Broadband optical mammography: chromophore concentration and hemoglobin saturation contrast in breast cancer.

This study reports the optical characterization and quantitative oximetry of human breast cancer using spectrally-resolved images collected with a broadband, continuous-wave optical mammography instrument. On twenty-six cancer patients, we collected two-dimensional optical mammograms and created maps of the concentrations of hemoglobin, water, and lipids, as well as the oxygen saturation of hemoglobin. For each cancerous breast, we analyzed the difference between the tumor region (as identified by x-ray and optical mammography) and the remainder of breast tissue. With respect to the surrounding tissue, we found that cancer regions have significantly higher concentrations of total hemoglobin (+2.4 ± 0.4 µM) and water (+7 ± 1% v/v), and significantly lower lipid concentration (8 ± 2% v/v) and oxygen saturation of hemoglobin (5 ± 1%). We also found a significant correlation between the tumor optical contrast and the grade of breast cancer as quantified by the Nottingham histologic score; this demonstrates how optical signatures may be representative of metabolic and morphological features, as well as the aggressive potential of the tumor.

Development of wire localization for occult breast lesions: Boston remembrances.

In the 1970s, the four authors of this article each set up mammographic screening programs and independently developed preoperative needle-wire localization techniques at different Boston-area hospitals. These innovations, which facilitated surgical biopsy of nonpalpable abnormalities, helped establish and popularize mammography and have only minimally changed over the ensuing decades. This historical perspective shares personal anecdotes of the early development of mammography and mammographic wire localizations.

A modified triple test for palpable breast masses: the value of ultrasound and core needle biopsy.

BACKGROUND: The original triple test score (TTS)--clinical examination, mammogram, and fine-needle aspiration (FNA) biopsy--has long been used to evaluate palpable breast masses. We modified the original TTS to include ultrasound (US) and core biopsy to determine their role in evaluating palpable breast masses. METHODS: A retrospective chart review of 320 female patients was performed. We developed a modified triple test score (mTTS) that included physical examination, mammogram and/or US, and FNA and/or core biopsy. For the examination and imaging score, 1-3 points were given for low, moderate, or high suspicion. Biopsy scores were characterized as benign, atypical, or malignant. Final outcome was determined by open biopsy or follow-up greater than 1 year. RESULTS: Physical examination was 92% accurate (95% confidence interval [CI] 0.89-0.96, p < 0.0001) at predicting whether a mass was benign or malignant. Imaging was 88% accurate (95% CI 0.84-0.92, p < 0.0001) and needle biopsy was 95% accurate (95% CI 0.92-0.98, p < 0.0001). The modified triple test was 99% accurate (95% CI 0.98-1.00, p < 0.0001). Each 1-point increment in the mTTS was associated with an increased risk of cancer, with an odds ratio of 9.73 (CI 5.16-18.4, p < 0.0001). For 150 patients, we compared the original TTS with the mTTS. US and core biopsy changed the scores of 24 patients; only three changed clinical management. CONCLUSIONS: For patients with a palpable breast mass and a mTTS score of 3-4, no further assessment is necessary. Those with a mTTS of 8-9 can proceed to definitive therapy. Patients with a mTTS of 5-7 require further assessment. US and/or core biopsy added little to the accuracy or predictive value of the original TTS.

Breast imaging, standard of care, and the expert.

Many radiologists have the opportunity to serve as experts in determining whether a colleague's actions are within standard of care. This is an important responsibility because, in large part, the fairness and success of the judicial system determining whether medical negligence has occurred is dependent on the opinion of the medical expert. Especially in the field of breast imaging, the physician acting as an expert often has to base opinions on judgments rather than incontestable facts. To make judgments of the highest quality, the expert must possess a clear understanding of the concept of standard of care. This article focuses on the role of experts in malpractice cases dealing with mammography and the delay of diagnosis of breast cancer.

The pancake phenomenon contributes to the inaccuracy of margin assessment in patients with breast cancer.

BACKGROUND: To determine the effect on margin evaluation for patients with breast cancer, we prospectively quantified the "flattening" of the breast specimen after surgical removal. METHODS: The volume and height of 100 consecutive breast biopsy specimens were recorded independently by the operating surgeon and the pathologist. Five factors were analyzed that were thought to contribute to changes in specimen dimensions: patient age, breast tissue density, mammographic lesion type, specimen size, and the use of compression during specimen radiography. RESULTS: After surgical removal, mean volume and height of the breast specimens decreased from 46 cm(3) to 29 cm(3) (30%) and from 2.6 cm to 1.4 cm (46%), respectively. Flattening of the breast specimens occurred in all subgroups studied. CONCLUSIONS: Breast specimens are flattened after surgical removal, losing almost 50% of their original height. This "pancake" phenomenon has important implications for the accuracy of margin analysis.