 Hello everyone, I am Dr. Priyanka, a final year PG resident at Atul Bihari Vajpayee Institute of Medical Sciences and Dr. Ramanohar Roya Hospital. Today, I will be presenting a poster on characterisation of breast lesions on ultrasound. The aim of the study is to detect and classify lesions into benign and malignant based on the sonographic morphology and to correlate the findings with mammograms using virates. Breast cancer is the most prevalent cancer among women worldwide causing increased mortality. Lack of awareness leads to detection of breast cancer in the advanced stages, making them difficult to cure. Reinforcing the importance of breast screening, ultrasound and mammography for breast screening are efficient and relatively easy to perform. Ultrasound, along with mammography, lays an important role in distinguishing benign lesions from malignant lesions. The study was conducted in the Department of Radio Diagnosis at Atul Bihari Vajpayee Institute of Medical Sciences and Dr. Ramanohar Roya Hospital, New Delhi, from 1st March 2022 to 30th November 2022. 40 cases were included, who presented with pain and lump in breast from all age groups. The imaging characteristic of benign lesions were well-subscribed, hyper-equate tissue, wider than taller, smooth-marginated, smooth lobulations less than three-number, thin-echogenic pseudo-capsules, absent or non-significant axillary lymph nodes. The malignant characteristic of lesions were sonographic speculations deeper than wider, micro-lobulations, angular or obscure margins, markedly hypo-equate, nodule, sonographic posterior or caustic shadowing, branching pattern, punctate calcification, duct extension and heterogeneous ecotexture. The result of the study were in the symptomatic patients on imaging, 25% cases were normal, 45% cases had benign lesion and 30% cases had malignant lesions. Maximum cases were detected in the age group of 40 to 50 years, benign cases outnumbered the malignant lesion, the most common symptom was lump in breast followed by pain and most of the patient presented after six months of symptom. Now the benign lesions, case number one. Here we see a well-defined, well-marginated, oval-shaped, wider than taller, hypo-equate lesion, which is a lipoma. In this, on ultrasound, a well-circumstribed, oval-shaped, homogeneously hypo-equate mass, wider than taller, with posterior caustic enhancement and edge shadowing is sheen. On mammogram, a well-circumstribed, oval-shaped, high-density mass lesion is noted. It is a fibro adenoma with pirates 2. Case number three. A well-defined, sharply-marginated and equic cystic lesion with posterior caustic enhancement is sheen, which is a cyst, pirates 2. Case number four. An ill-defined, irregular, shaped, solid cystic, hetero-equate lesion is seen in the retro-irular region with significant viscularity on limited color Doppler and overlying skin thickening. On mammogram, this lesion was seen as irregular-shaped, high-density mass lesion, with speculated margin, with overlying skin retraction. It was given as pirate five. Case number five. Here we see a well-defined, predominantly circumscribed, wider than taller, solid, hetero-equate mass lesion with partly obscured margin with edge shadowing and posterior caustic enhancement. Significant viscularity on limited color Doppler. On mammogram, it was seen as an over-shaped, high-density mass with partially indistinct margin in the later one-third of the parent primer. It was assigned pirates 4A. Case number six. We see a well-defined, oval-shaped, solid, hypo-equate lesion with lobulated margin. Posterior caustic enhancement was seen. Significant arterial viscularity noted. On mammogram, it was seen as predominantly circumscribed. Oval-shaped, high-density mass lesion with micro-lobulated margins. Fungtate-calcific focus was noted within the lesion. It was given by its foreseeing. Case number seven. Here we see an irregular-shaped, solid, hypo-equate lesion with obscured margin and significant arterial viscularity on limited color Doppler. On mammogram, it was seen as a predominantly circumscribed, irregular-shaped, high-density mass lesion with partially obscured margins seen in the later one-third parent primer of the outer lower quadrant. Few irregular-shaped cores, heterogeneous calcifications were noted, thickening of skin and subcutaneous tissue at nipple aerular complex scene, nipple retraction scene, few auxiliary lymph nodes were noted. This was assigned pirates five. Discussion. So the primary role of breast imaging is to detect and characterize abnormality that could represent melignin. Benign breast changes can be definitively distinguished from melignin relations through the selective use of interdisciplinary collaboration. Benign proliferative breast diseases are the breast conditions, wherein there is more plantular or fibrotic tissue than they expected for patient age and parity. These conditions include fibrocystic disease, adenosis, fibroedinoma, cysts, ductal hyperplasia, and papilloma. All breast cancers are believed to arise from the terminal duct lobular unit. It is the distal most part of the ductal branching system, which opens into the lobule of the gland and is the site of most active cellular proliferation. Invasive or infiltrating duct carcinoma is the most common histological subtype. The mammographic interpretation has a category of definitely benign lesions by red stew, but there is no definitive melignin lesion. Mammographic detects lesions which are either suspicious or highly suspicious of melignin, hence all such lesions need to be subjected to biopsies. Conclusion. Benign breast changes can be definitively distinguished from the melignin lesions through the selective use of ultrasound. Breast ultrasound is widely used to confirm a diagnosis of cancer to look for additional disease in the breast for image-guided biopsy and localization and assessment of the axilla. These are my references. Thank you.