Bolat, HaciErdogan, Aliriza2024-11-072024-11-0720222602-30322602-3040https://doi.org/10.17826/cumj.1016601https://search.trdizin.gov.tr/tr/yayin/detay/519912https://hdl.handle.net/11480/13997Purpose: The aim of this study is to evaluate the association of blood 25-hydroxy vitamin D levels with fibrocystic breast masses and breast patterns. Materials and Methods: The study included 612 patients who presented with breast complaints or referred for routine screening between 2018-2021 and were requested to have breast ultrasonography (USG) and mammography (MG) examinations. Patients were divided into two groups; group 1 consisted of women with fibrocystic mass (BI-RADS 2-3) and group 2 consisted of women without breast mass (BI-RADS 1). These two groups were compared by age, breast USG, MG results, and blood 25-hydroxy vitamin D levels. Results: Of the 612 patients, 310 (51%) had fibrocystic mass in their breasts, while 302 (49%) had normal breasts. The mean age of both groups was similar. Those with fibrocystic mass in the breast had lower vitamin D levels and higher breast density than the control group. The group with higher breast density had lower vitamin D levels, and there was a negative correlation between vitamin D level and breast density Conclusion: Our study revealed that women with fibrocystic masses in their breasts (BI- RADS2 and BI-RADS3) had higher breast density and lower vitamin D levels than women without breast mass.eninfo:eu-repo/semantics/openAccessFibrocystic breast massesbreast densityvitamin DArticle47116116810.17826/cumj.1016601519912WOS:000767959700021N/A