用。