An Unusual Ovarian Mucinous Borderline Tumor with a Large Solid Component.

Area of Science:

• Gynecologic pathology
• Diagnostic imaging
• Oncology

Background:

• Ovarian epithelial tumors exhibit diverse imaging characteristics, often mimicking malignant neoplasms.
• Distinguishing benign or borderline tumors from invasive carcinoma is critical for appropriate patient management.
• Magnetic resonance imaging (MRI) plays a key role in characterizing adnexal masses.

Observation:

• A case of a mucinous borderline tumor of the ovary presenting as a predominantly solid mass in the lower pelvic cavity was observed.
• The tumor displayed complex cystic and solid components on imaging.
• Specific MRI signal intensities, including high T1-weighted and low T2-weighted signals, were noted, attributed to mucinous or hemorrhage content.

Findings:

• The MRI findings of this rare, solid-predominant mucinous borderline ovarian tumor are detailed.
• The imaging characteristics, including signal intensities on T1 and T2 weighted sequences, are consistent with mucinous and/or hemorrhagic components.
• The solid appearance can be mistaken for ovarian carcinoma.

Implications:

• Accurate MRI interpretation is vital for differentiating mucinous borderline tumors from ovarian cancer.
• Recognition of this rare presentation can guide surgical planning and potentially avoid overtreatment.
• This case highlights the importance of considering borderline tumors in the differential diagnosis of solid-appearing ovarian masses.