Brenner Tumor of the Ovary: CT and MR Findings

Abstract

Extensive amorphous calcification in a solid mass or solid component in a multilocular cystic mass is a characteristic finding of Brenner tumor of the ovary on CT and MRI.

Brenner Tumors of the Ovary

“…Athey and Siegel 3 identified 3 of 4 tumors prospectively on sonography; 8 (47%) of 17 tumors in our series were not seen on sonography retrospectively. 3 Moon et al 4 reported that 5 (63%) of 8 patients had either a predominantly solid or at least a partly solid appearance on CT, lower than our result of 78%. Calcifications have been reported in 50% of Brenner tumors on sonography 3 and 83% on CT 4 ; both of these modalities showed 56% prevalence of calcifications in our series.…”

“…3 Moon et al 4 reported that 5 (63%) of 8 patients had either a predominantly solid or at least a partly solid appearance on CT, lower than our result of 78%. Calcifications have been reported in 50% of Brenner tumors on sonography 3 and 83% on CT 4 ; both of these modalities showed 56% prevalence of calcifications in our series. Magnetic resonance imaging may also show Brenner tumors, given their not infrequent incidental appearance on pelvic imaging studies.…”

Diffusion-weighted Imaging of a Malignant Brenner Tumor

“…4 Several authors have reported that imaging features of benign Brenner tumors include very low signal intensity of the solid component on T 2 -weighted images, which re‰ects denseˆbrous collagen tissues, and CTˆndings of extensive amorphous calciˆcation within the tumors. [5][6][7] There have been onlyˆve reports of MR imagingˆndings of borderline or malignant Brenner tumors. [6][7][8][9] All four reports demonstrated that the tumor exhibited a cystic tumor with papillary or polypoid solid component.…”

“…[5][6][7] There have been onlyˆve reports of MR imagingˆndings of borderline or malignant Brenner tumors. [6][7][8][9] All four reports demonstrated that the tumor exhibited a cystic tumor with papillary or polypoid solid component. Although Moon's group 6 described the signal of the solid component on T 2 -weighted images as hypointense, the other four authors reported it as medium to high.…”

“…[1][2][3][4] Although computed tomography (CT) and magnetic resonance (MR) imaging features of benign Brenner tumors have been described, [5][6][7] reports ofˆnd-ings of borderline and malignant Brenner tumors are limited. [6][7][8][9] Moreover,ˆndings of diŠusion-weighted imaging (DWI) of malignant Brenner tumor are not reported. We report a case of malignant ovarian Brenner tumor with components that transition from benign to malignant, and we correlateˆndings from CT and MR imaging, including DWI, with pathologicalˆndings.…”