ABS TRACT Mullerianosis is a very rare condition and involves the coexistence of 2 or more different types of mullerian lesions such as endometriosis, endocervicosis and endosalpingiosis in the extrauterine area. It involves the bladder more frequently in the urinary system and is more common in women of reproductive age. In urinary system involvements, it may present clinically with hematuria, dysuria and pelvic pain. It can mimic malignant lesions of the bladder histopathologically and clinically. Therefore, although they are usually benign lesions, malignancy should be excluded. In this article, we presented a 41-year-old mullerianosis case who presented with gross hematuria and vaginal bleeding.