Primary Aorto-Appendicular Fistula Accompanied by Infected Penetrating Aortic Ulcer - Case Report.

Primary aorto-appendicular fistulas are extremely rare in clinical practice, and there are only 3 such cases reported in the available literature. The aim of this study is to present the case of a 68-year-old female patient with primary aorto-appendicular fistula accompanied by infected penetrating aortic ulcer (PAU). At the time of her hospital admission, the patient did not demonstrate any typical symptoms.