1
|
Evaluation of the role of dynamic 64-MDCT in the characterization and work up of breast cancer. THE EGYPTIAN JOURNAL OF RADIOLOGY AND NUCLEAR MEDICINE 2015. [DOI: 10.1016/j.ejrnm.2015.02.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
2
|
Efficacy and safety of breast radiothermometry in the differential diagnosis of breast lesions. Contemp Oncol (Pozn) 2014; 18:197-203. [PMID: 25520581 PMCID: PMC4268998 DOI: 10.5114/wo.2014.42721] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Revised: 12/19/2013] [Accepted: 02/25/2014] [Indexed: 11/17/2022] Open
Abstract
Aim of the study The aim of this study is to research the contribution of radiothermometry (RTM) to the characterization of breast masses, the differentiation of malignant-benign masses and diagnosis of early stage breast cancer. Material and methods This prospective study comprised 182 cases of patients diagnosed with a breast mass and a control group of 55 cases: a total of 237. Results When histopathology is accepted as the gold standard among diagnostic methods, the sensitivity, specificity, and positive-negative predictive value for RTM were 90.9%, 20.8%, 61.2% and 62.5%, respectively. Consistency was 0.129. When compared with mammography the same values for RTM examination are 87%, 81.4%, 58% and 95.5%. Consistency was 0.582. Evaluating with respect to size of the mass accepting mammography as the gold standard, RTM examination had sensitivity, specificity, positive and negative predictive values for masses 2 cm and above of 88.9%, 83.3%, 88.9% and 83.3%. Consistency was 0.722. The consistency of RTM for lesion diagnosis in BI-RADS II breast structure is higher than the consistency of mammography. Conclusions Identification of lesions in the breast and presence of microcalcification by RTM shows that it is more trustworthy compared to mammography. When compared with mammography the validity results for RTM show there is a good level of conformity between the two methods. When evaluated based on the area below the ROC cure and compared to mammography, RTM is sufficiently successful at evaluating positive and negative cases.
Collapse
|
3
|
Henderson LM, Hubbard RA, Onega TL, Zhu W, Buist DSM, Fishman P, Tosteson ANA. Assessing health care use and cost consequences of a new screening modality: the case of digital mammography. Med Care 2012; 50:1045-52. [PMID: 22922432 PMCID: PMC3650634 DOI: 10.1097/mlr.0b013e318269e0d1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Full-field digital mammography (FFDM) has largely replaced screen-film mammography (SFM) for breast cancer screening, but how this affects downstream breast-related use and costs is unknown. OBJECTIVES To compare breast-related health care use and costs among Medicare beneficiaries undergoing SFM versus FFDM from 1999 to 2005. DESIGN Retrospective cohort study. SUBJECTS Medicare-enrolled women aged 66 and older with mammograms in Breast Cancer Surveillance Consortium registries. MEASURES Subsequent follow-up with additional imaging or breast biopsy within 12 months was ascertained through Medicare claims. Associated mean costs were estimated by screening modality and year, adjusting for confounding factors, and clustering within mammography facilities using Generalized Estimating Equations. RESULTS Among 138,199 women, 332,324 SFM and 22,407 FFDM mammograms were analyzed. Approximately 6.5% of SFM and 9.0% of FFDM had positive findings. In 2001, subsequent imaging was higher among FFDM versus SFM (127.5 vs. 97.4 follow-up mammography claims per 1000 index mammograms), whereas subsequent biopsy was lower among FFDM versus SFM (19.2 vs. 24.9 per 1000 index mammograms) with differences decreasing over time. From 2001 to 2004, mammography subsequent to FFDM had higher mean costs than SFM ($82.60 vs. $64.31 in 2001). The only cost differences between SFM and FFDM for ultrasound or biopsy were in 2001. CONCLUSIONS Subsequent breast-related health care use differed early in FFDM introduction, but diminished over time with differences attributable to higher recall rates for additional imaging and lower rates of biopsy in those undergoing FFDM versus SFM. Remaining cost differences are because of higher reimbursement rates for FFDM versus SFM.
