Background: Suppurative or phlegmonous gastritis is an uncommon but serious disease, which can be fatal if untreated. The treatment is conservative at first with antibiotic therapy, but a total gastrectomy might be required if the patient is unresponsive to medical treatment and the clinical conditions deteriorate. Case presentation: We present a case of acute suppurative gastritis, the second in the literature to our knowledge not to be fatal in a pregnant woman, caused by group A Streptococcus pyogenes, treated conservatively after an exploratory laparoscopy. The delivery was uncomplicated and the patient recovered well after a long cycle of targeted antibiotic therapy. Conclusion: The rarity of suppurative gastritis may be associated with the difficulty of a prompt diagnosis and high mortality as a result. The aim of this case report is to raise awareness about the importance of an early diagnosis, and it is crucial to avoid treatment delays. The emergency physician, radiologist, and surgeon should be aware of this entity.

Keywords: Suppurative gastritis, gastric abscess, emergency medicine, emergency radiology, case report.