I do not have access to the full text of the NEJM article “Case 1-2026: A 50-Year-Old Woman with Fever and Abdominal Pain,” so I cannot reliably summarize its content without conjecture. Without the original article, I cannot give the exact course of the patient's difficulties, the results of the examinations, the diagnosis or the method of treatment, and I cannot guarantee that any detail would actually be in accordance with the published case. In order for the summary to be factual and verified, it would be necessary to either provide the entire text of the article or its essential parts, from which I can then create the required 6-8 sentences in understandable language for laymen.