MRI in Diagnosing Solid Tumors of the Eye and Orbit

Inclusion Criteria: * The patient has an orbital mass which needs further diagnostic evaluation before treatment or for monitoring * Able to give informed consent * Return for follow-up visits Exclusion Criteria: * Patients with a lesion \< 2 mm * The patient should not participate in this study is any of the following applies to the patient: the patients has a pacemaker, metallic cardiac valve(s), magnetic material such as surgical clips, implanted electronic infusion pumps or any other condition that would interfere with the MRI, the patient has a stent somewhere in the body, the patient has a history of allergic reaction to any metals, contrast agents, x-ray dyes, the patient has claustrophobia * Patients cannot be pregnant and prisoners will not be considered for the study * Exposure to gadolinium-based contrast agents increases the risk for nephrogenic systemic fibrosis (NSF) in patients with acute or severe renal dysfunction; therefore, patients with the following conditions are excluded from the study: * Acute or chronic severe renal insufficiency (glomerular filtration rate \< 30 mL/min/1.73 m\^2) * Acute renal dysfunction due to the hepato-renal syndrome or in the perioperative liver transplantation period * In order to identify subjects at risk for the development of NSF, the American College of Radiology (http://acr.org) recommends obtaining a medical history and a glomerular filtration rate (GFR) assessment within six weeks of MR imaging in the following p…