Wednesday 25 May 2011

The Utility of Breast MRI as a Problem-Solving Tool

The Utility of Breast MRI as a Problem-Solving Tool
Edwin J. Yau, Robert L. Gutierrez, Wendy B. DeMartini, Peter R. Eby, Sue Peacock and Constance D. Lehman
The Breast Journal 17;3:273–280

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Breast magnetic resonance imaging (MRI) is routinely used as a problem-solving tool, but its benefit for this indication remains unclear. The records of 3001 consecutive breast MR examinations between January 1, 2003 and June 6, 2007 were reviewed to identify all those performed for the clinical indication of problem solving. Details of clinical presentation, mammography and ultrasound (US) findings, follow-up recommendations, and pathology outcomes were recorded. Benign versus malignant outcomes were determined by biopsy or 12 months of follow-up imaging and linkage with the regional tumor registry. Problem solving was the clinical indication for 204 of 3001 (7%) of all examinations. Forty-two of 204 examinations (21%) had suspicious or highly suspicious MRI assessments with recommendation for biopsy and 62 of 204 (79%) examinations were assessed as negative, benign, or probably benign. Thirty-six biopsies were performed based on MRI findings and 14 cancers were diagnosed. Biopsy was indicated for 11 of 14 (79%) cancers based on suspicious mammographic or US findings identified prior to MRI. One incidental cancer was detected by MRI alone in a patient at high risk for breast cancer, and two cancers were detected in patients with suspicious nipple discharge and negative mammogram and US. A single false-negative MRI occurred in a patient whose evaluation for a palpable lump prompted biopsy. 

Problem-solving breast MRI rarely identifies otherwise occult cancer and can be falsely negative in patients with suspicious findings on mammogram and US. Until the benefits and risks of problem-solving MRI are clarified, it should be used judiciously.

Increase in Mastectomies Performed in Patients in the Community Setting Undergoing MRI

Increase in Mastectomies Performed in Patients in the Community Setting Undergoing MRI
Ayodele Ayoola, Suganthi Alagarsamy, Jerry Jaboin and Suman Rao
The Breast Journal 17;3:256-259

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This study is designed to determine whether the use of magnetic resonance imaging (MRI) leads to an increased number of unnecessary mastectomies in breast cancer patients in the community setting. This is a retrospective study of the records of 178 patients from the local offices of three community physicians. The medical records of patients over the age of 18 with breast cancer who underwent both MRI and mammogram imaging were reviewed. MRI detected more lesions than mammogram; however, these lesions were not cancerous. The lesions detected by mammogram correlated more with pathologic lesions. Of the 59 patients who underwent mastectomies, 78% had MRI and 22% did not have the imaging. Of the 100 patients who had both MRI and mammogram, 48% underwent lumpectomy and 46% had mastectomy. More patients who had both imaging modalities underwent mastectomies compared to those who had mammogram alone. The addition of MRI evaluation in patients with breast cancer is related to increased unnecessary mastectomies.

Overview of Gynecomastia in the Modern Era and the Leeds Gynaecomastia Investigation Algorithm

Overview of Gynecomastia in the Modern Era and the Leeds Gynaecomastia Investigation Algorithm
Samir Rahmani, Philip Turton, Abeer Shaaban and Barbara Dall
The Breast Journal 17;3:246-255
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Gynecomastia is a benign enlargement of male breast glandular tissue. At least a third of males are affected at some time during their lifetime. Idiopathic causes exceed other etiologies and relate to an imbalance in the ratio of estrogen to androgen tissue levels or end-organ responsiveness to these hormones. Assessment must include a thorough history and clinical examination, specific blood investigations and usually tissue sampling and/or breast imaging. Management consists of a combination of measures that may include simple reassurance, pharmacological manipulation, medical treatment or surgery. Hormone therapy may help to abort the acute proliferative phase of gynecomastia with a 30% response rate but should not be considered in chronic established cases. Surgical treatment may comprise simple liposuction for a predominant fatty component or direct excision when glandular tissue is predominant. The main aim is to control the patient’s symptoms and to exclude other etiological factors.

Predictors of Invasion and Axillary Lymph Node Metastasis in Patients with a Core Biopsy Diagnosis of Ductal Carcinoma In Situ: An Analysis of 255 Cases

Predictors of Invasion and Axillary Lymph Node Metastasis in Patients with a Core Biopsy Diagnosis of Ductal Carcinoma In Situ: An Analysis of 255 Cases
Jeong S. Han, Kyle H. Molberg and Venetia Sarode
The Breast Journal 17;3:223–229

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The diagnosis of ductal carcinoma in situ (DCIS) using core biopsy does not ensure the absence of invasion on final excision. We performed a retrospective analysis of 255 patients with DCIS who had subsequent excision. Clinical, radiologic, and pathologic findings were correlated with risk of invasion and sentinel lymph node (SLN) metastasis. Of 255 patients with DCIS, 199 had definitive surgery and 52 (26%) had invasive ductal carcinoma (IDC) on final excision. Extent of abnormal microcalcification on mammography, and presence of a radiologic/palpable mass and solid type of DCIS were significantly associated with invasion on final excision. Sentinel lymph node biopsy was performed in 131 (65.8%) patients of whom 18 (13.4%) had metastasis. Size of IDC and extent of DCIS on final pathology were significantly associated with positive SLN. Micrometastasis and isolated tumor cells comprised majority (71.4%) of the metastases in DCIS. SLN biopsy should be considered in those with high risk DCIS