Collapse
Affiliation(s)
- Louise M Henderson
- Department of Radiology, School of Medicine, The University of North Carolina, Chapel Hill, NC 27599-7515, USA.
| | | | | | | | | | | | | |
Collapse
|
4
|
Verschuur-Maes AHJ, van Gils CH, van den Bosch MAAJ, De Bruin PC, van Diest PJ. Digital mammography: more microcalcifications, more columnar cell lesions without atypia. Mod Pathol 2011; 24:1191-7. [PMID: 21572405 DOI: 10.1038/modpathol.2011.81] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The incidence of columnar cell lesions in breast core needle biopsies since full-field digital mammography in comparison with screen-filmed mammography was analyzed. As tiny microcalcifications characterize columnar cell lesions at mammography, we hypothesized that more columnar cell lesions are diagnosed since full-field digital mammography due to its higher sensitivity for microcalcifications. In all, 3437 breast core needle biopsies performed in three hospitals and resulting from in total 55 159 mammographies were revised: 1424 taken in the screen-filmed mammography and 2013 in the full-field digital mammography period. Between the screen-filmed mammography and full-field digital mammography periods, we compared the proportion of mammographies that led to core needle biopsies, the mammographic indication for core needle biopsies (density, microcalcifications, or both) and the proportion of columnar cell lesions with or without atypia. The columnar cell lesions were graded according to Schnitt, and we included atypical ductal hyperplasia arising in the context of columnar cell lesions. Proportions were compared using χ(2) tests and prevalence ratios were adjusted for age and hospital. We found that more core needle biopsies per mammogram were taken in the full-field digital mammography period (7.6%) compared with the screen-filmed mammography period (5.0%, P<0.0001). Microcalcifications were more often diagnosed with full-field digital mammography than with screen-filmed mammography (adjusted prevalence ratio: 1.14, confidence interval 95%: 1.01-1.28). Core needle biopsies from the full-field digital mammography era showed more columnar cell lesions (10.8%) than those from the screen-filmed mammography era (4.9%; adjusted prevalence ratio: 1.93, confidence interval 95%: 1.48-2.51), particularly due to more columnar cell lesions without atypia (8.2% respectively 2.8%) while the proportion of columnar cell lesions with atypia remained nearly constant (2.0 vs 2.6%). In conclusion, since the implementation of full-field digital mammography, more microcalcifications are seen at mammography, more often resulting in core needle biopsies, which especially yields more columnar cell lesions without atypia.
Collapse
|
5
|
Grobmyer SR, Morse DL, Fletcher B, Gutwein LG, Sharma P, Krishna V, Frost SC, Moudgil BM, Brown SC. The promise of nanotechnology for solving clinical problems in breast cancer. J Surg Oncol 2011; 103:317-325. [DOI: 10.1002/jso.21698] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
|
6
|
Patient-Specific Modeling of Breast Biomechanics with Applications to Breast Cancer Detection and Treatment. PATIENT-SPECIFIC MODELING IN TOMORROW'S MEDICINE 2011. [DOI: 10.1007/8415_2011_92] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
7
|
Lipnick S, Liu X, Sayre J, Bassett LW, Debruhl N, Thomas MA. Combined DCE-MRI and single-voxel 2D MRS for differentiation between benign and malignant breast lesions. NMR IN BIOMEDICINE 2010; 23:922-930. [PMID: 20878970 DOI: 10.1002/nbm.1511] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Dynamic contrast-enhanced (DCE) magnetic resonance imaging (MRI) and proton (1H) magnetic resonance spectroscopy (MRS) provide structural and biochemical information, including vascular volume, vascular permeability and tissue metabolism. In this study, we performed analysis of the enhancement characteristic from DCE-MRI and the biochemical information provided by two-dimensional (2D) Localized Correlated Spectroscopy (L-COSY) MRS to determine the sensitivity and specificity of using DCE-MRI alone compared to the combination with 2D MRS. The metabolite ratios from the 2D MRS spectra were analyzed using multivariate statistical analyses to determine a method capable of automatic separation of the patient cohort into malignant and benign lesions. A total of 24 lesions were studied with 21 diagnosed accurately using the enhancement characteristics alone resulting in sensitivity and specificity of 100% and 73%, respectively. Analysis of the 2D MRS data demonstrated a significant difference (p < 0.05) in 12 of 18 metabolite ratios analyzed for malignant compared to benign lesions. Previous research focused on utilizing the choline signal to noise ratio (SNR) as a marker for malignancy has been verified using 2D MRS in this study. Using Fisher's linear discriminant test using water (WAT)/olefinic fat diagonal (UFD), choline (CHO)/fat (FAT), CHO/UFD, and FAT/methyl fat (FMETD) as predictors the sensitivity and specificity increased to 92% and 100%, respectively. Using the Classification and Regression Tree (CART) statistical analysis the resulting sensitivity and specificity were 100% and 91%, respectively, with the most accurate predictor for differentiating malignant and benign determined to be FAT/FMETD. The cases within the study that presented a indeterminate diagnosis using DCE-MRI alone were able to be accurately diagnosed when the metabolic information from 2D MRS was incorporated. The results suggest improved breast cancer detection through the combination of morphological and enhancement information from DCE-MRI and metabolic information from 2D MRS.
