Unusual presentation of benign cystic brenner tumor with exuberant psammomatous calcifications.

Transitional cell tumors of the ovary comprise about 1% to 2% of all ovarian neoplasms. Most of these tumors are benign Brenner tumors and account for about 5% of benign surface epithelial-stromal tumors. Spicules of calcifications are found in the stroma of about 50% of benign Brenner tumors. Although diagnostic challenges might occur more frequently with either of the borderline or malignant Brenner tumors, this problem is not that common when diagnosing a benign Brenner tumor. This study reports a case of benign Brenner tumor with exuberant dystrophic calcifications that obscured most of the epithelium and posed a diagnostic challenge in differentiating it from the more common malignant counterparts such as serous carcinoma and specifically psammocarcinoma.