Abstract

VEIGA, José; SANTOS, Margarida Varela dos  and  DIAS, João Lopes. Pelvic Actinomycosis. Acta Radiol Port [online]. 2022, vol.34, n.2, pp.27-30.  Epub Aug 31, 2022. ISSN 2183-1351.  https://doi.org/10.25748/arp.25172.

Actinomycosis is a rare chronic infection, caused by gram-positive bacteria from the Actinomyces species, which is part of the endogenous flora of the oral cavity, gastrointestinal and female genital tracts. In order to cause infection, disruption of the mucosal barrier is imperative. Long-standing IUD (intra-uterine device) is a risk factor. We, hereby, present a case of a 32-year-old woman who presented with lower abdominal pain and a tender mass. The inflammatory parameters increased progressively. There was a history of IUD usage. Ultrasound, Computed Tomography and Magnetic Resonance Imaging demonstrated a heterogeneous enhancing mass-like extending from the bladder to the rectus abdominis muscle, with restricted diffusion and extensive regional oedema. Aspiration cytology revealed bacteria Parvimonas micra and polymorphonuclear leukocytes. However, the patient underwent surgery and the histopathological findings showed an abscess with microorganisms compatible with Actinomyces.

Keywords : Actinomycosis; Actinomyces; Bacterial infection; Pelvic infection; Intrauterine Device; Magnetic resonance imaging..

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