Prospective Multicenter Study of the Role of Positron Emission Mammography (PEM) in Pre-Surgical Planning for Breast Cancer
Overview
- Phase
- Phase 4
- Intervention
- Not specified
- Conditions
- Breast Cancer
- Sponsor
- Naviscan PET Systems
- Enrollment
- 472
- Locations
- 6
- Primary Endpoint
- The primary outcome for this study will be measured by evidence of malignancy on PEM and/or MRI, confirmed by core biopsy or surgery.
- Last Updated
- 16 years ago
Overview
Brief Summary
Women with newly diagnosed breast cancer anticipating breast-conserving surgery are enrolled into the study and will undergo both high-resolution positron emission mammographic (PEM) imaging and contrast-enhanced magnetic resonance imaging (MRI) of the breast(s). The purpose of this study is to determine changes in surgical management resulting from PEM or MRI imaging as compared to conventional imaging and to determine if the changes were appropriate with histopathology as gold standard.
Detailed Description
Breast compression and/or immobilization during positron emission tomographic (PET) imaging has been called positron emission mammography, or "PEM," and the device used to perform the scan has been called a PEM Scanner. This protocol is designed as a prospective multi-center clinical trial to evaluate the role of high resolution PEM, used in combination with the radiotracer 2-\[F-18\]- fluorodeoxyglucose (FDG), in pre-surgical planning in women with newly diagnosed breast cancer who are considered candidates for breast conserving surgery (i.e. lumpectomy) after full workup with mammography, clinical breast exam, and additional US as would normally be performed. Participants will undergo both contrast enhanced MRI and PEM imaging. In order to control for potential bias in interpretation of the second examination (i.e. PEM or MRI), the order of interpretation of these examinations will be randomly assigned at study entry.The primary objective of the study is to determine changes in surgical management resulting from PEM or MRI or both, separately and in conjunction with conventional imaging and to determine whether these changes were appropriate (i.e. to excise malignancy) or inappropriate (e.g. wider excision or mastectomy for what proved to be benign disease).
Investigators
Eligibility Criteria
Inclusion Criteria
- •Women who are 25 years of age or older
- •Newly diagnosed core-biopsy proven breast cancer
- •Has current mammography of all study breasts (within prior 3 months), including magnification views of suspicious calcifications (if any)
- •Recent clinical breast examination (within prior 3 months)
- •Has had full diagnostic workup with breast ultrasound (within prior 3 months) as indicated by mammographic and/or clinical findings
- •Has had percutaneous biopsy of all relevant suspicious findings on mammography, clinical examination, and ultrasound
- •After full diagnostic workup, participant is likely to be a candidate for breast conserving surgery.
- •No contraindications to breast MRI:
- •No pacemaker, aneurysm clip, or other implanted magnetic or ferromagnetic device;
- •No claustrophobia that cannot be controlled by medication with valium, ativan, or other sedative under her physician's orders;
Exclusion Criteria
- •Active lactation or discontinued breastfeeding \< 2 months prior
- •Age less than 25 years
- •Inability to provide informed consent
- •Prior radiation treatment to the affected breast(s)
- •Participant is scheduled for sentinel node procedure using radioactive Tc-99m within 24 hours after the scheduled PEM Flex study
- •Women planning prophylactic mastectomy without histologic confirmation
- •Individuals who are electing to undergo neoadjuvant chemotherapy prior to surgery (Note: Patients with prior contralateral breast cancer receiving chemoprevention with Tamoxifen, Arimidex, or other aromatase inhibitor are eligible)
- •Individuals who have had surgery on the study breast(s) within the past 12 months
- •Breast implant(s) in any study breast(s)
- •Women who have had distant metastatic disease either currently or in the past
Outcomes
Primary Outcomes
The primary outcome for this study will be measured by evidence of malignancy on PEM and/or MRI, confirmed by core biopsy or surgery.
Time Frame: Within 30 days (plus or minus a week) after core biopsy/surgery
Secondary Outcomes
- Risk of false positive examinations with either PEM or MRI imaging with surgery as gold standard(Within the first 30 days (plus or minus 7 days) after surgery)