No history of tobacco or alcohol abuse, otherwise healthy, p/w atypical chest pain, subacute worsening of chronic pain. No overt risk factors for ACS and EKG and troponinwithout overt e/o NSTEMI. Low Wells score with low risk for PE and no significant hypoxia. Unlikely PNA or PTX. Given chronicity, low s/f dissection. No RUQ pain c/f cholecystitis, murphy’s negative. Unlikely pancreatitis.