Collapse
Affiliation(s)
- Scott Lipnick
- Department of Radiological Sciences, University of California, Los Angeles, CA, USA
| | | | | | | | | | | |
Collapse
|
8
|
Vandenbroucke A, Foudray AMK, Olcott PD, Levin CS. Performance characterization of a new high resolution PET scintillation detector. Phys Med Biol 2010; 55:5895-911. [PMID: 20844332 DOI: 10.1088/0031-9155/55/19/018] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Performance of a new high resolution PET detection concept is presented. In this new concept, annihilation radiation enters the scintillator detectors edge-on. Each detector module comprises two 8 × 8 LYSO scintillator arrays of 0.91 × 0.91 × 1 mm(3) crystals coupled to two position-sensitive avalanche photodiodes (PSAPDs) mounted on a flex circuit. Appropriate crystal segmentation allows the recording of all three spatial coordinates of the interaction(s) simultaneously with submillimeter resolution. We report an average energy resolution of 14.6 ± 1.7% for 511 keV photons at FWHM. Coincident time resolution was determined to be 2.98 ± 0.13 ns FWHM on average. The coincidence point spread function (PSF) has an average FWHM of 0.837 ± 0.049 mm (using a 500 μm spherical source) and is uniform across the arrays. Both PSF and coincident time resolution degrade when Compton interactions are included in the data. Different blurring factors were evaluated theoretically, resulting in a calculated PSF of 0.793 mm, in good agreement with the measured value.
Collapse
Affiliation(s)
- A Vandenbroucke
- Molecular Imaging Program at Stanford, Department of Radiology, Stanford, CA, USA.
| | | | | | | |
Collapse
|
9
|
Tafreshi NK, Kumar V, Morse DL, Gatenby RA. Molecular and Functional Imaging of Breast Cancer. Cancer Control 2010; 17:143-55. [DOI: 10.1177/107327481001700302] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Background Significant efforts have been directed toward developing and enhancing imaging methods for the early detection, diagnosis, and characterization of small breast tumors. Molecular and functional imaging sets the stage for enhancement of current methodology. Methods Current imaging modalities are described based on the molecular characteristics of normal and malignant tissue. New molecular imaging methods that have the potential for clinical use are also discussed. Results: Dynamic contrast-enhanced magnetic resonance imaging is more sensitive than mammography in BRCA1 carriers. It is used in screening and in the early evaluation of neoadjuvant therapy. Positron emission mammography is 91% sensitive and 93% specific in detecting primary breast cancers. Sentinel node scintigraphy is a key component of axillary lymph node evaluation. Other imaging modalities being studied include Tc99m sestamibi, radiolabeled thymidine or uridine, estrogen receptor imaging, magnetic resonance spectroscopy, and diffusion magnetic resonance imaging. Conclusions Molecular and functional imaging of the breast will likely alter clinical practice in diagnosing and staging primary breast cancer and assessing response to therapy since it will provide earlier information regarding the underlying biology of individual breast cancers, tumor stage, potential treatment strategies, and biomarkers for early evaluation of treatment effects.
