A woman comes to you with vomiting and vaginal bleed. Fuher investigation reveals that she has a trophoblastic disease which has also burrowed into the myometrium. Histopathology showed evidence of chorionic villi. What is your diagnosis?

**Core Concept**
The underlying principle being tested is the understanding of **trophoblastic diseases**, which are a group of rare, abnormal pregnancies that can develop into cancer. These diseases arise from the **trophoblast cells**, which are the outer layer of cells that form the placenta.

**Why the Correct Answer is Right**
Given that the trophoblastic disease has burrowed into the **myometrium** and histopathology showed evidence of **chorionic villi**, this indicates an invasive form of trophoblastic disease that has penetrated the uterus wall. This description aligns with an **invasive mole**, a type of gestational trophoblastic disease (GTD) that invades the myometrium.

**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because it doesn't specify the invasive nature of the disease into the myometrium.
**Option B:** Incorrect as it refers to a non-invasive form of trophoblastic disease without myometrial invasion.
**Option C:** Incorrect because it is not a type of trophoblastic disease characterized by invasion into the myometrium with chorionic villi present.

**Clinical Pearl / High-Yield Fact**
A key point to remember is that **invasive mole** is a type of gestational trophoblastic neoplasia (GTN) that requires prompt treatment due to its potential for local invasion and distant metastasis.

**Correct Answer:** D. Invasive Mole.

✓ Correct Answer: C. Invasive mole