NSAIDs

This is a prospective four-armed unblinded randomized controlled trial to assess four different potential post-operative treatment options for men who undergo a vasectomy. The aims of this study are: * To determine whether the addition of nonsteroidal anti-inflammatory drugs (NSAIDs) to acetaminophen results in improved pain after vasectomy; * To determine whether the addition of opioid pain medication to acetaminophen and/or NSAIDs results in improved pain after vasectomy; * To determine whether the use of NSAIDs for post-operative pain management increases risk of hematoma after vasectomy.

This study was designed to compare analgesic efficacy and safety of different perioperative analgesic modes in minimally invasive esophagectomy for esophageal cancer.