Background: Breast cancer incidence is rising, it is the commonest type of malignancy among women worldwide and in Iraq. Core needle biopsy and excisional technique provides adequate tissue for histopathological diagnosis of suspected breast lumps. Breast ultrasonography has gained widespread acceptance as a diagnostic tool for the evaluation of breast disorders. The aim of study is to find the correlation between ultrasound study and the histological type of malignant breast cancer.

Method: A cross-sectional research was done on 98 female breast clinic patients at Al-Elwyia Maternity Teaching Hospital between January and December 2023. Each participant's age (in years), family history of breast cancer, and ultrasound characteristics like lesion shape (irregular or regular), margin (speculated or well-defined), calcification (negative or positive), and lymph node metastasis were recorded. Histopathological diagnosis included cancer grade (1, 2, or 3), breast side (bilateral, left, or right), and malignancy type.

Results: The study at Al-Elwyia Maternity Teaching Hospital on 98 female breast cancer patients found a higher prevalence of breast cancer in the 40-59 age range, with 68.9% having no family history. Ultrasound characteristics showed 77% had irregularly shaped lesions, and histopathology revealed 90.1% with Invasive Ductal Carcinoma (IDC), with no significant correlation between ultrasound features and cancer type.

Conclusion: Breast cancers is more common in women aged 40-59 without a family history, with most lesions having irregular shape and speculated margin in ultrasound, and IDC on histology. These ultrasound findings were common, but they did not correlate with histological kinds of cancer, highlighting the difficulty of breast cancer detection and the need for comprehensive diagnostic tools.