Posterior reversible encephalopathy syndrome (PRES) in mesenteric leiomyosarcoma: A case report.

Background: Posterior reversible encephalopathy syndrome (PRES) is a syndrome characterized by headache, confusion, visual loss and seizures. Many factors influence the appearance of this syndrome, predominantly eclampsia, certain medical treatments and malignant hypertension. Diagnosed by typical transient lesions on magnetic resonance imaging.

Methods: We present a case of mesenteric leiomyosarcoma in a 52 year old woman, who had severe headache, abdominal heaviness, and hypertension. Investigations revealed a mesenteric mass and a Posterior Reversible Encephalopathy Syndrome features on brain MRI, suggesting renin secretion by the tumor, causing the patient's symptoms.

Conclusions: Patient's symptoms disappeared after resection of the tumor, suggesting a renin production cessation.