A fibroadenoma was diagnosed in the mammary gland of a lamb by immunohistochemical method andmeasurement of oestradiol hormone. The tumor was characterized by an encapsulated firm mass with acreamy-white cut surface. Histologically, it consisted of variably-sized sinus ducts, covered by a single ormultiple layers of proliferated epithelial cells, and embedded in a loose connective tissue. Immun...

background: breast cancer is the most common malignancy in females worldwide. several etiological factors including environmental factors have been recognized for breast cancer. epstein barr virus as a viral etiological factor has been proposed. so far, several studies have investigated the relationship between development of breast cancer and epstein barr virus, but few have been done in iran....

A case of concordant oligodendroglioma in monozygotic twins is reported. The twins were also concordant for uterine leiomyoma and one twin partner had fibroadenoma and lipoma of the breast and myelofibrosis. As very few cases of concordant glioma in monozygotic twins have been published and no such cases in dizygotic twins, a genetic influence in the aetiology of glioma can only be suggested.