## Core Concept
Borderline ovarian tumors, also known as tumors of low malignant potential, are a category of ovarian neoplasms that exhibit a behavior intermediate between benign and malignant tumors. They are characterized by their potential to recur and, rarely, to metastasize, but generally have a favorable prognosis. The diagnosis and management of these tumors involve understanding their unique pathological and clinical features.

## Why the Correct Answer is Right
The correct answer, . , is associated with the feature that is not typical of borderline ovarian tumors. Borderline ovarian tumors are known for their indolent behavior, potential for local spread but not typically for distant metastasis at presentation, and generally good prognosis. They often present at an early stage and are usually treated with surgery, which can be conservative in younger women.

## Why Each Wrong Option is Incorrect
- **Option A:** is a feature of borderline tumors. They often have a favorable prognosis, especially when diagnosed and treated early.
- **Option B:** can be associated with borderline tumors. These tumors can exhibit local invasion but not to the extent of being considered frankly malignant.
- **Option C:** might be seen in borderline tumors. They can have complex histological patterns but are distinct from frankly malignant ovarian cancers in their behavior and prognosis.

## Clinical Pearl / High-Yield Fact
A key clinical pearl for borderline ovarian tumors is that they can often be treated conservatively, especially in young women wishing to preserve fertility. However, careful follow-up is required due to the risk of recurrence. Another important point is that the presence of **pseudomyxoma peritonei** is more commonly associated with appendiceal neoplasms rather than borderline ovarian tumors.

## Correct Answer: .