ABSTRACT
 
 This research was carried out to characterize the variety of the breast lesion seen during mammography at UNTH and to establish the age 
 
 distribution of the lesion at the time of presentation.
 This research is non descriptive study,222 secondary data was obtained from the patient request card and patient mammography result.
 This result shows that benign tumour is more common in our locality and it sub classified into fibroadenoma, cyst, lipoma mastitis, and 
 
 it is presented at age of 41-45.this shows that benign tumour is more common in early age than malignant tumour which is presented at the 
 
 late age.
 The above findings  shows that variety of breast lesion is seen in our locality and all hand should be on deck to ensure that its 
 
 incidence death rate is reduced.
 
 TABLE OF CONTENT
 
 Title Page…………………………………………………………….i
 Certification…………………………………............................ii
 Dedication…………………………………………………………..iii
 Acknowledgement…………………………………………………iv
 Abstract……………………………………………………………..v
 Table of content……………………………………………………vi
 CHAPTER ONE
 Introduction…………………………………………………………1
 1.1 Statement of problem…………………………………………3
 1.2 Purpose of the study………………………………………….3
 1.3 Significant of the study………………………………………3
 1.4 Scope of the study…………………………………………….3
 1.5 Literature Review……………………………………………….4
 CHAPTER TWO
 2.0 The anatomy of the breast……………………………………9
 2.1 Size and shape of the breast………………………………….9
 2.2 Location of the breast…………………………………………..9
 2.3 Commonest site for breast lesions…………………………..10
 2.4 Clinical presentations of breast lesions………………………10
 2.5 Benign breast lesions can be characterized ……………….12
 2.6 Malignant lesions can be characterized………………….16
 2.7 Breast cancer seen in mammogram has the stages………18
 2.8 Implications of breast screening program on mammogram.19
 2.9 How it works…………………………………………………………20
 2.10 Criticisms of mammography……………………………………21
 2.11 How ultrasound evaluate abnormal changes in mammography……………………………………………………………21
 2.12 How magnetic resonance imaging evaluate abnormal changes in Mammography………………………………………..22
 2.13 Indications for using MRI for screening…...................23
 2.14 How computed tomography evaluate abnormal changes on mammogram……………………………………………………………23
 2.15 The use of biopsy to evaluate abnormal change on mammography…………………………………………………………24
 2.16 There are two procedures during biopsy…………………24
 2.17 Breast biopsy with an ABBI (advanced Breast biopsy instrumentation)………………………………………………………25
 CHAPTER THREE
 3.0 Research design……………………………………………………27
 3.1 Source of data………………………………………………………27
 3.2 Sample size…………………………………………………………27
 3.3 Method of data collection…………………………………………27
 3.4 Data analysis………………………………………………………27
 CHAPTER FOUR
 4.0 Data presentation and analysis ………………………………28  
 CHAPTER FIVE
 5.0 Discussion……………………………………………………………34
 5.1 Conclusion……………………………………………………………36
 5.2 Recommendation……………………………………………………36
 5.3 Limitation…………………………………………………………….37
 5.4 References……………………………………………………………38
 
 INTRODUCTION
 
 Cancer can be defined as an abnormal and uncontrolled growth of cell in any part of the body.  Breast cancer is a cancer that affects the breast. The vast majority of breast cancer occurs in women, although man can develop breast cancer too but it is prognosis is 
 rare. A breast tumuor is considered as benign if it is limited to a few cell layers and does not invade surrounding tissue or organs. When the tumour spread to the surrounding tissue or organs, it is considered as malignant1.
 Cancer of the breast is the commonest female malignancies in Nigeria 1,2,3,4.  It is the leading cause of cancer related death5 and account for almost one in every five of all cancer related death among women6.  There are widely used effective screening techniques 
 
 that enhance early detection of breast cancer. These screening techniques include mammography, MRI, thermography and radionuclide 
 
 imaging4. 
 Mammography though with its limitations has remained the best and most reliable procedure for early breast cancer detection, this 
 
 is due to its availability and cost. Mammography is the soft tissue examination of the breast.  The invention of these techniques has 
 
 actually simulated application of other procedures to breast lesion detection. These screening techniques detect the early stage of 
 
 breast cancer, that pre-invasive stage, the symptom free stage, the carcinoma-in situ and the curable stage of breast cancer. Breast 
 
 lesions are dreadful only when the detection and treatment is late3.                                                                     
 Radiographer and radiologist are expected to be familiar with the mammographic appearance of a variety of unusual breast lesions7.  These 
 
 lesions include systemic diseased e.g. collagen vascular disease, vasculitis, hyperparathyroidism, stectocystoma multiplex, rare benign 
 
 tumor (e.g. fibromatosis, extra-abdominal desmoids tumour, granular cell tumour) hamartoma (Fibrroadenolipoma), phyllode tumour 
 
 (cystosarcoma phyilodes), uncommon primary malignant tumors (e.g. lymphoma, sarcoma and carcinosarcoma, adenoid cystic carcinoma), and 
 
 metastatic lesions.
 The most common breast problems for which women and few men consult a physician are breast pain, nipple discharge and palpable mass8.  
 
 Breast lesions seen in mammography include lumps, benign tumor, and malignant (metastasis) tumor.  
      Breast carcinoma is very dreadful disease, therefore there is need that it should be detected at an earlier stage when it prognosis 
 
 are still high.       
      There has not been any work in our locality on characterization of breast lesion seen on mammo hence, this research intends to 
 
 characterize and comprehensively document the breast lesions that are seen in our locality and the age of presentation.  This will help 
 
 in selecting the most appropriate treatment option for the lesions.