Sunday 12 September 2010

Imaging of Dermatofibrosarcoma Protuberans of Breast

Imaging of Dermatofibrosarcoma Protuberans of Breast
Shi-Zuo Liu, Tzu-Lung Ho, Soa-Min Hsu, Hui-Lun Zhan and Chen-Pin Chou
The Breast Journal 2010 16;5:541–543

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Dermatofibrosarcoma protuberans (DFSP) is a rare superficial soft tissue malignancy. We report a 45-year-old woman diagnosed with DFSP involving the breast. Ultrasound of DFSP revealed a heteroechogenetic breast mass, which showed normal adjacent dermis. Mammography disclosed a high-density mass without microcalcification. MRI showed an enhancing lobulated lesion with small area of cystic change and hemorrhage. The patient underwent excision biopsy and pathology revealed DFSP of the breast. DFSP involving the breast is rare and preoperative diagnosis by imaging could be a challenge for clinicians. 


A solitary mixed echogenicity and ill-defined soft tissue with no microcalcification located in the subdermal region could indicate the presence of DFSP

Lobular Neoplasia of the Breast

Lobular Neoplasia of the Breast
Ramachandran Venkitaraman
The Breast Journal 2010 16;5:519–528

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Lobular neoplasia is increasingly being detected, probably due to the widespread screening for breast malignancies. The understanding of lobular neoplasia is undergoing a paradigm shift, from being considered a predictor of recurrence to being considered a pre-invasive lesion, based on molecular studies suggesting a clonal link with invasive lobular cancer. 

The management of patients diagnosed to have lobular neoplasia is in evolution, with the increasing need for risk stratification and hence the necessity to identify this entity separately as either lobular carcinoma in-situ and atypical lobular hyperplasia. The indications for wide local excision for patients diagnosed to have lobular neoplasia on biopsy are being defined. 

The evidence for preventive strategies like hormonal treatment with Tamoxifen or aromatase inhibitors for high risk patients is increasing, with the results from prospective interventional trials. The role of screening magnetic resonance imaging for surveillance of high risk patients with lobular neoplasia is under evaluation

Imaging Characteristics of Male Breast Disease

Imaging Characteristics of Male Breast Disease
Zehra Hilal Adibelli, Ozgur Oztekin, Işil Gunhan-Bilgen, Hakan Postaci, Adam Uslu and Enver Ilhan
The Breast Journal 2010 16;5:510–518

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The purpose of the study was to describe the imaging findings of male breast disease. One hundred and sixty-four male patients, who underwent mammography and ultrasonography (US) between January 1999 and December 2008, were retrospectively evaluated. Seventy-five patients (46%) underwent biopsy, and 89 patients (54%) were diagnosed radiologically. The radiologic and pathologic diagnoses in 164 cases of this series were 13 cancers (8%), including one ipsilateral and one contralateral breast cancers, 147 cases of gynecomastia (90%), one fibroadenoma (0.6%), two cases of fibrocystic disease of the breast (1.2%), and one epidermoid inclusion cyst (0.6%).

Three mammographic patterns were adequate to describe all 147 cases of gynecomastia in our series: 53 patients (36%) had nodular gynecomastia, 46 patients (31%) had dendritic gynecomastia, and 48 patients (33%) had diffuse gynecomastia. Gynecomastia was unilateral in 65% of cases (n = 95), and bilateral in 35% of cases (n = 52). On physical examination, two of the malignant lesions had no clinic features of malignancy (15%). On mammography, 11 of 13 malignant masses were demonstrated (85%). A mass with microcalcifications was seen on mammograms in one case (9%). The contours of the masses were irregular in nine cases (82%), well-circumscribed in two cases (18%). The location of the masses was retroareolar in seven cases (64%) and eccentric to the nipple in four cases (36%). The size of the masses varied between 0.5 cm and 5 cm (mean 2.4 cm). Nipple retraction was evident in five cases (45%), and skin thickening in four cases (36%). All of the malignant masses were demonstrated on ultrasound; however, one of them was seen retrospectively after mammography. All of the masses were hypoechoic and solid, the contours were well-defined and smooth in two masses (15%), and irregular in 11 masses (85%), and five masses (39%) had posterior prominent shadowing. Axillary lymphadenopathia was detected in two cases (15%). One patient had a previous contralateral breast cancer, and one had an ipsilateral.

On mammography, breast cancer characteristically exhibits an irregular subareolar mass, nipple retraction, and skin ulceration or thickening, but sometimes breast cancer has a well-circumscribed contour and punctuated microcalcifications. Ultrasonography is essential and useful for further characterization and helpful for demonstrating lymphadenopathies of the axillary region