Collapse
Affiliation(s)
| | - Virendra Kumar
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, Florida
| | - David L. Morse
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, Florida
| | | |
Collapse
|
10
|
Ranger NT, Lo JY, Samei E. A technique optimization protocol and the potential for dose reduction in digital mammography. Med Phys 2010; 37:962-9. [PMID: 20384232 DOI: 10.1118/1.3276732] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Digital mammography requires revisiting techniques that have been optimized for prior screen/film mammography systems. The objective of the study was to determine optimized radiographic technique for a digital mammography system and demonstrate the potential for dose reduction in comparison to the clinically established techniques based on screen- film. An objective figure of merit (FOM) was employed to evaluate a direct-conversion amorphous selenium (a-Se) FFDM system (Siemens Mammomat Novation(DR), Siemens AG Medical Solutions, Erlangen, Germany) and was derived from the quotient of the squared signal-difference-to-noise ratio to mean glandular dose, for various combinations of technique factors and breast phantom configurations including kilovoltage settings (23-35 kVp), target/filter combinations (Mo-Mo and W-Rh), breast-equivalent plastic in various thicknesses (2-8 cm) and densities (100% adipose, 50% adipose/50% glandular, and 100% glandular), and simulated mass and calcification lesions. When using a W-Rh spectrum, the optimized FOM results for the simulated mass and calcification lesions showed highly consistent trends with kVp for each combination of breast density and thickness. The optimized kVp ranged from 26 kVp for 2 cm 100% adipose breasts to 30 kVp for 8 cm 100% glandular breasts. The use of the optimized W-Rh technique compared to standard Mo-Mo techniques provided dose savings ranging from 9% for 2 cm thick, 100% adipose breasts, to 63% for 6 cm thick, 100% glandular breasts, and for breasts with a 50% adipose/50% glandular composition, from 12% for 2 cm thick breasts up to 57% for 8 cm thick breasts.
Collapse
Affiliation(s)
- Nicole T Ranger
- Department of Radiology, Carl E. Ravin Advanced Imaging Laboratories, Duke University, Durham, North Carolina 27710, USA.
| | | | | |
Collapse
|
11
|
Bartholomä MD, Louie AS, Valliant JF, Zubieta J. Technetium and Gallium Derived Radiopharmaceuticals: Comparing and Contrasting the Chemistry of Two Important Radiometals for the Molecular Imaging Era. Chem Rev 2010; 110:2903-20. [DOI: 10.1021/cr1000755] [Citation(s) in RCA: 250] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Mark D. Bartholomä
- Department of Chemistry, Syracuse University, Syracuse, New York 13244, and Department of Chemistry, McMaster University, Hamilton, Canada ON L8S 4M1
| | - Anika S. Louie
- Department of Chemistry, Syracuse University, Syracuse, New York 13244, and Department of Chemistry, McMaster University, Hamilton, Canada ON L8S 4M1
| | - John F. Valliant
- Department of Chemistry, Syracuse University, Syracuse, New York 13244, and Department of Chemistry, McMaster University, Hamilton, Canada ON L8S 4M1
| | - Jon Zubieta
- Department of Chemistry, Syracuse University, Syracuse, New York 13244, and Department of Chemistry, McMaster University, Hamilton, Canada ON L8S 4M1
| |
Collapse
|
12
|
Rajagopal V, Nielsen PMF, Nash MP. Modeling breast biomechanics for multi‐modal image analysis—successes and challenges. WILEY INTERDISCIPLINARY REVIEWS-SYSTEMS BIOLOGY AND MEDICINE 2010; 2:293-304. [PMID: 20836030 DOI: 10.1002/wsbm.58] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Vijay Rajagopal
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
| | - Poul M. F. Nielsen
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
| | - Martyn P. Nash
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
| |
Collapse
|
13
|
Abstract
In this article, the published literature on the role of screening mammography in the detection of ductal carcinoma in situ (DCIS) is reviewed. This includes what is known about the detection of DCIS in different demographic groups. Finally the author describes her views on how the field might be advanced.
Collapse
MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Biomarkers, Tumor/analysis
- Breast Neoplasms/chemistry
- Breast Neoplasms/classification
- Breast Neoplasms/diagnosis
- Breast Neoplasms/diagnostic imaging
- Breast Neoplasms/epidemiology
- Carcinoma, Ductal, Breast/chemistry
- Carcinoma, Ductal, Breast/diagnosis
- Carcinoma, Ductal, Breast/epidemiology
- Carcinoma, Intraductal, Noninfiltrating/chemistry
- Carcinoma, Intraductal, Noninfiltrating/classification
- Carcinoma, Intraductal, Noninfiltrating/diagnosis
- Carcinoma, Intraductal, Noninfiltrating/diagnostic imaging
- Carcinoma, Intraductal, Noninfiltrating/epidemiology
- Diagnostic Imaging/methods
- Diagnostic Imaging/statistics & numerical data
- Disease Progression
- Female
- Forecasting
- Humans
- Incidence
- Mammography/methods
- Mammography/statistics & numerical data
- Mass Screening
- Middle Aged
- Multicenter Studies as Topic/statistics & numerical data
- Racial Groups/statistics & numerical data
- Risk Factors
- Time Factors
- United Kingdom/epidemiology
- United States/epidemiology
Collapse
Affiliation(s)
- Etta D Pisano
- Department of Radiology, Medical University of South Carolina College of Medicine, 96 Jonathan Lucas Street, Suite 601, MSC 617. Charleston, SC 29425, USA.
