Breast diseases have been one of the major battles the world has been fighting. In winning this fight, the role of medical imaging cannot be overlooked. Breast imaging reveals hidden lesions which aid physicians to give the appropriate diagnosis and definitive treatment, hence this study, to determine the clinical and imaging findings of breast examinations to document the radiologic features in our setting. This cross-sectional retrospective study reviewed the sociodemographics, imaging reports (mammography and ultrasonography with BI-RADS scores and their features), and the clinical data of 425 patients from September 2017 to September 2020 in the Cape Coast Teaching Hospital. 72 solid lesions with their histology reports were also reviewed. Data obtained were organized, coded, and analyzed using Statistical Package for Social Sciences (SPSS Inc., Chicago, IL, USA) version 20.0. The results obtained were presented in appropriate tables and charts. A chi-squared test was employed for associations and statistical significance was specified at . 63.29% of the patients were married, but only 18.59% had a positive family history of breast cancer. BI-RADS scores 1(57.46%) and 2(27.99%) were the most recurrent findings. The most common BI-RADS 2, 3, 4, and 5 imaging features were benign-looking axillary lymph nodes (66.33%), well-defined solid masses (61.54%), ill-defined solid masses (42.86%), and ill-defined solid masses with suspicious-looking axillary lymph nodes (100.00%), respectively. The most frequent indications were routine screening (49.18%), mastalgia (26.59%), and painless breast masses (19.77%). There was significant association between duration of symptoms and breast cancer (). In conclusion, routine breast screening and mastalgia were the topmost indications for breast imaging. BI-RADS 1 and 2 were the commonest BI-RADS scores, and benign-looking axillary lymph nodes and simple cysts were the most frequent imaging features for BI-RADS 2 and ill-defined solid masses and suspicious-looking axillary lymph nodes for BI-RADS 4 and 5.
1. Introduction
Breast-related diseases have become a topic of focus these days; one of such diseases is breast cancer. According to the World Health Organization (WHO), breast cancer is a leading cancer among women affecting about 2.1 million each year, causing the greatest number of cancer-related mortalities among women [1]. Breast hypertrophy, radial scars, breast cysts, fibroadenomas, intraductal papillomas, sclerosing adenosis, Phyllodes tumors and many more, are other breast-related diseases [2]. The early stages of some of these breast conditions cause some pains whilst others do not. There is therefore the need for a frequent breast examination so as to aid early detection of such conditions, especially the ones that are not painful at the early stages [3].
There are forms of breast examinations; the popular one is the breast self-examination (BSE). The BSE is a known technique that an individual uses to examine his/her breast tissues for any change whether palpable or visual. It is often used as an early detection method for breast cancers/tumors [4]. The BSE technique was developed over 67 years ago from an idea proposed by a chapter of the American Cancer Society to a standard of recommendation of many health care professionals [5]. For economic and other reasons, BSE has been very important and easily accessible technique for people who could not access the clinical breast examination (CBE) which is usually done by the clinicians [6, 7].
Breast imaging is a subspecialty of diagnostic radiology. It generally refers to ultrasonography, mammography, and magnetic resonance imaging (MRI) of the breast. [8, 9]. Other modalities that may be used include positron emission tomography (PET), scintimammography, electrical impedance-based imaging, thermography, optical imaging, and computed tomography (CT) [10]. Breast imaging has so much importance; it mainly helps to define an injury to living tissue and to screen the remainder of the breast for secondary lesions. In general, breast imaging is done before a biopsy because the artifact from the biopsy can interfere with the interpretation of the study [11]. It also helps to identify and characterize breast masses and calcifications. Differentiation of cystic masses from solid masses are done through ultrasonography which is the most available imaging modality in Ghana [12, 13].
The American College of Radiology has advanced a system named BI-RADS which stands for Breast Imaging Reporting and Data System. The BI-RADS was developed for reporting mammogram results using a common language, for standardization and for patients’ follow-ups. The radiologist assigns a single-digit BI-RADS score (ranging from 0 to 5) when the report of a person’s mammogram is created [13]. The details of the BI-RADS scores are shown in (Table 1).
BI-RADS score
Category
Detail
BI-RADS 0
Incomplete
Mammogram study is not yet complete.
BI-RADS 1
Negative
Mammogram was negative (no cancer).
BI-RADS 2
Benign
Mammogram was normal (no cancer) but other findings (such as cysts) are described in the report.
BI-RADS 3
Probably benign
Mammogram is probably normal/benign. Chances of breast cancer approximately 2%.
BI-RADS 4
Suspicious
Mammogram is probably malignant. Chances of breast cancer approximately 23%-34%.
BI-RADS 5
High malignancy
Highly suspicious for malignancy with 95% chance of breast cancer.
Footnote: American College of Radiology. Breast Imaging Reporting and Data System (BIRADS) [14].