Revisiting imaging features of rectosigmoid vascular malformation with emphasis on multiparametric MRI: a case report

Abstract Background Gastrointestinal vascular malformations are rare benign neoplasms of the gastrointestinal tract, with rectosigmoid region being most frequently involved site. Patients often manifest recurrent, intermittent rectal bleeding, which might occasionally be life-threatening. Case presentation A 39-year-old man a history hemorrhoid operations twice was presented to our gastroenterology department blood in stool and abdominal pain. After colonoscopy, multiparametric MRI, CT examinations, robotic low anterior resection performed diagnosis venous malformation. The histopathological examination confirmed diagnosis. Conclusion Colonoscopy is preferred method diagnosing malformation, but wrong delayed diagnoses common. Thus, imaging modalities add colonoscopy equivocal cases.