**Core Concept**
Boerhaave's syndrome is a severe form of esophageal rupture, characterized by a full-thickness tear in the esophagus, typically occurring due to a sudden increase in intra-abdominal pressure. This condition is often associated with forceful vomiting, heavy lifting, or straining during defecation.

**Why the Correct Answer is Right**
The correct answer involves understanding the pathophysiology of Boerhaave's syndrome. The esophagus is a muscular tube that propels food into the stomach by peristalsis. A full-thickness tear in the esophagus can occur when the esophageal wall is subjected to excessive stress, leading to mucosal and submucosal disruption. This can result in leakage of gastric contents into the mediastinum, causing severe mediastinitis and potentially life-threatening complications.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is likely incorrect because Boerhaave's syndrome is not typically associated with spontaneous rupture of the esophagus due to mucosal weakness or congenital anomalies.
* **Option B:** This option is incorrect because Boerhaave's syndrome is not primarily caused by a benign esophageal diverticulum, which is a pouch-like protrusion of the esophageal mucosa.
* **Option C:** This option is incorrect because Boerhaave's syndrome is not typically associated with a Zenker's diverticulum, which is a type of esophageal diverticulum located in the upper posterior esophagus.

**Clinical Pearl / High-Yield Fact**
Boerhaave's syndrome is a medical emergency that requires prompt recognition and treatment to prevent severe complications. A high index of suspicion should be maintained in patients presenting with severe chest pain, vomiting, and signs of mediastinitis.

**Correct Answer: D.**