## **Core Concept**
The question pertains to the management and complications following the surgical excision of a **pheochromocytoma**, a type of tumor that arises from the adrenal glands and is known for secreting excessive amounts of **catecholamines** (e.g., epinephrine and norepinephrine). The surgical removal of such a tumor can lead to significant shifts in blood pressure and potentially life-threatening complications.

## **Why the Correct Answer is Right**
The correct answer, , is related to the understanding that after the removal of a pheochromocytoma, patients are at risk for **hypotension** due to the sudden decrease in circulating catecholamines. The body may have become accustomed to the high levels of these hormones, and the **vasopressor** effect they have on blood vessels. Once the tumor is removed, the blood vessels may dilate, leading to hypotension. This condition can be exacerbated by **relative adrenal insufficiency** because the contralateral adrenal gland may be suppressed due to chronically elevated cortisol levels from the tumor or because of the stress response. However, among the provided options, is the least likely complication early postoperatively.

## **Why Each Wrong Option is Incorrect**
- **Option A:** is a known complication due to the reasons mentioned above.
- **Option B:** could be considered but less directly related; however, might still be seen due to fluctuations in blood pressure.
- **Option C:** This option would actually be a complication more aligned with the preoperative or intraoperative period rather than immediately postoperative.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that **intraoperative** and **postoperative** blood pressure management in pheochromocytoma surgery is critical. Patients are at risk for both **hypertensive crises** (due to tumor manipulation) and **hypotension** postoperatively. The use of **alpha** and **beta-blockade** preoperatively is essential to manage blood pressure and prevent cardiovascular complications.

## **Correct Answer:** .