med's go on Instagram: "Upper endoscopy (esophagogastroduodenoscopy or EGD) is the diagnostic test of choice for Mallory–Weiss syndrome because it allows direct visualization of the mucosal lacerations at the gastroesophageal junction. These longitudinal mucosal tears are typically found in the lower esophagus or proximal stomach, and EGD can also be therapeutic if there is active bleeding—via interventions such as epinephrine injection, thermal coagulation, or hemoclipping. Imaging studies like