Contrast-Enhanced Ultrasonography in Diagnosing Early-Stage Ovarian Cancer in Patients With an Adnexal Mass Undergoing Surgery to Remove the Ovary

DISEASE CHARACTERISTICS: * Diagnosis of adnexal mass * Scheduled to undergo surgical oophorectomy PATIENT CHARACTERISTICS: * Not pregnant or nursing * Negative pregnancy test * No known respiratory failure as manifested by signs and symptoms of carbon dioxide retention or hypoxemia * No pulmonary vasculitis * No known history of severe emphysema * No known history of pulmonary emboli * No other condition that causes pulmonary hypertension due to compromised pulmonary arterial vasculature * No known history of severe pulmonary hypertension (i.e., systolic pulmonary artery pressures \> 90 mm Hg) * No known history of congenital heart defect that creates a bidirectional or right-to-left shunt * No worsening or clinically unstable congestive heart failure * No known acute myocardial infarction or acute coronary syndromes * No known serious ventricular arrhythmias * Not at high risk for arrhythmia due to prolongation of the QT interval * No known or suspected hypersensitivity to blood, blood products, or albumin * No known hypersensitivity to perflutren * No known or suspected hypersensitivity to octafluoropropane or any other ingredients of perflutren lipid microspheres (Definity®) * No mental status problems, illiteracy, or other circumstance that would preclude giving informed consent PRIOR CONCURRENT THERAPY: * See Disease Characteristics