| |
Collapse
|
14
|
Thulkar S, Hari S. Present Role of Mammography/Digital Mammography in Breast Cancer Management. PET Clin 2009; 4:213-25. [DOI: 10.1016/j.cpet.2009.09.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
15
|
Jinshan Tang, Rangayyan R, Jun Xu, El Naqa I, Yongyi Yang. Computer-Aided Detection and Diagnosis of Breast Cancer With Mammography: Recent Advances. ACTA ACUST UNITED AC 2009; 13:236-51. [DOI: 10.1109/titb.2008.2009441] [Citation(s) in RCA: 375] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
16
|
Thomas MA, Lipnick S, Velan SS, Liu X, Banakar S, Binesh N, Ramadan S, Ambrosio A, Raylman RR, Sayre J, DeBruhl N, Bassett L. Investigation of breast cancer using two-dimensional MRS. NMR IN BIOMEDICINE 2009; 22:77-91. [PMID: 19086016 DOI: 10.1002/nbm.1310] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Proton (1H) MRS enables non-invasive biochemical assay with the potential to characterize malignant, benign and healthy breast tissues. In vitro studies using perchloric acid extracts and ex vivo magic angle spinning spectroscopy of intact biopsy tissues have been used to identify detectable metabolic alterations in breast cancer. The challenges of 1H MRS in vivo include low sensitivity and significant overlap of resonances due to limited chemical shift dispersion and significant inhomogeneous broadening at most clinical magnetic field strengths. Improvement in spectral resolution can be achieved in vivo and in vitro by recording the MR spectra spread over more than one dimension, thus facilitating unambiguous assignment of metabolite and lipid resonances in breast cancer. This article reviews the recent progress with two-dimensional MRS of breast cancer in vitro, ex vivo and in vivo. The discussion includes unambiguous detection of saturated and unsaturated fatty acids, as well as choline-containing groups such as free choline, phosphocholine, glycerophosphocholine and ethanolamines using two-dimensional MRS. In addition, characterization of invasive ductal carcinomas and healthy fatty/glandular breast tissues non-invasively using the classification and regression tree (CART) analysis of two-dimensional MRS data is reviewed.
Collapse
Affiliation(s)
- M Albert Thomas
- Department of Radiological Sciences, David Geffen School of Medicine, University of California, Los Angeles, CA 90095-1721, USA.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Is a short-interval postradiation mammogram necessary after conservative surgery and radiation in breast cancer? Int J Radiat Oncol Biol Phys 2008; 72:1041-7. [PMID: 18407428 DOI: 10.1016/j.ijrobp.2008.02.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2007] [Revised: 02/09/2008] [Accepted: 02/12/2008] [Indexed: 11/22/2022]
Abstract
PURPOSE To examine, in a retrospective study, whether the initial posttreatment mammogram offers any benefit to patients. METHODS AND MATERIALS Patients were selected who had radiation after breast-conservation therapy from 1995 through 2005 and had follow-up mammography at the University of California-Los Angeles (UCLA) within 1 year of completing radiotherapy. Results of the initial follow-up mammogram were analyzed to determine the yield of this initial mammogram. RESULTS Between 1995 and 2005, 408 patients treated with breast-conserving therapy and radiation had follow-up mammograms at UCLA within 1 year of completion of radiation. Median age at radiation completion was 56.9 years. Median interval between radiation and the initial mammogram was 3.1 months. Ten patients were found to have suspicious findings on the initial postradiation mammogram, prompting biopsy, but only 2 were found to have recurrent cancer. None of those lesions were palpable. In both cases the recurrences were ductal carcinoma in situ. Thus, the yield of the initial postoperative mammogram as compared with physical examination findings is estimated at 0.49 recurrences detected per 100 mammograms performed (95% confidence interval 0.059-1.759). CONCLUSIONS The yield of the initial postradiation mammography at UCLA seems to be low, and only noninvasive carcinomas were found. Our data support the rationale to avoid the initial short-interval postradiation mammography and evaluate patients at 12 months.
Collapse
|