Accuracy of high-resolution MRI with lumen distention in rectal cancer staging and circumferential margin involvement prediction.

Objective: To evaluate the accuracy of magnetic resonance imaging (MRI) with lumen distention for rectal cancer staging and circumferential resection margin (CRM) involvement prediction.

Materials And Methods: Seventy-three patients with primary rectal cancer underwent high-resolution MRI with a phased-array coil performed using 60-80 mL room air rectal distention, 1-3 weeks before surgery. MRI results were compared to postoperative histopathological findings.

Oesophageal GIST: MDCT findings of two cases and review of the literature.

Introduction: The imaging findings of a gastrointestinal stromal tumour (GIST) have been investigated in various studies; however, the features and the pattern of growth of an oesophageal GIST have been described only in a few reports. We present two cases studied by multidetector computed tomography (MDCT) and we review the literature.

Methods: We describe the diagnostic course and the pattern of presentation at MDCT of two GISTs arising from the oesophageal wall that show two different behaviours and prognosis.