Large bowel obstruction in a young woman simulating a malignant neoplasm: a case report of actinomyces infection
Related Experiment Video
Updated: May 8, 2026

Murine Appendectomy Model of Chronic Colitis Associated Colorectal Cancer by Precise Localization of Caecal Patch
Published on: August 24, 2019
R Nissi1, R B Blanco Sequeiros, E Lappi-Blanco
1Department of Obstetrics and Gynecology, Oulu University Hospital, University of Oulu, P.O. Box 24, 90029 Oulu, Finland.
Abstract:
Pelvic and intra-abdominal Actinomycosis can be difficult to diagnose preoperatively and it may also mimic many other diseases, including malignancies. We present a patient with pelvic Actinomycosis probably caused by a long-standing intrauterine device (IUD). We emphasize the challenges in diagnostic process and stress that though a rare disease, intra-abdominal Actinomycosis should be suspected in cases with intra-abdominal mass of uncertain etiology. The early recognition may spare the patient from extensive surgical operation.
Insights
Pelvic actinomycosis, often mimicking cancer, can be challenging to diagnose preoperatively. Early suspicion in cases of unexplained abdominal masses, possibly linked to intrauterine devices (IUDs), is crucial for timely treatment and avoiding extensive surgery.
Area of Science:
- Infectious Diseases
- Gynecologic Oncology
- Surgical Pathology
Background:
- Pelvic and intra-abdominal actinomycosis present diagnostic challenges, often mimicking malignancies.
- Actinomycosis is a rare bacterial infection that can cause abscesses and inflammation.
Purpose of the Study:
- To highlight the diagnostic difficulties of pelvic actinomycosis.
- To present a case of pelvic actinomycosis likely associated with a long-standing intrauterine device (IUD).
- To emphasize the importance of considering actinomycosis in intra-abdominal masses of uncertain origin.
Main Methods:
- Case report presentation.
- Review of clinical presentation, diagnostic process, and management.
Main Results:
- The patient presented with pelvic actinomycosis, presumed to be caused by a long-standing IUD.
- Preoperative diagnosis was challenging due to the mimicry of other intra-abdominal pathologies.
Conclusions:
- Intra-abdominal actinomycosis, though rare, should be suspected in patients with intra-abdominal masses of unclear etiology.
- Early recognition of actinomycosis can prevent unnecessary extensive surgical interventions.
- Intrauterine devices (IUDs) are a potential risk factor for pelvic actinomycosis.
Related Concept Videos
Intestinal Obstruction I: Introduction
Appendicitis
Intestinal Obstruction II: Pathophysiology
Assessment of the Rectum and Anus
Rectal Inspection
Begin by inspecting the perianal and anal areas for color, texture, rashes,...
Appendicitis-I: Introduction
Etiology: Appendicitis can arise from various causes, primarily rooted in the obstruction of the appendix lumen. Factors contributing to this obstruction include fecal accumulation, lymphoid hyperplasia and, in...
Inflammatory Bowel Disease II: Crohn's Disease
Inflammatory bowel disease, commonly known as IBD, refers to a collection of disorders that lead to persistent inflammation of the gastrointestinal tract. The two types of IBD are ulcerative colitis, which impacts the colon, and Crohn's disease, which can involve any part of the gastrointestinal segment.
Crohn's disease
Crohn's disease is a chronic, systemic inflammatory bowel disease (IBD) that predominantly affects the gastrointestinal tract. It is marked by transmural...