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Introduction. Chronic mesenteric ischemia is a rare entity, with a prevalence of 0.03%, where more than 90% are due to arteriosclerotic disease that mainly affects the superior mesenteric artery. Its symptoms are chronic abdominal pain and weight loss, associated with imaging alterations that make the diagnosis. Treatment depends on the patient's clinical conditions and the number of vessels involved. It is clear that symptomatic multivessel disease requires revascularization. Clinical case. A 67-year-old woman, an active smoker with a history of high blood pressure and dyslipidemia, presented with an emergency-type hypertensive crisis that required management in the Intensive Care Unit. A diagnosis of Crawford IV thoracoabdominal aneurysm, aorto-iliac occlusion (TASC D), and chronic occlusion of the celiac trunk and superior mesenteric artery was made. Due to the symptoms of chronic mesenteric ischemia, she underwent surgical treatment with aorto-bifemoral bypass plus retrograde bypass to the superior mesenteric artery via an open approach. Result. The patient had improvement in symptoms and gained 13% weight at 3-month follow-up. Conclusion. Chronic mesenteric ischemia is an underdiagnosed condition, a marker of cardiovascular risk, with a high burden of morbidity and mortality, in which, with early identification, revascularization therapy can be offered, either endovascularly or open, in order to improve quality of life and weight gain, and avoiding intestinal necrosis. [ABSTRACT FROM AUTHOR]