**Core Concept**
The comedo type of ductal carcinoma in situ (DCIS) is a specific pattern of breast cancer characterized by large, central necrotic cells surrounded by viable tumor cells. This pattern is named after its resemblance to comedones, or blackheads.

**Why the Correct Answer is Right**
Comedo DCIS is typically associated with high-grade, aggressive tumor behavior. The central necrosis is thought to result from a rapid rate of cell proliferation and a lack of adequate blood supply. The comedo pattern is often seen in conjunction with other high-risk features, such as high-grade histology and extensive necrosis. This pattern is more commonly seen in younger women and is often associated with a higher risk of local recurrence and the development of invasive cancer.

**Why Each Wrong Option is Incorrect**
**Option A:** Invasive lobular carcinoma is a different type of breast cancer that typically has a more subtle presentation and a different histological appearance.
**Option B:** Medullary carcinoma is a rare subtype of invasive breast cancer that is characterized by a distinct histological appearance and a relatively favorable prognosis.
**Option C:** Tubular carcinoma is a rare subtype of invasive breast cancer that is characterized by a tubular or cribriform pattern and a relatively favorable prognosis.

**Clinical Pearl / High-Yield Fact**
The comedo pattern of DCIS is often associated with a higher risk of local recurrence and the development of invasive cancer, and patients with this pattern may require more aggressive treatment.

**Correct Answer: C. Medullary carcinoma is a rare subtype of invasive breast cancer that is characterized by a distinct histological appearance and a relatively favorable prognosis.