## Core Concept
Paget's disease of the breast is a rare form of breast cancer that primarily affects the skin of the nipple and, sometimes, the areola. It is often associated with an underlying breast cancer, typically ductal carcinoma in situ (DCIS) or invasive breast cancer. The disease presents with eczema-like changes to the skin of the nipple and areola.

## Why the Correct Answer is Right
The correct answer involves understanding the characteristics and associations of Paget's disease of the breast. Paget's disease is known for its association with underlying breast malignancies, its typical presentation with nipple-areolar eczema-like changes, and specific histological features including the presence of Paget cells. These cells are large, pale-staining cells with distinctive nuclei that can be found in the epidermis of the nipple and areola.

## Why Each Wrong Option is Incorrect
- **Option A:** Without specific details on option A, it's challenging to directly address its incorrectness. However, any statement contradicting the known associations, presentations, or histological features of Paget's disease would be incorrect.
- **Option B:** Similarly, without specifics, one would assess its accuracy based on known facts about Paget's disease, such as its rarity, typical age group affected (post-menopausal women), and clinical presentation.
- **Option D:** This option's incorrectness would depend on its claim regarding Paget's disease, such as its pathology, treatment, or outcomes.

## Clinical Pearl / High-Yield Fact
A key point to remember is that Paget's disease of the breast often presents with a persistent, eczema-like lesion on the nipple or areola. A biopsy is essential for diagnosis, as clinical presentation alone can be misleading. The presence of Paget cells in the epidermis is diagnostic. Importantly, Paget's disease is associated with an underlying breast cancer in about 90% of cases, making it crucial to investigate for concurrent breast malignancy.

**Correct Answer: D.**