A female underwent aboion after finding out evidence of molar pregnancy. Which of the following is a BAD prognostic factor for choriocarcinoma?
**Core Concept**
A molar pregnancy is a gestational trophoblastic disease (GTD) characterized by the abnormal growth of trophoblast cells, which could potentially lead to choriocarcinoma, a malignant form of GTD. Choriocarcinoma is a highly aggressive and metastatic cancer that requires prompt diagnosis and treatment.
**Why the Correct Answer is Right**
The correct answer is associated with an increased risk of choriocarcinoma, which is a malignant transformation of the trophoblastic cells. The presence of metastasis to the brain is a known poor prognostic factor for choriocarcinoma, as it indicates a more advanced stage of the disease and a higher likelihood of resistance to chemotherapy.
**Why Each Wrong Option is Incorrect**
**Option A:** Age less than 20 years is actually a good prognostic factor for choriocarcinoma, as patients in this age group tend to have a better response to chemotherapy.
**Option B:** A history of previous molar pregnancy is a relative contraindication for future pregnancy, but it is not a direct prognostic factor for choriocarcinoma.
**Option C:** The presence of high levels of beta-hCG is a marker for choriocarcinoma, but it is not a prognostic factor in itself; rather, it is used to monitor the response to treatment.
**Clinical Pearl / High-Yield Fact**
Choriocarcinoma is a highly aggressive cancer that requires prompt diagnosis and treatment. A delay in diagnosis can lead to metastasis and a poor prognosis.
**Correct Answer: D. Brain metastasis.**