**Core Concept**
The spread of endometrial cancer (Ca endometrium) primarily involves the pelvic lymph nodes, but it can also metastasize to other lymph node groups. Understanding the lymphatic drainage of the uterus is crucial for identifying the lymph nodes involved in endometrial cancer.

**Why the Correct Answer is Right**
The correct answer involves a specific group of lymph nodes not typically involved in the spread of endometrial cancer. This is because the lymphatic drainage of the uterus primarily involves the pelvic lymph nodes, including the external iliac, internal iliac, and obturator lymph nodes. The lymph nodes in the para-aortic region are involved in the spread of cervical cancer, but not typically in endometrial cancer.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not provided, so we'll skip it.
**Option B:** This option is also not provided, so we'll skip it.
**Option C:** This option is also not provided, so we'll skip it.
**Option D:** This option is also not provided, so we'll skip it.

**Clinical Pearl / High-Yield Fact**
The most common sites of lymph node metastasis in endometrial cancer are the external iliac, internal iliac, and obturator lymph nodes. The para-aortic lymph nodes are not typically involved in the spread of endometrial cancer, but can be involved in cervical cancer.

**Correct Answer:**
Please provide the correct options for the question.